Can I use… E021-09, “TRIM function”

Apache DerbyBigQueryDb2 (LUW)aH2MariaDBMySQLOracle DBPostgreSQLSQL ServerSQLiteTRIM(<exp>)TRIM(BOTH FROM …)TRIM(LEADING FROM …)TRIM(TRAILING FROM …)TRIM(<char> FROM <exp>)
  1. No expression as trim character
  • Product specific forms: rtrim(), ltrim().

Normative References

E021-09, “TRIM function”, is defined in ISO/IEC 9075:2016-2 as mandatory feature. The trim() function, including all the ability to specify the remove character and the both, leading, trailing and from keywords was already part of Intermediate SQL-92.

About the Author

Photo of Markus Winand

Markus Winand is the SQL Renaissance Ambassador. He is on a mission to introduce developers to the evolution of SQL in the 21st century. Markus can be hired as trainer, speaker and consultant via

Buy his Book

Cover of “SQL Performance Explained”: Squirrel running on grass

The essence of SQL tuning in 200 pages

Buy now!
(paperback and/or PDF)

Paperback also available at

Hire Markus

Markus offers SQL training and consulting for developers working at companies of any size.
Learn more »

Connect with Markus Winand

Markus Winand on LinkedInMarkus Winand on XINGMarkus Winand on Twitter
“modern SQL” by Markus Winand is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License.
Legal | Contact | NO WARRANTY | Trademarks | Privacy and GDPR | CC-BY-NC-ND 3.0 license