update like with escape clause doc

docs/sql-manual/basic-element/operators/conditional-operators/pattern-matching-operators.md

@@ -42,13 +42,14 @@ The LIKE condition specifies a test involving pattern matching. The equality com
 The syntax is as follows:
 
 ```sql
-<char1> [ NOT ] LIKE <char2>
+<char1> [ NOT ] LIKE <char2> [ ESCAPE 'char_escape' ]
 ```
 
 Where:
 
 - `char1` is a character expression (such as a character column), known as the search value.
 - `char2` is a character expression, usually a string literal, known as the pattern.
+- `char_escape` (optional) is a character expression and must be a character of length 1 (under ascii encoding). It allows you to define escape characters, and if you do not provide char_escape, the default ' \ ' is an escape character.
 
 Both character expressions (`char1`, `char2`) can be any of CHAR, VARCHAR, or STRING data types. If they are different, Doris will convert them all to VARCHAR or STRING.
 
@@ -57,6 +58,39 @@ Patterns can include special pattern matching characters:
 - The underscore (`_`) in the pattern matches exactly one character in the value.
 - The percent sign (`%`) in the pattern can match zero or multiple characters in the value. The pattern `%` cannot match NULL.
 
+### Example
+
+
+```sql
+select "%a" like "\%_";
+```
+
+The result is as follows, because "%" is a special character, it needs to be escaped with "\%" to match correctly.
+
+```text
++-----------------+
+| "%a" like "\%_" |
++-----------------+
+|               1 |
++-----------------+
+```
+
+
+```sql
+select "%a" like "a%_" ESCAPE "a";
+```
+
+The difference from the previous example is that "a" is specified as the escape character.
+
+```text
++----------------------------+
+| "%a" like "a%_" ESCAPE "a" |
++----------------------------+
+|                          1 |
++----------------------------+
+```
+
+
 ### REGEXP (RLIKE)
 
 REGEXP is similar to the LIKE condition, differing in that REGEXP performs regular expression matching, rather than the simple pattern matching performed by LIKE. This condition uses a set of input characters defined by a character to evaluate strings.

i18n/zh-CN/docusaurus-plugin-content-docs/current/sql-manual/basic-element/operators/conditional-operators/pattern-matching-operators.md

@@ -42,13 +42,14 @@ LIKE 条件指定一个涉及模式匹配的测试。等值比较运算符（=
 语法如下：
 
 ```sql
-<char1> [ NOT ] LIKE <char2>
+<char1> [ NOT ] LIKE <char2> [ ESCAPE 'char_escape' ]
 ```
 
 其中：
 
-- char1 是一个字符表达式（如字符列），称为搜索值。
-- char2 是一个字符表达式，通常是一个字面量，称为模式。
+- char1 是一个字符表达式（如字符列），称为搜索串。
+- char2 是一个字符表达式，通常是一个字面量，称为模式串。
+- char_escape (可选) 是一个字符表达式，必须是一个长度为1的字符 ( ascii 编码下 )。 它允许您定义转义字符，如果您不提供char_escape，则默认 ‘ \ ’是转义字符。
 
 所有字符表达式（char1、char2）都可以是 CHAR、VARCHAR 或 STRING 数据类型中的任何一种。如果它们不同，则 Doris 会将它们全部转换为 VARCHAR 或者 STRING。
 
@@ -57,6 +58,38 @@ LIKE 条件指定一个涉及模式匹配的测试。等值比较运算符（=
 - 模式中的下划线 (_) 与值中的一个字符完全匹配。
 - 模式中的百分号 (%) 可以与值中的零个或多个字符匹配。模式 '%' 不能与 NULL 匹配。
 
+### 示例
+
+```sql
+select "%a" like "\%_";
+```
+
+结果如下，因为 "%" 是特殊字符，所以需要用 "\%" 进行转义才能正确匹配。
+
+```text
++-----------------+
+| "%a" like "\%_" |
++-----------------+
+|               1 |
++-----------------+
+```
+
+
+```sql
+select "%a" like "a%_" ESCAPE "a";
+```
+
+与之前的例子的区别在于有指定 "a" 作为转义字符。
+
+```text
++----------------------------+
+| "%a" like "a%_" ESCAPE "a" |
++----------------------------+
+|                          1 |
++----------------------------+
+```
+
+
 ### REGEXP（RLIKE）
 
 REGEXP 与 LIKE 条件类似，不同之处在于 REGEXP 执行正则表达式匹配，而不是 LIKE 执行的简单模式匹配。此条件使用输入字符集定义的字符来评估字符串。