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MySQL: Support compound time units in EXTRACT and INTERVAL - #2700
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MySQL and MariaDB accept 11 compound time units in
EXTRACT(unit FROM expr)andINTERVAL expr unitexpressions (SECOND_MICROSECOND,MINUTE_MICROSECOND,MINUTE_SECOND,HOUR_MICROSECOND,HOUR_SECOND,HOUR_MINUTE,DAY_MICROSECOND,DAY_SECOND,DAY_MINUTE,DAY_HOUR,YEAR_MONTH), which previously failed withExpected: date/time fieldorINTERVAL requires a unit after the literal value:This change adds the 11 compound unit keywords and
DateTimeFieldvariants and recognizes them inParser::parse_date_time_fieldandParser::next_token_is_temporal_unit, gated by a newDialect::supports_compound_date_time_fieldsso other dialects keep treating the words as custom fields or rejecting them.Closes #2693
Dialects: MySQL, MariaDB
This PR was implemented with AI assistance.