Create ltrim.md

Author: soyeric128

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

@@ -0,0 +1,26 @@
+---
+title: LTRIM
+---
+import FunctionDescription from '@site/src/components/FunctionDescription';
+
+<FunctionDescription description="Introduced or updated: v1.2.659"/>
+
+Removes specific characters from the beginning (left side) of a string.
+
+## Syntax
+
+```sql
+LTRIM(<string>, <trim_character>)
+```
+
+## Examples
+
+```sql
+SELECT LTRIM('xxdatabend', 'xx');
+
+┌───────────────────────────┐
+│ ltrim('xxdatabend', 'xx') │
+├───────────────────────────┤
+│ databend                  │
+└───────────────────────────┘
+```