Method or

src/main/java/com/sql/parse/statement/impl/druid/Select.java:179–188

@title: or @desc "OR"符号

(SQLExpr where)

     * @desc "OR"符号
     */
    public Select or(SQLExpr where) {
        SQLSelectQueryBlock queryBlock = select.getSelect().getQueryBlock();
        SQLExpr oldWhere = queryBlock.getWhere();
        if (oldWhere == null) {
            throw BaseException.errorCode(SqlParseConstant.CODE_006);
        } else {
            queryBlock.setWhere(ExpressionBuilder.or(oldWhere, where));
        }
        return this;
    }

    public Select or(String expr) {
        SQLExpr expression = ExpressionBuilder.parse(expr);