Merge pull request #290 from pingcap/siddontang/blob-text-option-length

parser: blob and text support field length option

parser/parser.y

@@ -3722,9 +3722,10 @@ BlobType:
 		x.Collate = charset.CharsetBin
 		$$ = x
 	}
-|	"BLOB"
+|	"BLOB" OptFieldLen
 	{
 		x := types.NewFieldType(mysql.TypeBlob)
+		x.Flen = $2.(int) 
 		x.Charset = charset.CharsetBin
 		x.Collate = charset.CharsetBin
 		$$ = x
@@ -3751,9 +3752,10 @@ TextType:
 		$$ = x
 
 	}
-|	"TEXT"
+|	"TEXT" OptFieldLen
 	{
 		x := types.NewFieldType(mysql.TypeBlob)
+		x.Flen = $2.(int) 
 		$$ = x
 	}
 |	"MEDIUMTEXT"

parser/parser_test.go

@@ -426,6 +426,9 @@ func (s *testParserSuite) TestParser0(c *C) {
 		// For national
 		{"create table t (c1 national char(2), c2 national varchar(2))", true},
 
+		// For blob and text field length
+		{"create table t (c1 blob(1024), c2 text(1024))", true},
+
 		// For check
 		{"create table t (c1 bool, c2 bool, check (c1 in (0, 1)), check (c2 in (0, 1)))", true},