public final UnitToUnitIntervalContext unitToUnitInterval() throws RecognitionException {
		UnitToUnitIntervalContext _localctx = new UnitToUnitIntervalContext(_ctx, getState());
		enterRule(_localctx, 168, RULE_unitToUnitInterval);
		try {
			enterOuterAlt(_localctx, 1);
			{
			setState(1639);
			((UnitToUnitIntervalContext)_localctx).value = intervalValue();
			setState(1640);
			((UnitToUnitIntervalContext)_localctx).from = identifier();
			setState(1641);
			match(TO);
			setState(1642);
			((UnitToUnitIntervalContext)_localctx).to = identifier();
			}
		}
		catch (RecognitionException re) {
			_localctx.exception = re;
			_errHandler.reportError(this, re);
			_errHandler.recover(this, re);
		}
		finally {
			exitRule();
		}
		return _localctx;
	}
When true, the behavior of keywords follows ANSI SQL standard.
amoro-format-mixed/amoro-mixed-spark/v3.5/amoro-mixed-spark-3.5/src/main/gen-antlr/org/apache/amoro/spark/sql/parser/MixedFormatSqlExtendParser.java