ltrim

Removes the leading spaces or specified characters from the beginning (left) of the str argument. Removing specified characters are supported from StarRocks 2.5.0.

Syntax

VARCHAR ltrim(VARCHAR str[, VARCHAR characters])

Parameters

str: required, the string to trim, which must evaluate to a VARCHAR value.

characters: optional, the characters to remove, which must be a VARCHAR value. If this parameter is not specified, spaces are removed from the string by default. If this parameter is set to an empty string, an error is returned.

Return value

Returns a VARCHAR value.

Examples

Example 1: Remove spaces from the beginning of the string.

MySQL > SELECT ltrim('   ab d');
+------------------+
| ltrim('   ab d') |
+------------------+
| ab d             |
+------------------+

Example 2: Remove specified characters from the beginning of the string.

MySQL > SELECT ltrim("xxabcdxx", "x");
+------------------------+
| ltrim('xxabcdxx', 'x') |
+------------------------+
| abcdxx                 |
+------------------------+

References

• trim
• rtrim

keyword

LTRIM