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  with adod_dict do
    begin
    close;
    commandtext:='select bgqxcode,count(*) wjsl from wscl_wsda_file where wjnd=:tnd group by bgqxcode';
    parameters[0].DataType:=ftstring;
    parameters[0].Value:=trim(cbtjnd.Text);
    open;
    end;

ÒÔÉÏÊÇdelphiÖеÄÓï¾ä£¬ÔËÐÐʱ£¬ÀÏÊDZ¨ora-00979 ²»ÊÇ group by ±í´ïʽ?

ORA-00979 not a GROUP BY expression

Cause: The GROUP BY clause does not contain all the expressions in the SELECT clause. SELECT expressions that are not included in a group function, such as AVG, COUNT, MAX, MIN, SUM, STDDEV, or VARIANCE, must be listed in the GROUP BY clause.

Action: Include in the GROUP BY clause all SELECT expressions that are not group function arguments.


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