TRIM()

TRIM() is a SQL function in the String Functions category. Removes leading and/or trailing characters from a string (default: spaces). The syntax is TRIM([LEADING|TRAILING|BOTH] trim_char FROM string). It accepts trim_char FROM string. It returns trimmed string. A typical example: SELECT TRIM(' hello '); -- 'hello' SELECT TRIM(LEADING '0' FROM '00123'); -- '123' A close relative is CONCAT(), which concatenates two or more strings into one string. Returns NULL if any argument is NULL. A close relative is SUBSTRING(), which extracts characters from a string starting at position `start` for `length` characters. A close relative is REPLACE(), which replaces all occurrences of `from_string` with `to_string` in a string. More about this category: String manipulation — CONCAT, SUBSTRING, REPLACE, TRIM, UPPER, LOWER, LENGTH. Related String Functions entries: CONCAT(), SUBSTRING(), REPLACE(), LENGTH(), UPPER(), LOWER(), LPAD() / RPAD(), INSTR(). This page is part of the free SQL Reference documentation covering 762+ statements, functions, and clauses, each with syntax, parameters, return values, and examples for MySQL, PostgreSQL, SQL Server, and SQLite.