TYPO3 Core

When the label or label_alt field of the TCA ctrl section of a table is set, but empty, the default receiver class of TCEforms suggest creates a SELECT clause like this:

<field> LIKE "bla%" OR LIKE "bla%"

The problem arises because there is no check for empty field names, as usually the settings label and label_alt should not be defined if there is no value for them. With some extensions (e.g. tt_news), this is the case though.

The attached patch also fixes a problem with operator precedence in SQL if more than one field is queried for the query string.

(issue imported from #M11917)