Every Database Has Problems
The magic way to get better performance from your system is to write better code from the start.
2026-04-22
44 reads
multi-platform
Formatting Dates and Times: The SQL Dialect Divide
If you’ve ever had to format dates and times in SQL, you’ve probably come across one of the most jarring realities of working across platforms: every major RDBMS does it differently and sometimes confusingly. What’s a TO_CHAR() in Oracle becomes FORMAT() or CONVERT() in SQL Server, and its sort of the same in PostgreSQL… but […]
2025-07-11
218 reads
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
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
Delete SQL Statement in SQL Server, Oracle and PostgreSQL
Learn about the differences and similarities when deleting data from SQL Server, Oracle and PostgreSQL with the several examples in this article.
2021-03-16
SQL Update Statement with Join in SQL Server vs Oracle vs PostgreSQL
In this article we look at the different SQL syntax you need to use when updating data when joining tables for SQL Server, Oracle and PostgreSQL.
2021-01-29
Multi-Platform Mobile Development with PhoneGap
Of course it seems a great idea to have your application on all the main mobile platforms as well as on the desktop. However, as Arkadiusz Pachucy knows all too well, this can ultimately leave you with a full-scale maintenance nightmare. In this article he looks at whether technologies like PhoneGap/Cordova or Adobe Air could be the perfect compromise - and if so, what frameworks to use.
2015-08-24
3,088 reads
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Creating a JSON Document II
Comments posted to this topic are about the item Creating a JSON Document II
Question of the Day
Creating a JSON Document II
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