在函数调用中返回许多列

时间:2013-07-25 17:24:16

标签: php mysql

虽然它运作正常,我想学习(我在网上阅读并查找示例但找不到任何内容)如果我在下面要求可能。正如你在我的函数中看到的那样,我将3列连接起来作为一个单独的字符串返回并在我的PHP代码中将其展开以使用它们。

我可以在不使用CONCAT_WS()的情况下一次性单独返回这3列,而不是在PHP中使用explode吗?

由于

我的MYSQL功能:

DROP FUNCTION IF EXISTS function_institute_university;

DELIMITER $$

CREATE FUNCTION function_institute_university (IN_partnership_id INTEGER(11))
RETURNS VARCHAR(250) DETERMINISTIC 
BEGIN
    DECLARE InsCode_UniID_UniCode VARCHAR(250);

    SELECT
        CONCAT_WS('~',
            UPPER(institute.Code),
            university.id,
            UPPER(university.UnivAcronym)
        ) INTO InsCode_UniID_UniCode
    FROM partnership
    LEFT JOIN institute ON institute.id = partnership.iid
    LEFT JOIN university ON university.id = partnership.uid
    WHERE
        partnership.id = IN_partnership_id AND
        partnership.active = '1'
      LIMIT 1;

    RETURN InsCode_UniID_UniCode;
END$$

DELIMITER ;

我的PHP代码:

$sql = "SELECT function_institute_university(15)";
$runSql = mysql_query($sql);

if(@mysql_num_rows($runSql) == 1)
{
   $newArray = mysql_fetch_array($runSql);
   list($instituteCode, $universityID, $universityCode) = explode('~', $newArray[0]);
}

1 个答案:

答案 0 :(得分:2)

更新:第二次看后,我发现您正在使用一个只返回一个值的函数(完全被忽略),您可以将其更改为过程吗?

SQL:

DROP PROCEDURE IF EXISTS procedure_institute_university;

DELIMITER $$

CREATE PROCEDURE procedure_institute_university (IN_partnership_id INTEGER(11))
BEGIN
    SELECT
        UPPER(institute.Code) as `institiute_code`,
        university.id as `university_id`,
        UPPER(university.UnivAcronym) as `university_acronym`
    FROM partnership
    LEFT JOIN institute ON institute.id = partnership.iid
    LEFT JOIN university ON university.id = partnership.uid
    WHERE
        partnership.id = IN_partnership_id AND
        partnership.active = '1'
      LIMIT 1;
END$$

PHP:

$sql = "call procedure_institute_university(15)";
$runSql = mysql_query($sql);

if(@mysql_num_rows($runSql) == 1)
{
   $newArray = mysql_fetch_array($runSql);
   list($instituteCode, $universityID, $universityCode) = $newArray[0]['institute_code'], $newArray[0]['university_id'], $newArray[0]['university_acronym'];
}

添加了别名,以便您可以确定检索到的内容。您也可以使用mysql_fetch_assochttp://php.net/manual/en/function.mysql-fetch-assoc.php)来获取关联数组。阅读文档时,请阅读该页面中的警告信息。