ast: do statement is read only (pingcap#5752)

tiancaiamao · Jan 30, 2018 · 86897e0 · 86897e0
1 parent 7f8879d
commit 86897e0
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Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/ast/read_only_checker.go b/ast/read_only_checker.go
@@ -27,7 +27,7 @@ func IsReadOnly(node Node) bool {
 
 		node.Accept(&checker)
 		return checker.readOnly
-	case *ExplainStmt:
+	case *ExplainStmt, *DoStmt:
 		return true
 	default:
 		return false

diff --git a/ast/read_only_checker_test.go b/ast/read_only_checker_test.go
@@ -38,4 +38,7 @@ func (s *testCacheableSuite) TestCacheable(c *C) {
 
 	stmt = &ExplainStmt{}
 	c.Assert(IsReadOnly(stmt), IsTrue)
+
+	stmt = &DoStmt{}
+	c.Assert(IsReadOnly(stmt), IsTrue)
 }