Examples with Interval com.alibaba.cobar.parser.ast.expression.primary.function.comparison.Interval used on opensource projects

Example 1 with Interval

use of com.alibaba.cobar.parser.ast.expression.primary.function.comparison.Interval in project cobar by alibaba.

the class MySQLExprParser method intervalExpression.

/**
     * first <code>INTERVAL</code> has been consumed
     */
private Expression intervalExpression() throws SQLSyntaxErrorException {
    Expression fstExpr;
    List<Expression> argList = null;
    if (lexer.token() == PUNC_LEFT_PAREN) {
        if (lexer.nextToken() == KW_SELECT) {
            fstExpr = subQuery();
            match(PUNC_RIGHT_PAREN);
        } else {
            fstExpr = expression();
            if (lexer.token() == PUNC_COMMA) {
                lexer.nextToken();
                argList = new LinkedList<Expression>();
                argList.add(fstExpr);
                argList = expressionList(argList);
            } else {
                match(PUNC_RIGHT_PAREN);
            }
        }
    } else {
        fstExpr = expression();
    }
    if (argList != null) {
        return new Interval(argList).setCacheEvalRst(cacheEvalRst);
    }
    return new IntervalPrimary(fstExpr, intervalPrimaryUnit()).setCacheEvalRst(cacheEvalRst);
}