private boolean primaryExpression_sempred(PrimaryExpressionContext _localctx, int predIndex) {
		switch (predIndex) {
		case 14:
			return precpred(_ctx, 8);
		case 15:
			return precpred(_ctx, 6);
		}
		return true;
	}
When true, the behavior of keywords follows ANSI SQL standard.
amoro-format-mixed/amoro-mixed-spark/v3.2/amoro-mixed-spark-3.2/src/main/gen-antlr/org/apache/amoro/spark/sql/parser/MixedFormatSqlExtendParser.java