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declare @sql varchar(1000)
declare @con1 int
set @sql = ' select @con = count(*) from [schoolbooks].[dbo].[b_user]'
exec sp_executesql @sql,N'@con int output',@con1 output
print @con1
declare @sql nvarchar(1000)
declare @con1 int
set @sql = ' select @con = count(*) from [schoolbooks].[dbo].[b_user]'
exec sp_executesql @sql,N'@con int output',@con1 output
print @con1