81 lines
2.2 KiB
Plaintext
81 lines
2.2 KiB
Plaintext
*************** Case 1 ***************
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SQL: explain extended select * from t1 order by c1,c2 limit 100;
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=================================
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|ID|OPERATOR|NAME|EST. ROWS|COST|
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---------------------------------
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|0 |VALUES | |0 |0 |
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=================================
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Outputs & filters:
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-------------------------------------
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0 - output(nil), filter(nil)
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*************** Case 1(end) **************
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*************** Case 2 ***************
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SQL: explain extended select c2, sum(c1) from t1 group by c2;
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=================================
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|ID|OPERATOR|NAME|EST. ROWS|COST|
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---------------------------------
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|0 |VALUES | |0 |0 |
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=================================
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Outputs & filters:
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-------------------------------------
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0 - output(nil), filter(nil)
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*************** Case 2(end) **************
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*************** Case 3 ***************
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SQL: explain extended select t1.c1 from t1,t2,t3, t1 tt where t1.c1=t3.c1 and t1.c2=tt.c2 and t1.c1+t2.c1=tt.c1;
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=================================
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|ID|OPERATOR|NAME|EST. ROWS|COST|
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---------------------------------
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|0 |VALUES | |0 |0 |
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=================================
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Outputs & filters:
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-------------------------------------
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0 - output(nil), filter(nil)
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*************** Case 3(end) **************
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*************** Case 4 ***************
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SQL: explain extended select t1.c1 from t1, (select * from t2 where c2>1 order by c1 limit 10) as t where t1.c1=t.c1;
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=================================
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|ID|OPERATOR|NAME|EST. ROWS|COST|
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---------------------------------
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|0 |VALUES | |0 |0 |
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=================================
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Outputs & filters:
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-------------------------------------
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0 - output(nil), filter(nil)
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*************** Case 4(end) **************
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*************** Case 5 ***************
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SQL: explain extended select t1.c1 from t1 left join t2 t on t1.c1=t.c1,t2,t3, t1 tt where t1.c1=t3.c1 and t1.c2=tt.c2 and t1.c1+t2.c1=tt.c1;
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=================================
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|ID|OPERATOR|NAME|EST. ROWS|COST|
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---------------------------------
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|0 |VALUES | |0 |0 |
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=================================
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Outputs & filters:
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-------------------------------------
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0 - output(nil), filter(nil)
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*************** Case 5(end) **************
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