关于一个很复杂的MYSQL查询排列场景的问题
一个产品包含了
货号 仓库 尺码 颜色 数量 等数据
MYSQL中也是按照这样的字段来进行存储的，但是有相同货号，不相同仓库，不同尺码的情况
现在我需要SELECT出的数据格式需求是
条目1——货号001 尺码 颜色 数量
————货号001 仓库002 尺码1的数量 尺码2的数量 尺码3的数量
条目2——货号002 尺码 颜色 数量
————货号002 仓库002 尺码1的数量 尺码2的数量 尺码3的数量
————货号002 仓库003 尺码1的数量 尺码2的数量 尺码3的数量
条目3——货号003 尺码 颜色
————货号003 仓库003 尺码1的数量 尺码2的数量 尺码3的数量
....
也就是将相同货号的货品合并起来然后分支出不同的仓库和不同的尺码
请问我要怎么写SELECT语句
我想应该是要写多层，效率最好的办法是什么？
回复内容：
一个产品包含了
货号 仓库 尺码 颜色 数量 等数据
MYSQL中也是按照这样的字段来进行存储的，但是有相同货号，不相同仓库，不同尺码的情况
现在我需要SELECT出的数据格式需求是
条目1——货号001 尺码 颜色 数量
————货号001 仓库002 尺码1的数量 尺码2的数量 尺码3的数量
条目2——货号002 尺码 颜色 数量
————货号002 仓库002 尺码1的数量 尺码2的数量 尺码3的数量
————货号002 仓库003 尺码1的数量 尺码2的数量 尺码3的数量
条目3——货号003 尺码 颜色
————货号003 仓库003 尺码1的数量 尺码2的数量 尺码3的数量
....
也就是将相同货号的货品合并起来然后分支出不同的仓库和不同的尺码
请问我要怎么写SELECT语句
我想应该是要写多层，效率最好的办法是什么？
你要考虑的是SKU
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