[parser] statistics: introduce a new kind of syntax to drop global-st…

…ats pingcap#1181
xhebox · Mar 3, 2021 · 1153b3f · 1153b3f
1 parent 6d61501
commit 1153b3f
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Showing 4 changed files with 3,440 additions and 3,418 deletions.
diff --git a/parser/ast/stats.go b/parser/ast/stats.go
@@ -176,6 +176,7 @@ type DropStatsStmt struct {
 
 	Table          *TableName
 	PartitionNames []model.CIStr
+	IsGlobalStats  bool
 }
 
 // Restore implements Node interface.
@@ -185,6 +186,11 @@ func (n *DropStatsStmt) Restore(ctx *format.RestoreCtx) error {
 		return errors.Annotate(err, "An error occurred while add table")
 	}
 
+	if n.IsGlobalStats {
+		ctx.WriteKeyWord(" GLOBAL")
+		return nil
+	}
+
 	if len(n.PartitionNames) != 0 {
 		ctx.WriteKeyWord(" PARTITION ")
 	}