Re: [SQL ] 刪除特定條件的語法問題
※ 引述《erho (ptt訪客)》之銘言:
: 我的資料庫是oracle
: 我要刪掉滿足下列語法的所有資料
: select he_code,eff_date from newmed
: minus
: select he_code,max(eff_date) from newmed group by he_code;
: 我用
: delete * from (select he_code,eff_date from newmed minus
: select he_code,max(eff_date) from newmed group by he_code);
: oracle 回應我錯誤訊息
: ERROR at line 1:ORA-00903: invalid table name
: 若把 * 號去掉則錯誤訊息為
: ERROR at line 1:
: ORA-01732: data manipulation operation not legal on this view
: 請問我要如何修正我的delete 語法
DELETE FROM newmed WHERE eff_date IN (SELECT eff_date FROM (SELECT he_code,
eff_date FROM newmed MINUS SELECT he_code, max(eff_date) FROM newmed GROUP BY
he_code));
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