2653 lines
106 KiB
JSON
2653 lines
106 KiB
JSON
[
|
|
{
|
|
"Name": "TestTraceCE",
|
|
"Cases": [
|
|
{
|
|
"Expr": "a > 0 and a < 2",
|
|
"Trace": [
|
|
{
|
|
"table_name": "t",
|
|
"type": "Column Stats-Point",
|
|
"expr": "((a = 1))",
|
|
"row_count": 4
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Index Stats-Point",
|
|
"expr": "((a = 1))",
|
|
"row_count": 4
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Column Stats-Range",
|
|
"expr": "((a > 0 and a < 2))",
|
|
"row_count": 4
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Table Stats-Expression-CNF",
|
|
"expr": "`and`(`gt`(test.t.a, 0), `lt`(test.t.a, 2))",
|
|
"row_count": 4
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Expr": "a >= 1 and a < 10",
|
|
"Trace": [
|
|
{
|
|
"table_name": "t",
|
|
"type": "Index Stats-Range",
|
|
"expr": "((a >= 1 and a < 10))",
|
|
"row_count": 6
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Column Stats-Range",
|
|
"expr": "((a >= 1 and a < 10))",
|
|
"row_count": 6
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Table Stats-Expression-CNF",
|
|
"expr": "`and`(`ge`(test.t.a, 1), `lt`(test.t.a, 10))",
|
|
"row_count": 6
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Expr": "a < 3 or b < 4",
|
|
"Trace": [
|
|
{
|
|
"table_name": "t",
|
|
"type": "Column Stats-Range",
|
|
"expr": "((b < 4))",
|
|
"row_count": 6
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Table Stats-Expression-CNF",
|
|
"expr": "`lt`(test.t.b, 4)",
|
|
"row_count": 6
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Table Stats-Expression-DNF",
|
|
"expr": "`or`(`lt`(test.t.a, 3), `lt`(test.t.b, 4))",
|
|
"row_count": 6
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Column Stats-Range",
|
|
"expr": "((a < 3))",
|
|
"row_count": 6
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Index Stats-Range",
|
|
"expr": "((a < 3))",
|
|
"row_count": 6
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Table Stats-Expression-CNF",
|
|
"expr": "`lt`(test.t.a, 3)",
|
|
"row_count": 6
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Table Stats-Expression-CNF",
|
|
"expr": "`or`(`lt`(test.t.a, 3), `lt`(test.t.b, 4))",
|
|
"row_count": 6
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Expr": "a = 1 and b = 2",
|
|
"Trace": [
|
|
{
|
|
"table_name": "t",
|
|
"type": "Index Stats-Point",
|
|
"expr": "((a = 1) and (b = 2))",
|
|
"row_count": 2
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Column Stats-Point",
|
|
"expr": "((a = 1))",
|
|
"row_count": 4
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Column Stats-Point",
|
|
"expr": "((b = 2))",
|
|
"row_count": 3
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Table Stats-Expression-CNF",
|
|
"expr": "`and`(`eq`(test.t.a, 1), `eq`(test.t.b, 2))",
|
|
"row_count": 2
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Expr": "a < 5 or a > 10",
|
|
"Trace": [
|
|
{
|
|
"table_name": "t",
|
|
"type": "Index Stats-Range",
|
|
"expr": "((a < 5)) or ((a > 10 and true))",
|
|
"row_count": 6
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Column Stats-Range",
|
|
"expr": "((a < 5)) or ((a > 10 and true))",
|
|
"row_count": 6
|
|
},
|
|
{
|
|
"table_name": "t",
|
|
"type": "Table Stats-Expression-CNF",
|
|
"expr": "`or`(`lt`(test.t.a, 5), `gt`(test.t.a, 10))",
|
|
"row_count": 6
|
|
}
|
|
]
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "TestTraceDebugSelectivity",
|
|
"Cases": [
|
|
{
|
|
"ResultForV1": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).Selectivity": [
|
|
{
|
|
"Input Expressions": [
|
|
"eq(test.t.a, 100)",
|
|
"eq(test.t.b, 350)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByColumnRanges": [
|
|
{
|
|
"ID": 1,
|
|
"Ranges": [
|
|
"[100,100]"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2001,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 3080,
|
|
"Increase Factor": 1,
|
|
"TopN total count": 1095
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAABk",
|
|
"LowValueEncoded": "A4AAAAAAAABk",
|
|
"Range": "[100,100]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAABk",
|
|
"Value": "KindInt64 100"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": 13
|
|
},
|
|
{
|
|
"Found": true,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 50,
|
|
"Type": "Point"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "a",
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByColumnRanges": [
|
|
{
|
|
"ID": 2,
|
|
"Ranges": [
|
|
"[350,350]"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2001,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 3080,
|
|
"Increase Factor": 1,
|
|
"TopN total count": 1098
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAAFe",
|
|
"LowValueEncoded": "A4AAAAAAAAFe",
|
|
"Range": "[350,350]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAFe",
|
|
"Value": "KindInt64 350"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
3,
|
|
3,
|
|
2,
|
|
1,
|
|
1
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
2,
|
|
3,
|
|
4,
|
|
4
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Point"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "b",
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByIndexRanges": [
|
|
{
|
|
"ID": 1,
|
|
"Ranges": [
|
|
"[100 350,100 350]"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).IsInvalid": {
|
|
"CollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NotAccurate": true,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 3080,
|
|
"Increase Factor": 1,
|
|
"TopN total count": 0
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).getIndexRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": null,
|
|
"LowValueEncoded": null,
|
|
"Range": "[100 350,100 350]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).getEqualCondSelectivity": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).crossValidationSelectivity": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2001,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAABk",
|
|
"LowValueEncoded": "A4AAAAAAAABk",
|
|
"Range": "[100,100]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAABk",
|
|
"Value": "KindInt64 100"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": 13
|
|
},
|
|
{
|
|
"Found": true,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 50,
|
|
"Type": "Point"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2001,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAAFe",
|
|
"LowValueEncoded": "A4AAAAAAAAFe",
|
|
"Range": "[350,350]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAFe",
|
|
"Value": "KindInt64 350"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
3,
|
|
3,
|
|
2,
|
|
1,
|
|
1
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
2,
|
|
3,
|
|
4,
|
|
4
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Point"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Index Name": "iab",
|
|
"crossValidationSelectivity": 0.0000052707033226513745,
|
|
"error": null,
|
|
"minRowCount": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).QueryBytes": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
3,
|
|
3,
|
|
0,
|
|
2,
|
|
2
|
|
],
|
|
"Result": 3,
|
|
"Use default value": true,
|
|
"Values": [
|
|
0,
|
|
1,
|
|
1,
|
|
1,
|
|
1
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Result": 3
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Encoded": "A4AAAAAAAABkA4AAAAAAAAFe",
|
|
"Index Name": "iab",
|
|
"Range": "[100 350,100 350]",
|
|
"Result": 0.0000052707033226513745,
|
|
"UsedColLen": 2,
|
|
"error": null
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 0.016233766233766232,
|
|
"Type": "Range"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "iab",
|
|
"Result": 0.016233766233766232
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByIndexRanges": [
|
|
{
|
|
"ID": 2,
|
|
"Ranges": [
|
|
"[350,350]"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).IsInvalid": {
|
|
"CollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NotAccurate": true,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 3080,
|
|
"Increase Factor": 1,
|
|
"TopN total count": 0
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).getIndexRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": null,
|
|
"LowValueEncoded": null,
|
|
"Range": "[350,350]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).getEqualCondSelectivity": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).crossValidationSelectivity": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2001,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAAFe",
|
|
"LowValueEncoded": "A4AAAAAAAAFe",
|
|
"Range": "[350,350]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAFe",
|
|
"Value": "KindInt64 350"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
3,
|
|
3,
|
|
2,
|
|
1,
|
|
1
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
2,
|
|
3,
|
|
4,
|
|
4
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Point"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Index Name": "ib",
|
|
"crossValidationSelectivity": 0.0003246753246753247,
|
|
"error": null,
|
|
"minRowCount": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).QueryBytes": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
2,
|
|
2,
|
|
1,
|
|
1,
|
|
1
|
|
],
|
|
"Result": 1,
|
|
"Use default value": true,
|
|
"Values": [
|
|
1,
|
|
1,
|
|
1,
|
|
2,
|
|
2
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Encoded": "A4AAAAAAAAFe",
|
|
"Index Name": "ib",
|
|
"Range": "[350,350]",
|
|
"Result": 0.0003246753246753247,
|
|
"UsedColLen": 1,
|
|
"error": null
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Range"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "ib",
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Expressions": [
|
|
"eq(test.t.a, 100)",
|
|
"eq(test.t.b, 350)"
|
|
],
|
|
"Selectivity": 0.0000052707033226513745,
|
|
"partial cover": false
|
|
},
|
|
{
|
|
"Result": 0.0000052707033226513745
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"ResultForV2": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).Selectivity": [
|
|
{
|
|
"Input Expressions": [
|
|
"eq(test.t.a, 100)",
|
|
"eq(test.t.b, 350)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByColumnRanges": [
|
|
{
|
|
"ID": 1,
|
|
"Ranges": [
|
|
"[100,100]"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2000,
|
|
"TotalCount": 2980
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 1980,
|
|
"Increase Factor": 1.0335570469798658,
|
|
"TopN total count": 1000
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAABk",
|
|
"LowValueEncoded": "A4AAAAAAAABk",
|
|
"Range": "[100,100]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAABk",
|
|
"Value": "KindInt64 100"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": 11
|
|
},
|
|
{
|
|
"Found": true,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 51.67785234899329,
|
|
"Type": "Point"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "a",
|
|
"Result": 51.67785234899329
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByColumnRanges": [
|
|
{
|
|
"ID": 2,
|
|
"Ranges": [
|
|
"[350,350]"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2000,
|
|
"TotalCount": 2980
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 1980,
|
|
"Increase Factor": 1.0335570469798658,
|
|
"TopN total count": 1000
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAAFe",
|
|
"LowValueEncoded": "A4AAAAAAAAFe",
|
|
"Range": "[350,350]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAFe",
|
|
"Value": "KindInt64 350"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).equalRowCount": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 105,
|
|
"Exceed": false,
|
|
"InBucket": true,
|
|
"MatchLastValue": false,
|
|
"Value": "KindInt64 350"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": 848,
|
|
"Index": 105,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Count": 0.99,
|
|
"Matched": false
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1.0335570469798658,
|
|
"Type": "Point"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "b",
|
|
"Result": 1.0335570469798658
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByIndexRanges": [
|
|
{
|
|
"ID": 1,
|
|
"Ranges": [
|
|
"[100 350,100 350]"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).IsInvalid": {
|
|
"CollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NotAccurate": true,
|
|
"TotalCount": 2980
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 1980,
|
|
"Increase Factor": 1.0335570469798658,
|
|
"TopN total count": 1000
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).GetRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAABkA4AAAAAAAAFe",
|
|
"LowValueEncoded": "A4AAAAAAAABkA4AAAAAAAAFe",
|
|
"Range": "[100 350,100 350]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).equalRowCount": [
|
|
{
|
|
"Encoded Value": "A4AAAAAAAABkA4AAAAAAAAFe"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).equalRowCount": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 136,
|
|
"Exceed": false,
|
|
"InBucket": true,
|
|
"MatchLastValue": false,
|
|
"Value": "KindBytes \\x03\\x80\\x00\\x00\\x00\\x00\\x00\\x00d\\x03\\x80\\x00\\x00\\x00\\x00\\x00\\x01^"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": 1096,
|
|
"Index": 136,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Count": 0.99,
|
|
"Matched": false
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1.0335570469798658,
|
|
"Type": "Point"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "iab",
|
|
"Result": 1.0335570469798658
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByIndexRanges": [
|
|
{
|
|
"ID": 2,
|
|
"Ranges": [
|
|
"[350,350]"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).IsInvalid": {
|
|
"CollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NotAccurate": true,
|
|
"TotalCount": 2980
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 1980,
|
|
"Increase Factor": 1.0335570469798658,
|
|
"TopN total count": 1000
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).GetRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAAFe",
|
|
"LowValueEncoded": "A4AAAAAAAAFe",
|
|
"Range": "[350,350]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).equalRowCount": [
|
|
{
|
|
"Encoded Value": "A4AAAAAAAAFe"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).equalRowCount": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 105,
|
|
"Exceed": false,
|
|
"InBucket": true,
|
|
"MatchLastValue": false,
|
|
"Value": "KindBytes \\x03\\x80\\x00\\x00\\x00\\x00\\x00\\x01^"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": 848,
|
|
"Index": 105,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Count": 0.99,
|
|
"Matched": false
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1.0335570469798658,
|
|
"Type": "Point"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "ib",
|
|
"Result": 1.0335570469798658
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Expressions": [
|
|
"eq(test.t.a, 100)",
|
|
"eq(test.t.b, 350)"
|
|
],
|
|
"Selectivity": 0.00033557046979865775,
|
|
"partial cover": false
|
|
},
|
|
{
|
|
"Result": 0.00033557046979865775
|
|
}
|
|
]
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"ResultForV1": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).Selectivity": [
|
|
{
|
|
"Input Expressions": [
|
|
"lt(test.t.a, -1500)",
|
|
"gt(test.t.b, 400)",
|
|
"lt(test.t.b, 403)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByColumnRanges": [
|
|
{
|
|
"ID": 1,
|
|
"Ranges": [
|
|
"[-inf,-1500)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2001,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 3080,
|
|
"Increase Factor": 1,
|
|
"TopN total count": 1095
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A3////////ok",
|
|
"LowValueEncoded": "AQ==",
|
|
"Range": "[-inf,-1500)"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 0,
|
|
"Exceed": false,
|
|
"InBucket": false,
|
|
"MatchLastValue": false,
|
|
"Value": "KindMinNotNull <nil>"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": -1,
|
|
"Index": -1,
|
|
"Repeat": -1
|
|
},
|
|
{
|
|
"Count": 50,
|
|
"Index": 0,
|
|
"Repeat": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 0,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 0,
|
|
"Exceed": false,
|
|
"InBucket": false,
|
|
"MatchLastValue": false,
|
|
"Value": "KindInt64 -1500"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": -1,
|
|
"Index": -1,
|
|
"Repeat": -1
|
|
},
|
|
{
|
|
"Count": 50,
|
|
"Index": 0,
|
|
"Repeat": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 0,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).outOfRangeRowCount": [
|
|
{
|
|
"lDatum": "KindMinNotNull <nil>",
|
|
"modifyCount": 0,
|
|
"rDatum": "KindInt64 -1500"
|
|
},
|
|
{
|
|
"commonPrefix": 0,
|
|
"lScalar": -1.7976931348623157e+308,
|
|
"rScalar": -1500,
|
|
"unsigned": false
|
|
},
|
|
{
|
|
"boundL": -7000,
|
|
"boundR": 11000,
|
|
"histL": -1000,
|
|
"histR": 5000,
|
|
"lPercent": 0.8402777777777778,
|
|
"rPercent": 0,
|
|
"rowCount": 1294.0277777777778
|
|
},
|
|
{
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 0,
|
|
"Type": "Range"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "a",
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByColumnRanges": [
|
|
{
|
|
"ID": 2,
|
|
"Ranges": [
|
|
"(400,403)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2001,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 3080,
|
|
"Increase Factor": 1,
|
|
"TopN total count": 1098
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAAGT",
|
|
"LowValueEncoded": "A4AAAAAAAAGQ",
|
|
"Range": "(400,403)"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 401"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
1,
|
|
2,
|
|
2,
|
|
1,
|
|
1
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
2,
|
|
2,
|
|
3,
|
|
3
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Small range in ver1 stats"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 402"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
1,
|
|
3,
|
|
2,
|
|
2,
|
|
2
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
3,
|
|
3,
|
|
3,
|
|
4
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Small range in ver1 stats"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "b",
|
|
"Result": 2
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByIndexRanges": [
|
|
{
|
|
"ID": 1,
|
|
"Ranges": [
|
|
"[-inf,-1500)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).IsInvalid": {
|
|
"CollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NotAccurate": true,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 3080,
|
|
"Increase Factor": 1,
|
|
"TopN total count": 0
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).getIndexRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": null,
|
|
"LowValueEncoded": null,
|
|
"Range": "[-inf,-1500)"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).GetRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A3////////ok",
|
|
"LowValueEncoded": "AQ==",
|
|
"Range": "[-inf,-1500)"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 0,
|
|
"Exceed": false,
|
|
"InBucket": false,
|
|
"MatchLastValue": false,
|
|
"Value": "KindBytes \\x01"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": -1,
|
|
"Index": -1,
|
|
"Repeat": -1
|
|
},
|
|
{
|
|
"Count": 57,
|
|
"Index": 0,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 0,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 0,
|
|
"Exceed": false,
|
|
"InBucket": false,
|
|
"MatchLastValue": false,
|
|
"Value": "KindBytes \\x03\\x7f\\xff\\xff\\xff\\xff\\xff\\xfa$"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": -1,
|
|
"Index": -1,
|
|
"Repeat": -1
|
|
},
|
|
{
|
|
"Count": 57,
|
|
"Index": 0,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 0,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).outOfRangeRowCount": [
|
|
{
|
|
"lDatum": "KindBytes \\x01",
|
|
"modifyCount": 0,
|
|
"rDatum": "KindBytes \\x03\\x7f\\xff\\xff\\xff\\xff\\xff\\xfa$"
|
|
},
|
|
{
|
|
"commonPrefix": 0,
|
|
"lScalar": 72057594037927940,
|
|
"rScalar": 252201579132747780,
|
|
"unsigned": false
|
|
},
|
|
{
|
|
"boundL": 252201579132747740,
|
|
"boundR": 252201579132747840,
|
|
"histL": 252201579132747780,
|
|
"histR": 252201579132747800,
|
|
"lPercent": 1,
|
|
"rPercent": 0,
|
|
"rowCount": 1540
|
|
},
|
|
{
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 0,
|
|
"Type": "Range"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 0,
|
|
"Type": "Range"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "iab",
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByIndexRanges": [
|
|
{
|
|
"ID": 2,
|
|
"Ranges": [
|
|
"(400,403)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).IsInvalid": {
|
|
"CollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NotAccurate": true,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 3080,
|
|
"Increase Factor": 1,
|
|
"TopN total count": 0
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).getIndexRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": null,
|
|
"LowValueEncoded": null,
|
|
"Range": "(400,403)"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).getEqualCondSelectivity": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).crossValidationSelectivity": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2001,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAAGT",
|
|
"LowValueEncoded": "A4AAAAAAAAGQ",
|
|
"Range": "[400,403]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 400"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": 7
|
|
},
|
|
{
|
|
"Found": true,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 50,
|
|
"Type": "Small range in ver1 stats"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 401"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
1,
|
|
2,
|
|
2,
|
|
1,
|
|
1
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
2,
|
|
2,
|
|
3,
|
|
3
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Small range in ver1 stats"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 402"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
1,
|
|
3,
|
|
2,
|
|
2,
|
|
2
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
3,
|
|
3,
|
|
3,
|
|
4
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Small range in ver1 stats"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 403"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
2,
|
|
2,
|
|
1,
|
|
2,
|
|
1
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
2,
|
|
3,
|
|
3,
|
|
3
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Small range in ver1 stats"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Index Name": "ib",
|
|
"crossValidationSelectivity": 0.017207792207792207,
|
|
"error": null,
|
|
"minRowCount": 53
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).QueryBytes": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
1,
|
|
2,
|
|
2,
|
|
1,
|
|
3
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
1,
|
|
1,
|
|
2,
|
|
2,
|
|
3
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Encoded": "A4AAAAAAAAGS",
|
|
"Index Name": "ib",
|
|
"Range": "(400,403)",
|
|
"Result": 0.0003246753246753247,
|
|
"UsedColLen": 1,
|
|
"error": null
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).getEqualCondSelectivity": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).crossValidationSelectivity": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2001,
|
|
"TotalCount": 3080
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAAGT",
|
|
"LowValueEncoded": "A4AAAAAAAAGQ",
|
|
"Range": "[400,403]"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 400"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": 7
|
|
},
|
|
{
|
|
"Found": true,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 50,
|
|
"Type": "Small range in ver1 stats"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 401"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
1,
|
|
2,
|
|
2,
|
|
1,
|
|
1
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
2,
|
|
2,
|
|
3,
|
|
3
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Small range in ver1 stats"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 402"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
1,
|
|
3,
|
|
2,
|
|
2,
|
|
2
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
3,
|
|
3,
|
|
3,
|
|
4
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Small range in ver1 stats"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 403"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": -1
|
|
},
|
|
{
|
|
"Found": false,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
2,
|
|
2,
|
|
1,
|
|
2,
|
|
1
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
2,
|
|
2,
|
|
3,
|
|
3,
|
|
3
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1,
|
|
"Type": "Small range in ver1 stats"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Index Name": "ib",
|
|
"crossValidationSelectivity": 0.017207792207792207,
|
|
"error": null,
|
|
"minRowCount": 53
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).QueryBytes": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*CMSketch).queryHashValue": {
|
|
"Origin Values": [
|
|
2,
|
|
3,
|
|
1,
|
|
3,
|
|
1
|
|
],
|
|
"Result": 1,
|
|
"Use default value": false,
|
|
"Values": [
|
|
1,
|
|
1,
|
|
2,
|
|
3,
|
|
3
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"Result": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Encoded": "A4AAAAAAAAGS",
|
|
"Index Name": "ib",
|
|
"Range": "(400,403)",
|
|
"Result": 0.0003246753246753247,
|
|
"UsedColLen": 1,
|
|
"error": null
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 2,
|
|
"Type": "Range"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "ib",
|
|
"Result": 2
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Expressions": [
|
|
"gt(test.t.b, 400)",
|
|
"lt(test.t.b, 403)"
|
|
],
|
|
"Selectivity": 0.0006493506493506494,
|
|
"partial cover": false
|
|
},
|
|
{
|
|
"Expressions": [
|
|
"lt(test.t.a, -1500)"
|
|
],
|
|
"Selectivity": 0,
|
|
"partial cover": false
|
|
},
|
|
{
|
|
"Result": 0
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"ResultForV2": [
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).Selectivity": [
|
|
{
|
|
"Input Expressions": [
|
|
"lt(test.t.a, -1500)",
|
|
"gt(test.t.b, 400)",
|
|
"lt(test.t.b, 403)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByColumnRanges": [
|
|
{
|
|
"ID": 1,
|
|
"Ranges": [
|
|
"[-inf,-1500)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2000,
|
|
"TotalCount": 2980
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 1980,
|
|
"Increase Factor": 1.0335570469798658,
|
|
"TopN total count": 1000
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A3////////ok",
|
|
"LowValueEncoded": "AQ==",
|
|
"Range": "[-inf,-1500)"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 0,
|
|
"Exceed": false,
|
|
"InBucket": false,
|
|
"MatchLastValue": false,
|
|
"Value": "KindMinNotNull <nil>"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": -1,
|
|
"Index": -1,
|
|
"Repeat": -1
|
|
},
|
|
{
|
|
"Count": 8,
|
|
"Index": 0,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 0,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 0,
|
|
"Exceed": false,
|
|
"InBucket": false,
|
|
"MatchLastValue": false,
|
|
"Value": "KindInt64 -1500"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": -1,
|
|
"Index": -1,
|
|
"Repeat": -1
|
|
},
|
|
{
|
|
"Count": 8,
|
|
"Index": 0,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 0,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).BetweenCount": {
|
|
"Result": 0
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).outOfRangeRowCount": [
|
|
{
|
|
"lDatum": "KindMinNotNull <nil>",
|
|
"modifyCount": 100,
|
|
"rDatum": "KindInt64 -1500"
|
|
},
|
|
{
|
|
"commonPrefix": 0,
|
|
"lScalar": -1.7976931348623157e+308,
|
|
"rScalar": -1500,
|
|
"unsigned": false
|
|
},
|
|
{
|
|
"boundL": -2997,
|
|
"boundR": 2997,
|
|
"histL": -999,
|
|
"histR": 999,
|
|
"lPercent": 0.5613744375005636,
|
|
"rPercent": 0,
|
|
"rowCount": 555.760693125558
|
|
},
|
|
{
|
|
"Result": 100
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 100,
|
|
"Type": "Range"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "a",
|
|
"Result": 100
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByColumnRanges": [
|
|
{
|
|
"ID": 2,
|
|
"Ranges": [
|
|
"(400,403)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).IsInvalid": {
|
|
"EssentialLoaded": true,
|
|
"InValidForCollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NDV": 2000,
|
|
"TotalCount": 2980
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 1980,
|
|
"Increase Factor": 1.0335570469798658,
|
|
"TopN total count": 1000
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).GetColumnRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAAGT",
|
|
"LowValueEncoded": "A4AAAAAAAAGQ",
|
|
"Range": "(400,403)"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 111,
|
|
"Exceed": false,
|
|
"InBucket": true,
|
|
"MatchLastValue": false,
|
|
"Value": "KindInt64 400"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": 888,
|
|
"Index": 110,
|
|
"Repeat": 1
|
|
},
|
|
{
|
|
"Count": 896,
|
|
"Index": 111,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 111,
|
|
"Result": 890.625
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 111,
|
|
"Exceed": false,
|
|
"InBucket": true,
|
|
"MatchLastValue": false,
|
|
"Value": "KindInt64 403"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": 888,
|
|
"Index": 110,
|
|
"Repeat": 1
|
|
},
|
|
{
|
|
"Count": 896,
|
|
"Index": 111,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 111,
|
|
"Result": 893.25
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).BetweenCount": [
|
|
{
|
|
"Related TopN Range": {
|
|
"Count": [
|
|
50
|
|
],
|
|
"FirstEncoded": "A4AAAAAAAAGQ",
|
|
"FirstIdx": 9,
|
|
"LastEncoded": "A4AAAAAAAAGQ",
|
|
"LastIdx": 9
|
|
}
|
|
},
|
|
{
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Column).equalRowCount": [
|
|
{
|
|
"Encoded": "A4AAAAAAAAGQ",
|
|
"Value": "KindInt64 400"
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).QueryTopN": [
|
|
{
|
|
"FindTopN idx": 9
|
|
},
|
|
{
|
|
"Found": true,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Error": null,
|
|
"Result": 50
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 2.713087248322148,
|
|
"Type": "Range"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "b",
|
|
"Result": 2.713087248322148
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByIndexRanges": [
|
|
{
|
|
"ID": 1,
|
|
"Ranges": [
|
|
"[-inf,-1500)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).IsInvalid": {
|
|
"CollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NotAccurate": true,
|
|
"TotalCount": 2980
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 1980,
|
|
"Increase Factor": 1.0335570469798658,
|
|
"TopN total count": 1000
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).GetRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A3////////ok",
|
|
"LowValueEncoded": "AQ==",
|
|
"Range": "[-inf,-1500)"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 0,
|
|
"Exceed": false,
|
|
"InBucket": false,
|
|
"MatchLastValue": false,
|
|
"Value": "KindBytes \\x01"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": -1,
|
|
"Index": -1,
|
|
"Repeat": -1
|
|
},
|
|
{
|
|
"Count": 8,
|
|
"Index": 0,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 0,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 0,
|
|
"Exceed": false,
|
|
"InBucket": false,
|
|
"MatchLastValue": false,
|
|
"Value": "KindBytes \\x03\\x7f\\xff\\xff\\xff\\xff\\xff\\xfa$"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": -1,
|
|
"Index": -1,
|
|
"Repeat": -1
|
|
},
|
|
{
|
|
"Count": 8,
|
|
"Index": 0,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 0,
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).BetweenCount": {
|
|
"Result": 0
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).outOfRangeRowCount": [
|
|
{
|
|
"lDatum": "KindBytes \\x01",
|
|
"modifyCount": 100,
|
|
"rDatum": "KindBytes \\x03\\x7f\\xff\\xff\\xff\\xff\\xff\\xfa$"
|
|
},
|
|
{
|
|
"commonPrefix": 0,
|
|
"lScalar": 72057594037927940,
|
|
"rScalar": 252201579132747780,
|
|
"unsigned": false
|
|
},
|
|
{
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 0,
|
|
"Type": "Range"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "iab",
|
|
"Result": 0
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*HistColl).GetRowCountByIndexRanges": [
|
|
{
|
|
"ID": 2,
|
|
"Ranges": [
|
|
"(400,403)"
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).IsInvalid": {
|
|
"CollPseudo": false,
|
|
"IsInvalid": false,
|
|
"NotAccurate": true,
|
|
"TotalCount": 2980
|
|
}
|
|
},
|
|
{
|
|
"Histogram NotNull Count": 1980,
|
|
"Increase Factor": 1.0335570469798658,
|
|
"TopN total count": 1000
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Index).GetRowCount": [
|
|
{
|
|
"Start estimate range": {
|
|
"CurrentRowCount": 0,
|
|
"HighValueEncoded": "A4AAAAAAAAGT",
|
|
"LowValueEncoded": "A4AAAAAAAAGQ",
|
|
"Range": "(400,403)"
|
|
}
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 111,
|
|
"Exceed": false,
|
|
"InBucket": true,
|
|
"MatchLastValue": false,
|
|
"Value": "KindBytes \\x03\\x80\\x00\\x00\\x00\\x00\\x00\\x01\\x91"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": 888,
|
|
"Index": 110,
|
|
"Repeat": 1
|
|
},
|
|
{
|
|
"Count": 896,
|
|
"Index": 111,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 111,
|
|
"Result": 891.5
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*Histogram).LessRowCountWithBktIdx": [
|
|
{
|
|
"Locate value in buckets": {
|
|
"BucketIdx": 111,
|
|
"Exceed": false,
|
|
"InBucket": true,
|
|
"MatchLastValue": false,
|
|
"Value": "KindBytes \\x03\\x80\\x00\\x00\\x00\\x00\\x00\\x01\\x93"
|
|
}
|
|
},
|
|
{
|
|
"Related Buckets in Histogram": [
|
|
{
|
|
"Count": 888,
|
|
"Index": 110,
|
|
"Repeat": 1
|
|
},
|
|
{
|
|
"Count": 896,
|
|
"Index": 111,
|
|
"Repeat": 1
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Bucket idx": 111,
|
|
"Result": 893.25
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"github.com/pingcap/tidb/statistics.(*TopN).BetweenCount": {
|
|
"Result": 0
|
|
}
|
|
},
|
|
{
|
|
"End estimate range": {
|
|
"RowCount": 1.8087248322147653,
|
|
"Type": "Range"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Name": "ib",
|
|
"Result": 1.8087248322147653
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"Expressions": [
|
|
"gt(test.t.b, 400)",
|
|
"lt(test.t.b, 403)"
|
|
],
|
|
"Selectivity": 0.0005872483221476511,
|
|
"partial cover": false
|
|
},
|
|
{
|
|
"Expressions": [
|
|
"lt(test.t.a, -1500)"
|
|
],
|
|
"Selectivity": 0,
|
|
"partial cover": false
|
|
},
|
|
{
|
|
"Result": 0
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
]
|