小巧的人插入列表？ [英] Dapper insert a list?

问题描述

我要批量插入。 A是ID，B是ID列表。我的插入语句看起来像这样，但这是错误的。我如何重写它才能工作？我能想到的唯一解决方案是在语句外使用foreach循环

I want to do a bulk insert. A is an ID and B is a list of IDs. My insert statement looks like this but it is wrong. How do I rewrite it to work? The only solution I can think of is using a foreach loop outside the statement

.Execute(@"insert into MyTable(a,b) select @a, @b", new {a, b})

推荐答案

尝试以下操作：

var abs = b.Select(id => new { a, b = id });
int numInserted = connection
    .Execute(@"insert into MyTable(a,b) VALUES(@a, @b)", abs);

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