资讯

If your business uses relational databases to store data, you may have used a SQL SELECT clause to create new tables from query results. This method won't work in SQL Server, but Microsoft's Trans ...
That being the case, you’ll need a couple additional columns of datetime2 data type, the VALIDFROM and VALIDTO columns, which tells SQL Server which snapshot of the temporal table to use when querying ...
In SQL Server 2014 there were a number of restrictions on memory-optimized tables: you couldn't alter their structure after they were created; many SQL operators weren't supported (Outer Joins, ...
It's not, as Mary Ann Richardson shows us. SQL Server lets you use one command to quickly create a new table containing a subset of records from a larger table. For example, suppose in Access you ...
SQL Server 2016 and Azure SQL Database both give you tables that automatically keep track of changes to your data. Here's how to both create those tables and alter existing tables so they track the ...
SQL Server 2008 introduces the ability to pass a table data type into stored procedures and functions. The table parameter feature can greatly ease the development process because you no longer ...
The third form of the CREATE TABLE statement stores the results of any query-expression in a table and does not display the output. It is a convenient way to create temporary tables that are subsets ...
SQL Server throws a wobbly when one tries to declare/create the same-named temporary table more than once in the same procedure - I guess the query analyser assumes that all temp table creations ...