public final JoinTypeContext joinType() throws RecognitionException {
		JoinTypeContext _localctx = new JoinTypeContext(_ctx, getState());
		enterRule(_localctx, 100, RULE_joinType);
		int _la;
		try {
			setState(965);
			_errHandler.sync(this);
			switch ( getInterpreter().adaptivePredict(_input,130,_ctx) ) {
			case 1:
				enterOuterAlt(_localctx, 1);
				{
				setState(942);
				_errHandler.sync(this);
				_la = _input.LA(1);
				if (_la==INNER) {
					{
					setState(941);
					match(INNER);
					}
				}

				}
				break;
			case 2:
				enterOuterAlt(_localctx, 2);
				{
				setState(944);
				match(CROSS);
				}
				break;
			case 3:
				enterOuterAlt(_localctx, 3);
				{
				setState(945);
				match(LEFT);
				setState(947);
				_errHandler.sync(this);
				_la = _input.LA(1);
				if (_la==OUTER) {
					{
					setState(946);
					match(OUTER);
					}
				}

				}
				break;
			case 4:
				enterOuterAlt(_localctx, 4);
				{
				setState(950);
				_errHandler.sync(this);
				_la = _input.LA(1);
				if (_la==LEFT) {
					{
					setState(949);
					match(LEFT);
					}
				}

				setState(952);
				match(SEMI);
				}
				break;
			case 5:
				enterOuterAlt(_localctx, 5);
				{
				setState(953);
				match(RIGHT);
				setState(955);
				_errHandler.sync(this);
				_la = _input.LA(1);
				if (_la==OUTER) {
					{
					setState(954);
					match(OUTER);
					}
				}

				}
				break;
			case 6:
				enterOuterAlt(_localctx, 6);
				{
				setState(957);
				match(FULL);
				setState(959);
				_errHandler.sync(this);
				_la = _input.LA(1);
				if (_la==OUTER) {
					{
					setState(958);
					match(OUTER);
					}
				}

				}
				break;
			case 7:
				enterOuterAlt(_localctx, 7);
				{
				setState(962);
				_errHandler.sync(this);
				_la = _input.LA(1);
				if (_la==LEFT) {
					{
					setState(961);
					match(LEFT);
					}
				}

				setState(964);
				match(ANTI);
				}
				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