In PostgreSQL you can use the EXTRACT() function to get the month from a date.
You can also use the DATE_PART() function to do the same thing.
Category: DBMS
Database Management Systems
Convert Month Number to Month Name in PostgreSQL
You can use the following code examples in PostgreSQL if you have a month number but you want the month name instead.
Convert Month Name to Month Number in PostgreSQL
In PostgreSQL, if you already have a month name, but you want to convert that name to the month number, you can do this with the EXTRACT() function.
Get the Month Name from a Date in PostgreSQL
If you’re familiar with PostgreSQL, you might know that you can use the EXTRACT() and the DATE_PART() functions to extract the month from a date. But those functions only allow you to extract the month number.
What if you need the month name?
You can get the month name from a date by using the TO_CHAR() function. This function returns a string based on the timestamp and the template pattern you provide as arguments.
How to Use GOTO in SQL Server
In SQL Server, you can use GOTO to alter the flow of execution. You can use it to “jump” to another part in the T-SQL code.
The way it works is, you create a label, then you can use GOTO to jump to that label. Any code between GOTO and the label are skipped, and processing continues at the label.
GOTO statements and labels can be used anywhere within a procedure, batch, or statement block. They can also be nested.
Difference Between sys.sql_modules, sys.system_sql_modules, & sys.all_sql_modules in SQL Server
In SQL Server the sys.sql_modules, sys.system_sql_modules, and sys.all_sql_modules system catalog views return metadata about SQL language-defined modules in SQL Server.
However, there is a difference between them.
Difference Between Local and Global Temporary Tables in SQL Server
When you create a temporary table in SQL Server, you have the option of making it a local or global temporary table.
Here’s a quick outline of the main differences between local temporary tables and global temporary tables.
5 Ways to List Temporary Tables using T-SQL
In SQL Server, you can use any of the following five ways to return a list of temporary tables using Transact-SQL.
These return both local and global temporary tables.
Create a Temporary Table Based on Another Table in SQL Server
In SQL Server you can create a temporary table based on another table by using the SELECT... INTO syntax.
You can create the table with or without data. In other words, you can copy data from the original table if you wish, or you can create the table without any data.
Difference Between sys.parameters, sys.system_parameters, & sys.all_parameters in SQL Server
If you’re looking for a catalog view to return parameter information in SQL Server, you have a choice. In particular, you can get parameter information from sys.parameters, sys.system_parameters, and sys.all_parameters.
However, you will probably only want to use one of these views, as there are differences between them.