From 1c14cc65b087c44c209be87bcc75a2e5b743151d Mon Sep 17 00:00:00 2001
From: LiBinfeng <libinfeng@selectdb.com>
Date: Mon, 9 Dec 2024 11:18:50 +0800
Subject: [PATCH] [fix](Planner) fix escape character when used in create view

---
 .../main/java/org/apache/doris/analysis/StringLiteral.java  | 3 +++
 .../doris/external/elasticsearch/QueryBuildersTest.java     | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/fe/fe-core/src/main/java/org/apache/doris/analysis/StringLiteral.java b/fe/fe-core/src/main/java/org/apache/doris/analysis/StringLiteral.java
index 09cb50bb9ed72b..26399ebd3f131f 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/analysis/StringLiteral.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/analysis/StringLiteral.java
@@ -135,6 +135,9 @@ public boolean isMinValue() {
 
     @Override
     public String toSqlImpl() {
+        if (value.equals("\\")) {
+            value = "\\\\";
+        }
         return "'" + value.replaceAll("'", "''") + "'";
     }
 
diff --git a/fe/fe-core/src/test/java/org/apache/doris/external/elasticsearch/QueryBuildersTest.java b/fe/fe-core/src/test/java/org/apache/doris/external/elasticsearch/QueryBuildersTest.java
index 69eab5198aa214..9ea9c3ce87d90a 100644
--- a/fe/fe-core/src/test/java/org/apache/doris/external/elasticsearch/QueryBuildersTest.java
+++ b/fe/fe-core/src/test/java/org/apache/doris/external/elasticsearch/QueryBuildersTest.java
@@ -99,6 +99,12 @@ public void testBinaryPredicateConvertEsDsl() {
                 QueryBuilders.toEsDsl(stringNeExpr, column2typeMap).toJson());
     }
 
+    @Test
+    public void testStringLiteralToSql() {
+        Expr escape = new StringLiteral("\\");
+        Assertions.assertEquals("'\\\\'", escape.toSql());
+    }
+
     @Test
     public void testCompoundPredicateConvertEsDsl() {
         SlotRef k1 = new SlotRef(null, "k1");