首先将此过程添加到您的数据库中
http://forge.mysql.com/tools/tool.php?id=4
(编辑 2020-09-09,链接现已失效,但回路机找到源)
DELIMITER //
DROP PROCEDURE IF EXISTS split_string //
CREATE PROCEDURE split_string (
IN input TEXT
, IN `delimiter` VARCHAR(10)
)
SQL SECURITY INVOKER
COMMENT
'Splits a supplied string using using the given delimiter,
placing values in a temporary table'
BEGIN
DECLARE cur_position INT DEFAULT 1 ;
DECLARE remainder TEXT;
DECLARE cur_string VARCHAR(1000);
DECLARE delimiter_length TINYINT UNSIGNED;
DROP TEMPORARY TABLE IF EXISTS SplitValues;
CREATE TEMPORARY TABLE SplitValues (
value VARCHAR(1000) NOT NULL PRIMARY KEY
) ENGINE=MyISAM;
SET remainder = input;
SET delimiter_length = CHAR_LENGTH(delimiter);
WHILE CHAR_LENGTH(remainder) > 0 AND cur_position > 0 DO
SET cur_position = INSTR(remainder, `delimiter`);
IF cur_position = 0 THEN
SET cur_string = remainder;
ELSE
SET cur_string = LEFT(remainder, cur_position - 1);
END IF;
IF TRIM(cur_string) != '' THEN
INSERT INTO SplitValues VALUES (cur_string);
END IF;
SET remainder = SUBSTRING(remainder, cur_position + delimiter_length);
END WHILE;
END //
它将任何字符串拆分为临时表中的行。
将 Table1 中的列发送到该过程,并使用生成的临时表将值插入 Table3