mysql 存儲過程實現從一張表數據遷移到另一種表

    本文檔主要是描述怎么在一系列條件下將home_brand_manual_pdf的數據插入到brand_shuomingshu表中

1.首先數據的插入涉及到三張表，分別是home_brand(品牌)，home_brand_manual_pdf（品牌pdf手冊），brand_shuomingshu（品牌說明書）（此表剛開始沒數據，是空表）

2.表結構分別介紹

home_brand（ 品牌)：

 

 home_brand_manual_pdf （品牌pdf手冊）：

brand_shuomingshu（品牌說明書）

3.表遷移需要的一系列條件：

                    home_brand_manual_pdf與brand_shuomingshu表列以及home_brand的關系如下

           （1）列對應滿足以下關系

          

home_brand_manual_pdf	brand_shuomingshu	home_brand
id	pdfId
brandId		id（很重要）
name	pdfName
url	url
downloadUrl	downloadUrl
site	site
appId	appId
path	pdfPath
siteMemo	memo
size	pdfSize
error	pdfError
totals	pdfTotals
check	pdfCheck
text	pdfText
status	pdfStatus
createUser	createUser
createDate	createDate
updateDate	updateDate
updateUser	updateUser

       千萬注意：

         brandId列的值：  通過brand_shuomingshu.brandName到home_brand表中，根據name查詢，得到brand信息，將對應的id，作為home_brand_manual_pdf.brandId

    （2）過濾條件brand_shuomingshu表：status > 0 and pdfStatus > 0（即只需要將該條件下的數據遷移到brand_shuomingshu中）

4.通過存儲過程遷移數據，通過navicat(mysql可視化根據)建立的存儲過程如下（假設存儲過程名字為test）：

BEGIN
-- 需要定義接收游標數據的變量 
  DECLARE idp VARCHAR(255); 
  DECLARE brandIdp VARCHAR(255); 
  DECLARE namep VARCHAR(1000); 
  DECLARE urlp VARCHAR(1000);
	DECLARE downloadUrlp VARCHAR(1000); 
	DECLARE sitep VARCHAR(255);
	DECLARE appIdp VARCHAR(255);
  DECLARE pathp VARCHAR(255);
  DECLARE siteMemop VARCHAR(255);
	DECLARE sizep BIGINT(255); 
	DECLARE errorp VARCHAR(255); 
	DECLARE totalsp int(10);
	DECLARE checkp int(11);
	DECLARE textp  int(11);
	DECLARE statusp TINYINT(255); 
	DECLARE createUserp  VARCHAR(255);
	DECLARE createDatep  TIMESTAMP;
	DECLARE updateDatep  TIMESTAMP;
  DECLARE updateUserp  VARCHAR(255); 
  -- 遍歷數據結束標志
  DECLARE done INT DEFAULT FALSE;

  DECLARE cur CURSOR FOR SELECT
		brand_shuomingshu.pdfId AS id,
		home_brand.id AS brandId,
		brand_shuomingshu.pdfName AS `name`,
		brand_shuomingshu.url AS url,
		brand_shuomingshu.downloadUrl AS downloadUrl,
		brand_shuomingshu.site AS site,
		brand_shuomingshu.appId AS appId,
    brand_shuomingshu.pdfPath As path,
    brand_shuomingshu.memo AS siteMemo,
		brand_shuomingshu.pdfSize AS size,
		brand_shuomingshu.pdfError AS error,
		brand_shuomingshu.pdfTotals AS totals,
		brand_shuomingshu.pdfCheck AS `check`,
		brand_shuomingshu.pdfText AS text,
		brand_shuomingshu.pdfStatus AS `status`,
		brand_shuomingshu.createUser AS createUser,
		brand_shuomingshu.createDate AS createDate,
		brand_shuomingshu.updateUser AS updateUser,
		brand_shuomingshu.updateDate AS updateDate
		from brand_shuomingshu,home_brand where  brand_shuomingshu.brandName = home_brand.`name` AND brand_shuomingshu.`status` >0 
 AND brand_shuomingshu.pdfStatus>0;


  -- 將結束標志綁定到游標
  DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
  -- 打開游標
  OPEN cur;
  
  -- 開始循環
  read_loop: LOOP
    -- 提取游標里的數據
    FETCH cur INTO idp,brandIdp,namep,urlp,downloadUrlp,sitep,appIdp,pathp,siteMemop,sizep,errorp,totalsp,checkp,textp,statusp,createUserp,createDatep,updateUserp,updateDatep;
    -- 聲明結束的時候
    IF done THEN
      LEAVE read_loop;
    END IF;
    -- 這里做你想做的循環的事件

    INSERT INTO home_brand_manual_pdf VALUES (idp,brandIdp,namep,urlp,downloadUrlp,sitep,appIdp,pathp,siteMemop,sizep,errorp,totalsp,checkp,textp,statusp,createUserp,createDatep,updateUserp,updateDatep);

  END LOOP;
  -- 關閉游標
  CLOSE cur;

END

　　

 

　　然后執行該存儲過程call test即可