在基於條件的Mysql觸發器中使用Select INTO語句

Question

我想寫一個觸發器。 觸發器以以下方式工作：

當表R_published獲取一個新條目時，根據條目（R_published.whichPublishable）中的列值，它需要將行分別從project_task_goodread_master表或project_document_master表復制到R_publishedGoodReads或R_publishedDocuments表中。

我編寫了以下觸發器，但出現了錯誤：“＃1327-未聲明的變量：R_publishedGoodReads”

CREATE TRIGGER trigger_after_published

    AFTER INSERT ON R_published

    FOR EACH ROW

    BEGIN

    IF (NEW.whichPublishable=1) THEN

        SELECT *  INTO R_publishedGoodReads FROM project_task_goodread_master 
WHERE

 goodReadID= new.publishedItemId;

    ELSEIF (NEW.whichPublishable=2) THEN 

      SELECT * INTO R_publishedDocuments FROM project_document_master where 

 documentID=new.publishedItemId;

      END IF 

END 

語法有什么問題嗎？ 我需要聲明要用於插入的表名嗎？ 謝謝。

Answer 1

MySQL不支持SELECT ... INTO TABLE。 參見MySQL文檔

Answer 2

請嘗試：

IF (NEW.whichPublishable=1) THEN
    INSERT INTO R_publishedGoodReads (col1, col2...)
    SELECT col1, col2... FROM project_task_goodread_master 
    WHERE goodReadID= new.publishedItemId;