public final Ddl_statementContext ddl_statement() throws RecognitionException {
		Ddl_statementContext _localctx = new Ddl_statementContext(_ctx, getState());
		enterRule(_localctx, 4, RULE_ddl_statement);
		try {
			setState(138);
			switch (_input.LA(1)) {
			case DROP:
				enterOuterAlt(_localctx, 1);
				{
				setState(134); drop_statement();
				}
				break;
			case CREATE:
				enterOuterAlt(_localctx, 2);
				{
				setState(135); create_statement();
				}
				break;
			case ALTER:
				enterOuterAlt(_localctx, 3);
				{
				setState(136); alter_statement();
				}
				break;
			case UPDATE:
				enterOuterAlt(_localctx, 4);
				{
				setState(137); update_statement();
				}
				break;
			default:
				throw new NoViableAltException(this);
			}
		}
		catch (RecognitionException re) {
			_localctx.exception = re;
			_errHandler.reportError(this, re);
			_errHandler.recover(this, re);
		}
		finally {
			exitRule();
		}
		return _localctx;
	}