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  • SQL更改数据库多表column属性

    drop table #a

    select identity(int,1,1) as Id, table_name, column_name, Is_Nullable, Data_Type
    into #a
    from INFORMATION_SCHEMA.COLUMNS where column_name='ModelID' and Data_Type<>'Bigint'

    select * from #a

    declare @Id int
    declare @table nvarchar(50)
    declare @column nvarchar(50)
    declare @is_nullable nvarchar(50)
    set @Id=1

    while @Id<=(select max(id) from #a)
    begin
     set @table=(select table_name from #a where id=@id)
     set @column=(select column_name from #a where id=@id)
     set @is_nullable=case when (select is_nullable from #a where id=@id)='No' then 'not null' else '' end;
    print @table
    print @column
    print @is_nullable
     alter table @table alter @column Bigint @is_nullable
     set @id=@id+1
     continue
    end

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  • 原文地址:https://www.cnblogs.com/Ammy/p/1187943.html
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