Tag: sql server

  • ADO 2.8 and Compatibility mode

    If you have old code, that access Sql Server through MS-ADO 2.8, you can have some trouble if connect to DB on Sql Server 2016 with compatibility mode do 2016 (130). You can experience some random error on update: Row cannot be located for updating. Some values may have been changed since it was last […]

  • Microsoft® SQL Server ® 2012 High-Performance T-SQL Using Window Functions

    Una ottima guida all’uso efficiente delle window function dell’SQL. La guida è aggiornata alla versione 2012 di SQL server, ma buona parte delle indicazioni sono utili anche per SQL Server 2005 e SQL Server 2008. Infatti la prima introduzione delle window function in SQL Server risale alla versione 2005. Microsoft® SQL Server® 2012 High-Performance T-SQL […]

  • Limits of EXEC and SP_EXECUTESQL

    One thing that is not clear from MSDN documentation is the limits of 8000 byte for query input of EXEC and SP_ECECUTESQL. If you execute this query: declare @query1 as varchar(max) set @query1= replicate(‘ ‘,7951)+ ‘ select top 1 object_id,name from sys.all_columns’ exec (@query1) declare @query2 as nvarchar(max) set @query2= replicate(N’ ‘,3951)+ N’ select top […]