docs: trim functions updates (#1650)

* updates

* updates

* updates

Author: soyeric128

docs/en/sql-reference/20-sql-functions/06-string-functions/ltrim.md

@@ -3,9 +3,9 @@ title: LTRIM
 ---
 import FunctionDescription from '@site/src/components/FunctionDescription';
 
-<FunctionDescription description="Introduced or updated: v1.2.659"/>
+<FunctionDescription description="Introduced or updated: v1.2.694"/>
 
-Removes specific characters from the beginning (left side) of a string.
+Removes all occurrences of any character present in the specified trim string from the left side of the string.
 
 See also: 
 
@@ -15,17 +15,17 @@ See also:
 ## Syntax
 
 ```sql
-LTRIM(<string>, <trim_character>)
+LTRIM(<string>, <trim_string>)
 ```
 
 ## Examples
 
 ```sql
-SELECT LTRIM('xxdatabend', 'xx');
+SELECT LTRIM('xxdatabend', 'xx'), LTRIM('xxdatabend', 'xy');
 
-┌───────────────────────────┐
-│ ltrim('xxdatabend', 'xx') │
-├───────────────────────────┤
-│ databend                  │
-└───────────────────────────┘
+┌───────────────────────────────────────────────────────┐
+│ ltrim('xxdatabend', 'xx') │ ltrim('xxdatabend', 'xy') │
+├───────────────────────────┼───────────────────────────┤
+│ databend                  │ databend                  │
+└───────────────────────────────────────────────────────┘
 ```

docs/en/sql-reference/20-sql-functions/06-string-functions/rtrim.md

@@ -3,9 +3,9 @@ title: RTRIM
 ---
 import FunctionDescription from '@site/src/components/FunctionDescription';
 
-<FunctionDescription description="Introduced or updated: v1.2.659"/>
+<FunctionDescription description="Introduced or updated: v1.2.694"/>
 
-Removes specific characters from the end (right side) of a string.
+Removes all occurrences of any character present in the specified trim string from the right side of the string.
 
 See also: 
 
@@ -15,17 +15,17 @@ See also:
 ## Syntax
 
 ```sql
-RTRIM(<string>, <trim_character>)
+RTRIM(<string>, <trim_string>)
 ```
 
 ## Examples
 
 ```sql
-SELECT RTRIM('databendxx', 'xx');
+SELECT RTRIM('databendxx', 'x'), RTRIM('databendxx', 'xy');
 
-┌───────────────────────────┐
-│ rtrim('databendxx', 'xx') │
-├───────────────────────────┤
-│ databend                  │
-└───────────────────────────┘
+┌──────────────────────────────────────────────────────┐
+│ rtrim('databendxx', 'x') │ rtrim('databendxx', 'xy') │
+├──────────────────────────┼───────────────────────────┤
+│ databend                 │ databend                  │
+└──────────────────────────────────────────────────────┘
 ```

docs/en/sql-reference/20-sql-functions/06-string-functions/trim-both.md

@@ -2,24 +2,24 @@
 title: TRIM_BOTH
 ---
 
-Removes specific characters from both ends of a string.
+Removes all occurrences of the specified trim string from the beginning, end, or both sides of the string.
 
 See also: [TRIM](trim.md)
 
 ## Syntax
 
 ```sql
-TRIM_BOTH(<string>, <trim_character>)
+TRIM_BOTH(<string>, <trim_string>)
 ```
 
 ## Examples
 
 ```sql
-SELECT TRIM_BOTH('xxdatabendxx', 'xx');
+SELECT TRIM_BOTH('xxdatabendxx', 'xxx'), TRIM_BOTH('xxdatabendxx', 'xx'), TRIM_BOTH('xxdatabendxx', 'x');
 
-┌─────────────────────────────────┐
-│ trim_both('xxdatabendxx', 'xx') │
-├─────────────────────────────────┤
-│ databend                        │
-└─────────────────────────────────┘
+┌─────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│ trim_both('xxdatabendxx', 'xxx') │ trim_both('xxdatabendxx', 'xx') │ trim_both('xxdatabendxx', 'x') │
+├──────────────────────────────────┼─────────────────────────────────┼────────────────────────────────┤
+│ xxdatabendxx                     │ databend                        │ databend                       │
+└─────────────────────────────────────────────────────────────────────────────────────────────────────┘
 ```

docs/en/sql-reference/20-sql-functions/06-string-functions/trim-leading.md

@@ -2,7 +2,7 @@
 title: TRIM_LEADING
 ---
 
-Removes specific characters from the beginning (left side) of a string.
+Removes all occurrences of the specified trim string from the beginning of the string.
 
 See also: 
 
@@ -12,17 +12,17 @@ See also:
 ## Syntax
 
 ```sql
-TRIM_LEADING(<string>, <trim_character>)
+TRIM_LEADING(<string>, <trim_string>)
 ```
 
 ## Examples
 
 ```sql
-SELECT TRIM_LEADING('xxdatabend', 'xx');
+SELECT TRIM_LEADING('xxdatabend', 'xxx'), TRIM_LEADING('xxdatabend', 'xx'), TRIM_LEADING('xxdatabend', 'x');
 
-┌──────────────────────────────────┐
-│ trim_leading('xxdatabend', 'xx') │
-├──────────────────────────────────┤
-│ databend                         │
-└──────────────────────────────────┘
+┌────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│ trim_leading('xxdatabend', 'xxx') │ trim_leading('xxdatabend', 'xx') │ trim_leading('xxdatabend', 'x') │
+├───────────────────────────────────┼──────────────────────────────────┼─────────────────────────────────┤
+│ xxdatabend                        │ databend                         │ databend                        │
+└────────────────────────────────────────────────────────────────────────────────────────────────────────┘
 ```

docs/en/sql-reference/20-sql-functions/06-string-functions/trim-trailing.md

@@ -2,7 +2,7 @@
 title: TRIM_TRAILING
 ---
 
-Removes specific characters from the end (right side) of a string.
+Removes all occurrences of the specified trim string from the end of the string.
 
 See also: 
 
@@ -12,17 +12,17 @@ See also:
 ## Syntax
 
 ```sql
-TRIM_TRAILING(<string>, <trim_character>)
+TRIM_TRAILING(<string>, <trim_string>)
 ```
 
 ## Examples
 
 ```sql
-SELECT TRIM_TRAILING('databendxx', 'xx');
+SELECT TRIM_TRAILING('databendxx', 'xxx'), TRIM_TRAILING('databendxx', 'xx'), TRIM_TRAILING('databendxx', 'x');
 
-┌───────────────────────────────────┐
-│ trim_trailing('databendxx', 'xx') │
-├───────────────────────────────────┤
-│ databend                          │
-└───────────────────────────────────┘
+┌───────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│ trim_trailing('databendxx', 'xxx') │ trim_trailing('databendxx', 'xx') │ trim_trailing('databendxx', 'x') │
+├────────────────────────────────────┼───────────────────────────────────┼──────────────────────────────────┤
+│ databendxx                         │ databend                          │ databend                         │
+└───────────────────────────────────────────────────────────────────────────────────────────────────────────┘
 ```