cascade drop table (pingcap#5938)

stevenberge · Mar 3, 2018 · d34f702 · d34f702
1 parent 1a812fc
commit d34f702
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/parser/parser.y b/parser/parser.y
@@ -1960,11 +1960,11 @@ DropIndexStmt:
 	}
 
 DropTableStmt:
-	"DROP" TableOrTables TableNameList
+	"DROP" TableOrTables TableNameList RestrictOrCascadeOpt
 	{
 		$$ = &ast.DropTableStmt{Tables: $3.([]*ast.TableName)}
 	}
-|	"DROP" TableOrTables "IF" "EXISTS" TableNameList
+|	"DROP" TableOrTables "IF" "EXISTS" TableNameList RestrictOrCascadeOpt
 	{
 		$$ = &ast.DropTableStmt{IfExists: true, Tables: $5.([]*ast.TableName)}
 	}
@@ -1991,6 +1991,11 @@ DropStatsStmt:
 		$$ = &ast.DropStatsStmt{Table: $3.(*ast.TableName)}
 	}
 
+RestrictOrCascadeOpt:
+	{}
+|	"RESTRICT"
+|	"CASCADE"
+
 TableOrTables:
 	"TABLE"
 |	"TABLES"

diff --git a/parser/parser_test.go b/parser/parser_test.go
@@ -1399,6 +1399,9 @@ func (s *testParserSuite) TestDDL(c *C) {
 		{"drop tables xxx, yyy", true},
 		{"drop table if exists xxx", true},
 		{"drop table if not exists xxx", false},
+		{"drop table xxx restrict", true},
+		{"drop table xxx, yyy cascade", true},
+		{"drop table if exists xxx restrict", true},
 		{"drop view if exists xxx", true},
 		{"drop stats t", true},
 		// for issue 974