planner: ignore the virtual column when collect statistics (#10623) (#…

…10629)
pingcap · May 29, 2019 · a6cb414 · a6cb414
1 parent 74e32e8
commit a6cb414
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/planner/core/planbuilder.go b/planner/core/planbuilder.go
@@ -754,6 +754,10 @@ func (b *PlanBuilder) buildCheckIndexSchema(tn *ast.TableName, indexName string)
 func getColsInfo(tn *ast.TableName) (indicesInfo []*model.IndexInfo, colsInfo []*model.ColumnInfo, pkCol *model.ColumnInfo) {
 	tbl := tn.TableInfo
 	for _, col := range tbl.Columns {
+		// The virtual column will not store any data in TiKV, so it should be ignored when collect statistics
+		if col.IsGenerated() && !col.GeneratedStored {
+			continue
+		}
 		if tbl.PKIsHandle && mysql.HasPriKeyFlag(col.Flag) {
 			pkCol = col
 		} else {