[fix] the issue of being unable to delete special tables

pkg/sql/plan/build_dml_util.go

@@ -269,8 +269,17 @@ func buildDeletePlans(ctx CompilerContext, builder *QueryBuilder, bindCtx *BindC
 	// both UK and SK. To handle SK case, we will have flags to indicate if it's UK or SK.
 	hasUniqueKey := haveUniqueKey(delCtx.tableDef)
 	hasSecondaryKey := haveSecondaryKey(delCtx.tableDef)
-	if (hasUniqueKey || hasSecondaryKey) && !delCtx.isDeleteWithoutFilters {
-		uniqueDeleteIdx := len(delCtx.tableDef.Cols) + delCtx.updateColLength
+
+	canTruncate := delCtx.isDeleteWithoutFilters
+
+	if len(delCtx.tableDef.RefChildTbls) > 0 ||
+		delCtx.tableDef.ViewSql != nil ||
+		(util.TableIsClusterTable(delCtx.tableDef.GetTableType()) && ctx.GetAccountId() != catalog.System_Account) ||
+		delCtx.objRef.PubInfo != nil {
+		canTruncate = false
+	}
+
+	if (hasUniqueKey || hasSecondaryKey) && !canTruncate {
 		typMap := make(map[string]*plan.Type)
 		posMap := make(map[string]int)
 		for idx, col := range delCtx.tableDef.Cols {
@@ -303,17 +312,26 @@ func buildDeletePlans(ctx CompilerContext, builder *QueryBuilder, bindCtx *BindC
 				if uniqueTableDef == nil {
 					return moerr.NewNoSuchTable(builder.GetContext(), delCtx.objRef.SchemaName, indexdef.IndexTableName)
 				}
-				lastNodeId := appendSinkScanNode(builder, bindCtx, delCtx.sourceStep)
-
-				lastNodeId, err := appendDeleteUniqueTablePlan(builder, bindCtx, uniqueObjRef, uniqueTableDef, indexdef, typMap, posMap, lastNodeId, isUk)
-
+				var lastNodeId int32
+				var err error
+				var uniqueDeleteIdx int
+				var uniqueTblPkPos int
+				var uniqueTblPkTyp *Type
+
+				if delCtx.isDeleteWithoutFilters {
+					lastNodeId, err = appendDeleteUniqueTablePlanWithoutFilters(builder, bindCtx, uniqueObjRef, uniqueTableDef)
+					uniqueDeleteIdx = getRowIdPos(uniqueTableDef)
+					uniqueTblPkPos, uniqueTblPkTyp = getPkPos(uniqueTableDef, false)
+				} else {
+					lastNodeId = appendSinkScanNode(builder, bindCtx, delCtx.sourceStep)
+					lastNodeId, err = appendDeleteUniqueTablePlan(builder, bindCtx, uniqueObjRef, uniqueTableDef, indexdef, typMap, posMap, lastNodeId, isUk)
+					uniqueDeleteIdx = len(delCtx.tableDef.Cols) + delCtx.updateColLength
+					uniqueTblPkPos = uniqueDeleteIdx + 1
+					uniqueTblPkTyp = uniqueTableDef.Cols[0].Typ
+				}
 				if err != nil {
 					return err
 				}
-
-				uniqueTblPkPos := uniqueDeleteIdx + 1
-				uniqueTblPkTyp := uniqueTableDef.Cols[0].Typ
-
 				if isUpdate {
 					// do it like simple update
 					lastNodeId = appendSinkNode(builder, bindCtx, lastNodeId)
@@ -373,7 +391,7 @@ func buildDeletePlans(ctx CompilerContext, builder *QueryBuilder, bindCtx *BindC
 				} else {
 					// it's more simple for delete hidden unique table .so we append nodes after the plan. not recursive call buildDeletePlans
 					delNodeInfo := makeDeleteNodeInfo(builder.compCtx, uniqueObjRef, uniqueTableDef, uniqueDeleteIdx, -1, false, uniqueTblPkPos, uniqueTblPkTyp, delCtx.lockTable, delCtx.partitionInfos)
-					lastNodeId, err = makeOneDeletePlan(builder, bindCtx, lastNodeId, delNodeInfo, isUk, isSK, delCtx.isDeleteWithoutFilters)
+					lastNodeId, err = makeOneDeletePlan(builder, bindCtx, lastNodeId, delNodeInfo, isUk, isSK, false)
 					putDeleteNodeInfo(delNodeInfo)
 					if err != nil {
 						return err
@@ -393,7 +411,7 @@ func buildDeletePlans(ctx CompilerContext, builder *QueryBuilder, bindCtx *BindC
 	}
 	pkPos, pkTyp := getPkPos(delCtx.tableDef, false)
 	delNodeInfo := makeDeleteNodeInfo(ctx, delCtx.objRef, delCtx.tableDef, delCtx.rowIdPos, partExprIdx, true, pkPos, pkTyp, delCtx.lockTable, delCtx.partitionInfos)
-	lastNodeId, err := makeOneDeletePlan(builder, bindCtx, lastNodeId, delNodeInfo, false, false, delCtx.isDeleteWithoutFilters)
+	lastNodeId, err := makeOneDeletePlan(builder, bindCtx, lastNodeId, delNodeInfo, false, false, canTruncate)
 	putDeleteNodeInfo(delNodeInfo)
 	if err != nil {
 		return err