Category: Queries

In this section, we are going to learn how we can delete the data from the particular table using the Delete command in the PostgreSQL. The DELETE command is used to delete all existing records from a table. And the WHERE clause is used to remove the selected records or else, all the data would be eliminated. Note: The TRUNCATE…

In this tutorial, we are going to learn the PostgreSQL UPDATE command for updating the current data in a table. In PostgreSQL, the UPDATE command is used to change the present records in a table. To update the selected rows, we have to use the WHERE clause; otherwise, all rows would be updated. Syntax of Update command The syntax of…

In PostgreSQL, the SELECT command is the core command used to retrieve data from a database table, and the data is returned in the form of a result table, which is called result-sets. The select command contains several clauses that we can use to write a query easily. The basic task while performing the select command is to…

In this section, we are going to learn the PostgreSQL insert command and examples, insert a date using the default keyword, and insert the data from one table to another in PostgreSQL pgAdmin and SQL shell (psql). In PostgreSQL, the INSERT command is used to insert new rows into a table. We can insert a single row or multiple…