PLS Database Error Messages PLS-00555: default expressions are not allowed for SQL operators April 20, 2021 mpbod PLS-00555: default expressions are not allowed for SQL operators Cause: A default expression has been specified for a SQL operator. Action: Eliminate the default expression from the operator. Back to previous menu https://support.oracle.com/ http://www.oracle.com/ Share this:Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)