This statement is ANSI SQL:2011 compliant.
Use POSITION instead of INDEX for ANSI SQL:2011 conformance. POSITION and INDEX behave identically except when the client character set is KanjiEBCDIC and the server character for an argument is KANJI1 and contains multibyte characters.
Use POSITION in place of MINDEX. (MINDEX no longer appears in this book because its use is deprecated and it will not be supported after support for KANJI1 is dropped.)