From fcb90dc808f880a225aafe1a58ef5fd7227b31bb Mon Sep 17 00:00:00 2001
From: morrySnow <101034200+morrySnow@users.noreply.github.com>
Date: Fri, 29 Dec 2023 20:47:22 +0800
Subject: [PATCH] [opt](Nereids) use enable_nereids_dml to control ctas and
 create table (#29284)

---
 .../nereids/trees/plans/commands/CreateTableCommand.java  | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/CreateTableCommand.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/CreateTableCommand.java
index 9bdbc949cb..4d1e393716 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/CreateTableCommand.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/CreateTableCommand.java
@@ -73,6 +73,14 @@ public class CreateTableCommand extends Command implements ForwardWithSync {
 
     @Override
     public void run(ConnectContext ctx, StmtExecutor executor) throws Exception {
+        if (!ctx.getSessionVariable().isEnableNereidsDML()) {
+            try {
+                ctx.getSessionVariable().enableFallbackToOriginalPlannerOnce();
+            } catch (Exception e) {
+                throw new AnalysisException("failed to set fallback to original planner to true", e);
+            }
+            throw new AnalysisException("Nereids DML is disabled, will try to fall back to the original planner");
+        }
         if (!ctasQuery.isPresent()) {
             createTableInfo.validate(ctx);
             CreateTableStmt createTableStmt = createTableInfo.translateToLegacyStmt();