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SQL Trim Function


  SQL > SQL Commands > Trim

The TRIM function in SQL is used to remove specified prefix or suffix from a string. The most common pattern being removed is white spaces. This function is called differently in different databases:

  • MySQL: TRIM(), RTRIM(), LTRIM()
  • Oracle: RTRIM(), LTRIM()
  • SQL Server: RTRIM(), LTRIM()

The syntax for these trim functions are:

TRIM([[LOCATION] [remstr] FROM ] str): [LOCATION] can be either LEADING, TRAILING, or BOTH. This function gets rid of the [remstr] pattern from either the beginning of the string or the end of the string, or both. If no [remstr] is specified, white spaces are removed.

LTRIM(str): Removes all white spaces from the beginning of the string.

RTRIM(str): Removes all white spaces at the end of the string.

Example 1:

SELECT TRIM('   Sample   ');

Result:

'Sample'

Example 2:

SELECT LTRIM('   Sample   ');

Result:

'Sample   '

Example 3:

SELECT RTRIM('   Sample   ');

Result:

'   Sample'

SQL Length >>

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