Rollback scripts are designed to allow us to recover safely from a failed deployment that leaves the database in an indeterminate state. They must check exactly what needs to be reverted before doing so. If you work with an RDBMS that cannot support transaction DDL rollback they are vital. This article proposes a strategy where you create and test a rollback file, at the same time as the forward migration, and reuse it as a Flyway undo script.
Developers, in general, are very optimistic about the code they write. This is likely one cause of their estimates of the time required being low, as well as the various bugs that slip through because of corner cases that appear for the problem being solved. Often developers think they've considered the various ways this code […]
Learn how you can set up and use Ledger tables in an Azure SQL Database to verify the integrity of your database changes.
In this tip, we cover how to use the GENERATE_SERIES function to expand a range of dates into rows
Use SELECT statements to query a MySQL database. In this article, Robert Sheldon explains how.
Many people have used a "Numbers" or "Tally" table without really knowing what it does. This is an introduction as to how a Tally table replaces a loop.
A generic way of exporting, deleting and loading data, for database development work. It uses Flyway Teams, a PowerShell framework, JSON files for storage and a table manifest to define the correct order of dependency for each task. It should help a team maintain datasets between database versions, as well as to switch between the datasets required to support different types of testing.
Learn about various SQL Server system functions to return meta data from SQL Server such as SERVERPROPERTY, DATABASEPROPERTYEX, DB_NAME, DB_ID, FILE_NAME, FILE_ID, FILE_IDEX, SCHEMA_NAME, SCHEMA_ID, OBJECT_NAME, OBJECT_ID and STATS_DATE.
New licensing rules are coming for using your SQL Server licenses in the cloud.
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It's 2 AM. Your phone is going off. Users can't connect to the application,...
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I discovered a procedure recently that I wasn’t aware of: sp_sequence_get_range. This post looks...
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After a year away getting to grips with AI and its application across the...
Fisher Phillips is looking for a Financial Systems Administrator to help support and improve our financial...
Employee owned company, been around for over 50 years. Hybrid opportunity, looking folks in Pacific...
i have huge table with lot of data and is also wide. i took...
I want to create a JSON document that contains data from this table:
TeamID TeamNameCity YearEstablished 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933 3 Packers Green Bay 1919 4 Chiefs Kansas City 1960If I run this code, what document(s) is/are returned?
SELECT json_objectagg( n.city : n.TeamName) FROM dbo.NFLTeams;See possible answers