public final FileFormatContext fileFormat() throws RecognitionException {
		FileFormatContext _localctx = new FileFormatContext(_ctx, getState());
		enterRule(_localctx, 42, RULE_fileFormat);
		try {
			setState(422);
			_errHandler.sync(this);
			switch ( getInterpreter().adaptivePredict(_input,29,_ctx) ) {
			case 1:
				_localctx = new TableFileFormatContext(_localctx);
				enterOuterAlt(_localctx, 1);
				{
				setState(417);
				match(INPUTFORMAT);
				setState(418);
				((TableFileFormatContext)_localctx).inFmt = match(STRING);
				setState(419);
				match(OUTPUTFORMAT);
				setState(420);
				((TableFileFormatContext)_localctx).outFmt = match(STRING);
				}
				break;
			case 2:
				_localctx = new GenericFileFormatContext(_localctx);
				enterOuterAlt(_localctx, 2);
				{
				setState(421);
				identifier();
				}
				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/v3.3/amoro-mixed-spark-3.3/src/main/gen-antlr/org/apache/amoro/spark/sql/parser/MixedFormatSqlExtendParser.java