SQL Identity Column Gaps and Conversion in SQL Server, Oracle and PostgreSQL
Learn about identity column sequence gaps and changing an existing column to an identity column in SQL Server, Oracle and PostgreSQL.
2022-01-19
cross platform
SQL String functions in SQL Server, Oracle and PostgreSQL
In this article we look at how to use string functions to concatenate, replace, trim and get substrings in SQL Server, Oracle and PostgreSQL.
2021-10-25
Create, Populate, and Subset a Pandas Dataframe from a CSV File
In this article we demonstrate how to transfer data via a CSV file from a SQL Server database to a Pandas dataframe and then subset the dataframe in Python.
2021-09-03
SQL Window Functions in SQL Server, Oracle and PostgreSQL
In this article we look at using Window Functions in SQL Server, Oracle and PostgreSQL to see the differences and similarities of the syntax.
2021-04-19
A Unified Approach to Multi-DataBase Query Templates
While trying to get the information he needed out of various SQL, MySQL and Oracle environments, Michael finally got tired of endlessly flicking through reference manuals and having to work so hard just to formulate his queries. So he decided to build a cross-platform Query Template solution to make his life easier, and he even went as far as building a .NET control to be integrated into applications. He's been kind enough to share the control, and the theory behind it, with us.
2009-10-28
1,971 reads
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Question of the Day
Identities and Sequences III
When thinking of the Identity property for auto incrementing columns and sequences for the same action, which can be used with the BIGINT data type?
See possible answers