如果在 10 个变量之间[关闭]

Question

ALTER procedure FullSearch(@txtSearch as nvarchar(500),@a1 as  bit,@a2 as bit,@a3 as bit,
@a4 as bit,@a5 as bit) 
as 
begin
    if(@a1='true' and @a2='false' and @a3='false' and @a4='false' and @a5='false')
    begin
         select a1 from b where a1 like '%'+@txtSearch+%'
    end
    if(@a1='false' and @a2='true' and @a3='false' and @a4='false' and @a5='false')
    begin
         select a2 from b where a2 like '%'+@txtSearch+%'
    end
    if(@a1='false' and @a2='false' and @a3='true' and @a4='false' and @a5='false')
    begin
         select a3 from b where a3 like '%'+@txtSearch+%'
    end
    if(@a1='false' and @a2='false' and @a3='false' and @a4='true' and @a5='false')
    begin
         select a4 from b where a4 like '%'+@txtSearch+%'
    end
     if(@a1='false' and @a2='false' and @a3='false' and @a4='false' and @a5='true')
    begin
         select a5 from b where a5 like '%'+@txtSearch+%'
    end
    if(@a1='true' and @a2='true' and @a3='false' and @a4='false' and @a5='true')
    begin
         select a1,a2 from b where a1 like '%'+@txtSearch+%' or  a2 like '%'+@txtSearch+%' 
    end
    if(@a1='true' and @a2='false' and @a3='true' and @a4='false' and @a5='true')
    begin
         select a1,a3 from b where a1 like '%'+@txtSearch+%' or a3 like '%'+@txtSearch+%'
    end
    if(@a1='true' and @a2='false' and @a3='false' and @a4='true' and @a5='true')
    begin
         select a1,a4 from b where a1 like '%'+@txtSearch+%' or a4 like '%'+@txtSearch+%'
    end
    .
    . 
    .
    .
end

我在搜索框 a1-a5 到复选框那个用户可以选择 a1 和 a2 和 a3 和 a4 和 a5

如果选择的字段 a1Û a1字段数据库搜索

如果选择的字段 a2Û a2字段数据库搜索

如果选中的字段 a1,a2؛ a1,a2 字段数据库搜索

如果选中字段 a2,a5؛ a2,a5 字段数据库搜索

如果选择字段 a2,a4,a5؛ a2,a4,a5 字段数据库搜索

如果使用 a1-a9，所有状态检查是否是 5 个非常非常大的阶乘

有更简单的方法可以做到这一点。

这是一种算法，可以用任何语言 c、c#、vb 完成

Answer 1

您需要使用动态 SQL 并生成句子。查看this 链接。请特别注意使用sp_executesql部分。类似的东西几乎正是您所需要的。