parser: support 'ALTER TABLE FORCE' syntax (pingcap#6476)

* support 'ALTER TABLE FORCE' syntax
crazycs520 · May 6, 2018 · 9cd410d · 9cd410d
1 parent 7aee5f7
commit 9cd410d
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diff --git a/ast/ddl.go b/ast/ddl.go
@@ -717,6 +717,7 @@ const (
 	AlterTableAlterColumn
 	AlterTableLock
 	AlterTableAlgorithm
+	AlterTableForce
 
 // TODO: Add more actions
 )

diff --git a/parser/parser.y b/parser/parser.y
@@ -1050,6 +1050,14 @@ AlterTableSpec:
 			Tp:    		ast.AlterTableAlgorithm,
 		}
 	}
+| "FORCE"
+	{
+		// Parse it and ignore it. Just for compatibility.
+		$$ = &ast.AlterTableSpec{
+			Tp:    		ast.AlterTableForce,
+		}
+	}
+
 
 AlterAlgorithm:
 	"DEFAULT" | "INPLACE" | "COPY"

diff --git a/parser/parser_test.go b/parser/parser_test.go
@@ -1605,6 +1605,7 @@ func (s *testParserSuite) TestDDL(c *C) {
 		{"ALTER TABLE t CONVERT TO CHARSET utf8;", true},
 		{"ALTER TABLE t CONVERT TO CHARACTER SET utf8 COLLATE utf8_bin;", true},
 		{"ALTER TABLE t CONVERT TO CHARSET utf8 COLLATE utf8_bin;", true},
+		{"ALTER TABLE t FORCE", true},
 		{"ALTER TABLE t DROP INDEX;", false},
 
 		// For create index statement