小编ann*_*ous的帖子

我有一个JSON对象，其中包含一份帐单下的产品列表。我想为其编写一个mysql函数，该函数从json读取数据并对其进行一个接一个的迭代，并将相同的数据插入到product和bill表中。

这是我的json对象

    {"billNo":16,"date":"2017-13-11 09:05:01","customerName":"Vikas","total":350.0,"fixedCharges":100,"taxAmount":25.78,"status":paid,"product":[{"productId":"MRR11","categoryId":72,"categoryName":"Parker Pen","cost":200,"quantity":2,"log":{"supplierId":"725","supplierName":"Rihant General Stores"}},{"productId":"MRR12","categoryId":56,"categoryName":"Drawing Books","cost":150,"quantity":3,"log":{"supplierId":"725","supplierName":"Rihant General Stores"}}]}

在这里，我有一个mysql函数，它从JSON读取数据

    CREATE DEFINER=`mydb`@`%` FUNCTION `raiseOrder`(dataObject Json) 
    RETURNS bigint(11)
    BEGIN
        DECLARE billNo BIGINT(11) DEFAULT NULL;
        DECLARE customerName VARCHAR(64);
        DECLARE date datetime DEFAULT NOW();
        DECLARE total   Float(12,2);
        DECLARE taxamt Float(12,2);
        DECLARE fixedCharges Float(12,2);

        DECLARE products json;
        DECLARE productId bigint(15) DEFAULT NULL;
        DECLARE categoryId bigint(11);
        DECLARE cost float;
        DECLARE categoryName varchar(64);
        DECLARE quantity int default 0;
        DECLARE supplierId bigint(11);
        DECLARE supplierName varchar(128);


        SET billNo = (SELECT JSON_EXTRACT(dataObject, "$.billNo"));
        SET customerName = (SELECT JSON_EXTRACT(dataObject, …