trim(leading from <string>)

Apache DerbyBigQueryDb2 (LUW)H2MariaDBMySQLOracle DBPostgreSQLSQL ServerSQLite200520072009201120132015201720192021⊘ 3.5.7 - 3.43.0⊘ 2008R2 - 2022✓ 8.3 - 16✓ 11gR1 - 21c✓ 5.0 - 8.0.34✓ 5.1 - 10.11✓ 1.4.191 - 2.2.220✓ 9.7 - 11.5.8⊘ 2.0✓ -

The SQL function trim(leading from …) removes space characters from the begin (left side) of a string.

SELECT TRIM(LEADING FROM '   traveling spaces   ')
  FROM …

The result of the example is the text 'traveling space   ' with the leading spaces removed.

Normative References

The trim() function, including the leading from keywords, is defined in ISO/IEC 9075-2:2023 as mandatory feature E021-09, “TRIM function”.

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