[Fix](Nereids) Fix datatype length wrong when string contains chinese (…

…apache#29885)

When varchar literal contains chinese, the length of varchar should not be the length of the varchar, it should be 
the actual length of the using byte.
Chinese is represented by unicode, a chinese char occypy 4 byte at mostly. So if meet chinese in varchar literal, we 
set the length is 4* length.

for example as following:
>        CREATE MATERIALIZED VIEW test_varchar_literal_mv
>             BUILD IMMEDIATE REFRESH AUTO ON MANUAL
>             DISTRIBUTED BY RANDOM BUCKETS 2
>             PROPERTIES ('replication_num' = '1')
>             AS
>             select case when l_orderkey > 1 then "一二三四" else "五六七八" end as field_1 from lineitem;

mysql> desc test_varchar_literal_mv;
the def of materialized view is as following:
+---------+-------------+------+-------+---------+-------+
| Field   | Type        | Null | Key   | Default | Extra |
+---------+-------------+------+-------+---------+-------+
| field_1 | VARCHAR(16) | No   | false | NULL    | NONE  |
+---------+-------------+------+-------+---------+-------+

fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java

@@ -25,6 +25,7 @@
 import org.apache.doris.catalog.AggregateType;
 import org.apache.doris.catalog.Env;
 import org.apache.doris.catalog.KeysType;
+import org.apache.doris.catalog.ScalarType;
 import org.apache.doris.common.Config;
 import org.apache.doris.common.FeConstants;
 import org.apache.doris.common.Pair;
@@ -316,6 +317,7 @@
 import org.apache.doris.nereids.trees.expressions.literal.MapLiteral;
 import org.apache.doris.nereids.trees.expressions.literal.NullLiteral;
 import org.apache.doris.nereids.trees.expressions.literal.SmallIntLiteral;
+import org.apache.doris.nereids.trees.expressions.literal.StringLikeLiteral;
 import org.apache.doris.nereids.trees.expressions.literal.StringLiteral;
 import org.apache.doris.nereids.trees.expressions.literal.StructLiteral;
 import org.apache.doris.nereids.trees.expressions.literal.TinyIntLiteral;
@@ -406,6 +408,7 @@
 import org.apache.doris.nereids.types.coercion.CharacterType;
 import org.apache.doris.nereids.util.ExpressionUtils;
 import org.apache.doris.nereids.util.RelationUtil;
+import org.apache.doris.nereids.util.Utils;
 import org.apache.doris.policy.FilterType;
 import org.apache.doris.policy.PolicyTypeEnum;
 import org.apache.doris.qe.ConnectContext;
@@ -2104,7 +2107,11 @@ public Literal visitStringLiteral(StringLiteralContext ctx) {
         if (!SqlModeHelper.hasNoBackSlashEscapes()) {
             s = LogicalPlanBuilderAssistant.escapeBackSlash(s);
         }
-        return new VarcharLiteral(s);
+        int strLength = Utils.containChinese(s) ? s.length() * StringLikeLiteral.CHINESE_CHAR_BYTE_LENGTH : s.length();
+        if (strLength > ScalarType.MAX_VARCHAR_LENGTH) {
+            return new StringLiteral(s);
+        }
+        return new VarcharLiteral(s, strLength);
     }
 
     /**

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/StringLikeLiteral.java

@@ -21,8 +21,11 @@
 
 import java.util.Objects;
 
-/** StringLikeLiteral. */
+/**
+ * StringLikeLiteral.
+ */
 public abstract class StringLikeLiteral extends Literal {
+    public static final int CHINESE_CHAR_BYTE_LENGTH = 4;
     public final String value;
 
     public StringLikeLiteral(String value, DataType dataType) {

fe/fe-core/src/main/java/org/apache/doris/nereids/util/Utils.java

@@ -277,4 +277,16 @@ public static String normalizeName(String name, String defaultName) {
         }
         return CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_UNDERSCORE, name);
     }
+
+    /**
+     * Check the content if contains chinese or not, if true when contains chinese or false
+     */
+    public static boolean containChinese(String text) {
+        for (char textChar : text.toCharArray()) {
+            if (Character.UnicodeScript.of(textChar) == Character.UnicodeScript.HAN) {
+                return true;
+            }
+        }
+        return false;
+    }
 }

fe/fe-core/src/test/java/org/apache/doris/nereids/util/UtilsTest.java

@@ -0,0 +1,35 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package org.apache.doris.nereids.util;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+/**
+ * The tests for utils
+ */
+public class UtilsTest {
+    @Test
+    public void containChinese() {
+        String chinese = "123数据库";
+        Assertions.assertTrue(Utils.containChinese(chinese));
+
+        String en = "database123";
+        Assertions.assertFalse(Utils.containChinese(en));
+    }
+}

regression-test/data/mtmv_p0/test_build_mtmv.out

@@ -60,3 +60,6 @@ zhangsang	200
 -- !select_union --
 11	111
 
+-- !desc_mv --
+field_1	VARCHAR(16)	No	false	\N	NONE
+

regression-test/suites/mtmv_p0/test_build_mtmv.groovy

@@ -38,7 +38,7 @@ suite("test_build_mtmv") {
             id BIGINT,
             username VARCHAR(20)
         )
-        DISTRIBUTED BY HASH(id) BUCKETS 10 
+        DISTRIBUTED BY HASH(id) BUCKETS 10
         PROPERTIES (
             "replication_num" = "1"
         );
@@ -52,7 +52,7 @@ suite("test_build_mtmv") {
             id BIGINT,
             pv BIGINT
         )
-        DISTRIBUTED BY HASH(id) BUCKETS 10 
+        DISTRIBUTED BY HASH(id) BUCKETS 10
         PROPERTIES (
             "replication_num" = "1"
         );
@@ -580,4 +580,59 @@ suite("test_build_mtmv") {
   sql """
       DROP MATERIALIZED VIEW ${mvName}
      """
+
+    // test build mv which containing literal varchar field
+    sql """
+    drop table if exists lineitem
+    """
+    sql """
+    CREATE TABLE IF NOT EXISTS lineitem (
+      l_orderkey    INTEGER NOT NULL,
+      l_partkey     INTEGER NOT NULL,
+      l_suppkey     INTEGER NOT NULL,
+      l_linenumber  INTEGER NOT NULL,
+      l_quantity    DECIMALV3(15,2) NOT NULL,
+      l_extendedprice  DECIMALV3(15,2) NOT NULL,
+      l_discount    DECIMALV3(15,2) NOT NULL,
+      l_tax         DECIMALV3(15,2) NOT NULL,
+      l_returnflag  CHAR(1) NOT NULL,
+      l_linestatus  CHAR(1) NOT NULL,
+      l_shipdate    DATE NOT NULL,
+      l_commitdate  DATE NOT NULL,
+      l_receiptdate DATE NOT NULL,
+      l_shipinstruct CHAR(25) NOT NULL,
+      l_shipmode     CHAR(10) NOT NULL,
+      l_comment      VARCHAR(44) NOT NULL
+    )
+    DUPLICATE KEY(l_orderkey, l_partkey, l_suppkey, l_linenumber)
+    PARTITION BY RANGE(l_shipdate) (
+    PARTITION `day_2` VALUES LESS THAN ('2023-12-9'),
+    PARTITION `day_3` VALUES LESS THAN ("2023-12-11"),
+    PARTITION `day_4` VALUES LESS THAN ("2023-12-30")
+    )
+    DISTRIBUTED BY HASH(l_orderkey) BUCKETS 3
+    PROPERTIES (
+      "replication_num" = "1"
+    )
+    """
+
+    sql """
+    insert into lineitem values
+    (1, 2, 3, 4, 5.5, 6.5, 7.5, 8.5, 'o', 'k', '2023-12-08', '2023-12-09', '2023-12-10', 'a', 'b', 'yyyyyyyyy'),
+    (2, 4, 3, 4, 5.5, 6.5, 7.5, 8.5, 'o', 'k', '2023-12-09', '2023-12-09', '2023-12-10', 'a', 'b', 'yyyyyyyyy'),
+    (3, 2, 4, 4, 5.5, 6.5, 7.5, 8.5, 'o', 'k', '2023-12-10', '2023-12-09', '2023-12-10', 'a', 'b', 'yyyyyyyyy'),
+    (4, 3, 3, 4, 5.5, 6.5, 7.5, 8.5, 'o', 'k', '2023-12-11', '2023-12-09', '2023-12-10', 'a', 'b', 'yyyyyyyyy'),
+    (5, 2, 3, 6, 7.5, 8.5, 9.5, 10.5, 'k', 'o', '2023-12-12', '2023-12-12', '2023-12-13', 'c', 'd', 'xxxxxxxxx');
+    """
+
+    sql """DROP MATERIALIZED VIEW IF EXISTS test_varchar_literal_mv;"""
+    sql """
+        CREATE MATERIALIZED VIEW test_varchar_literal_mv
+            BUILD IMMEDIATE REFRESH AUTO ON MANUAL
+            DISTRIBUTED BY RANDOM BUCKETS 2
+            PROPERTIES ('replication_num' = '1')
+            AS
+            select case when l_orderkey > 1 then "一二三四" else "五六七八" end as field_1 from lineitem;
+    """
+    qt_desc_mv """desc test_varchar_literal_mv;"""
 }