public final StrictIdentifierContext strictIdentifier() throws RecognitionException {
		StrictIdentifierContext _localctx = new StrictIdentifierContext(_ctx, getState());
		enterRule(_localctx, 204, RULE_strictIdentifier);
		try {
			setState(1864);
			_errHandler.sync(this);
			switch ( getInterpreter().adaptivePredict(_input,253,_ctx) ) {
			case 1:
				_localctx = new UnquotedIdentifierContext(_localctx);
				enterOuterAlt(_localctx, 1);
				{
				setState(1858);
				match(IDENTIFIER);
				}
				break;
			case 2:
				_localctx = new QuotedIdentifierAlternativeContext(_localctx);
				enterOuterAlt(_localctx, 2);
				{
				setState(1859);
				quotedIdentifier();
				}
				break;
			case 3:
				_localctx = new UnquotedIdentifierContext(_localctx);
				enterOuterAlt(_localctx, 3);
				{
				setState(1860);
				if (!(SQL_standard_keyword_behavior)) throw new FailedPredicateException(this, "SQL_standard_keyword_behavior");
				setState(1861);
				ansiNonReserved();
				}
				break;
			case 4:
				_localctx = new UnquotedIdentifierContext(_localctx);
				enterOuterAlt(_localctx, 4);
				{
				setState(1862);
				if (!(!SQL_standard_keyword_behavior)) throw new FailedPredicateException(this, "!SQL_standard_keyword_behavior");
				setState(1863);
				nonReserved();
				}
				break;
			}
		}
		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