将逗号分隔的字符串拆分为mysql中的表

Question

我在sql server中创建了类似http://ole.michelsen.dk/blog/split-string-to-table-using-transact-sql.html的函数，我发送了csv字符串 ＆＃34; 1,2,3,4,5＆＃34;它就像桌子一样。可以在mysql中有类似的东西

我必须通过＆＃34; 1,2,3,4,5＆＃34; as Text或varchar（1000）

Select Id from CSVToTable(merchantsIds) 
    where id not in 
    (
        SELECT DISTINCT merchantid 
        FROM `transaction`
        WHERE `statusid` =_status            
    )

记住我的商品字段属于int类型

Answer 1

试试这个存储过程...

创建此sproc后，您可以像这样调用它

致电split_tags_into_rows（＆＃39; ram，shyam，mohan，1，2012-01-03＆＃39;，＆＃39;，＆＃39;）;

-- STORED PROCEDURES

DROP PROCEDURE IF EXISTS split_tags_into_rows;

DELIMITER #

CREATE PROCEDURE split_tags_into_rows(IN _in_tags_to_be_seperated VARCHAR(8000), IN _in_seperator CHAR(3))
proc_main:BEGIN -- 1. Begin Proc

DECLARE v_keyword VARCHAR(255);
DECLARE v_keyword_id MEDIUMINT UNSIGNED;

-- Iteration variable (v_tags_done: if done through each and every work of input string paramter, 
--       v_tags_idx: currently running id )
DECLARE v_tags_done TINYINT UNSIGNED;
DECLARE v_tags_idx INT UNSIGNED;

-- Temporary Table Declaration & initialization (as DB doesn't support array, we've to split the incoming tag based and put each and
-- every "tag" into temporary table, MAKE SURE TO DROP IT BEFORE LEAVING THE PROC)
-- drop temporary table
DROP TEMPORARY TABLE IF EXISTS temp_token_to_delete;

--  create temporary table
CREATE TEMPORARY TABLE temp_token_to_delete (Id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, Word VARCHAR(256));

-- 
SET autocommit = 0; 

  -- split the out the _in_tags_to_be_seperated and insert into temporary table
  SET v_tags_done = 0;       
  SET v_tags_idx = 1;

  WHILE NOT v_tags_done DO -- 1.BEGIN WHILE  
    -- get the word from "," to "," 
    SET v_keyword = SUBSTRING(_in_tags_to_be_seperated, v_tags_idx, 
      IF(LOCATE(_in_seperator, _in_tags_to_be_seperated, v_tags_idx) > 0, 
        LOCATE(_in_seperator, _in_tags_to_be_seperated, v_tags_idx) - v_tags_idx, 
        LENGTH(_in_tags_to_be_seperated))
        );

      IF LENGTH(v_keyword) > 0 THEN

        SET v_tags_idx = v_tags_idx + LENGTH(v_keyword) + 1;

        SET v_keyword = TRIM(v_keyword);

        -- add the keyword into temporary table
        INSERT IGNORE INTO temp_token_to_delete (Word) VALUES (v_keyword);

      ELSE
        SET v_tags_done = 1;
      END IF;

  END WHILE; -- 1.END WHILE  

COMMIT;

-- Select records 
SELECT Id, Word FROM temp_token_to_delete;

-- Clean your DB: drop temporary table (it should be last statement
--                                      , if you want to use the data of temporary table in between the proc)
DROP TEMPORARY TABLE IF EXISTS temp_token_to_delete;

END proc_main # -- -- 1. End Proc