ALIASES are used in Postgres to provide a temporary name to the columns, tables, etc., while executing/writing Postgres queries.
Education
Professional Postgres and Open Source support
Command Prompt, Inc., is the oldest Postgres Company in North America and one of the oldest Open Source firms still operating today. We serve our clients with best in class expertise and professionalism. You can read more about support and services here:
- Postgres Support
- PgLTS: Extended Support for EOL Postgres
- Open Source Full Stack Support
- Try the latest PgManage (Open Source) and get rid of PgAdmin!
You have landed at the largest single source of Postgres education blogs in the world. At Command Prompt, we believe deeply that the education of the community is critical to the continued success of Postgres and related technologies. We hope you find content you are looking for and don't hesitate to Contact us today for all your Postgres and Open Source consulting and support needs.
How to Fix Column Does not Exist Exception/Error in PostgreSQL
In Postgres, the “column doesn’t exist” error occurs because of various reasons, such as the searched column doesn’t exist, typo mistakes, column alias being used incorrectly, etc.
How to Define an Auto Increment Primary Key in PostgreSQL
To define an auto-incremented primary key in Postgres, specify a column name followed by a pseudo data type named “SERIAL”, and then specify the PRIMARY KEY keyword.
ARRAY_TO_STRING() Function in PostgreSQL
PostgreSQL offers an ARRAY_TO_STRING() function that accepts three arguments: an array, a delimiter, and a text to replace the null values.
PostgreSQL TRUNC() VS ROUND() Function
The TRUNC() function trims the whole fractional part or up to specified precision, while the ROUND() function rounds the input number to the nearest integer/specified fractional places.
String Arrays in PostgreSQL
PostgreSQL allows us to create a string array using one of three data types: CHAR, VARCHAR, and TEXT. Once an array is created, various operations can be performed on that array.
ARRAY_REMOVE() Function in PostgreSQL
ARRAY_REMOVE() function accepts an array and a specific number as arguments and deletes all the occurrences of that particular number from the input array.
How to Update Multiple Rows in PostgreSQL
In PostgreSQL, the UPDATE statement must be executed with the semi-colon-separated syntax to modify multiple rows with different values.
ARRAY_REPLACE() Function in PostgreSQL
The ARRAY_REPLACE() is an inbuilt array function in Postgres that allows us to replace all the occurrences of an array element with a new element.
Wildcards in PostgreSQL With Practical Examples
Pattern matching in PostgreSQL is performed using wildcards. PostgreSQL offers two wildcards represented with a percentage sign “%” and an underscore sign “_”.
Get Postgres Help!
PgLTS: Extended Support for EOL Postgres
Podcasts
