In PostgreSQL, a table is used to organize the complex, detailed, and unordered data. A table can be created using the "CREATE TABLE" statement.
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PostgreSQL JSON Data: How it Works
The JSON data type in Postgres stores the data in the form of key-value pairs. To create a table’s column with JSON data type, you can specify the column’s name followed by the “JSON” data type.
Understanding PostgreSQL Arrays
PostgreSQL allows us to define a table’s column as an array of any built-in data type, user-defined data type, or enumerated data type.
PostgreSQL CREATE DATABASE IF NOT EXISTS
Postgres doesn’t support the “IF NOT EXISTS” option for the CREATE DATABASE command. To achieve the functionality of the “IF NOT EXISTS” option, a subquery can be used in Postgres.
PostgreSQL Data Types Explained
PostgreSQL provides a wide range of data types, such as textual, numeric, and temporal, for efficient data storage and manipulation.
PostgreSQL Aggregate Functions With Practical Examples
To perform calculations on a set of rows, the aggregate functions are used. These functions perform calculations on the table rows and return only a single row.
How to Use GROUP BY Clause in PostgreSQL
The GROUP BY clause in PostgreSQL is used with the collaboration of the SELECT statement to group several rows/items.
BIGSERIAL, SMALLSERIAL, and SERIAL Data Types in PostgreSQL
In PostgreSQL, the main difference between the BIGSERIAL, SMALLSERIAL, and SERIAL is the range of numbers they can hold/store.
PostgreSQL - DATEADD - Add Interval to DateTime
Postgres allows us to add intervals to date time using the “+” and “-” operators. This post demonstrated various examples of adding intervals to DateTime values.
How to Insert or Delete Multiple Rows in PostgreSQL
Use the INSERT query with comma-separated syntax to insert multiple rows into a Postgres table. To delete multiple rows, use the DELETE statement with IN clause.
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