50 Essential PostgreSQL Practice Queries: A Comprehensive Guide
50 Essential PostgreSQL Practice Queries: A Comprehensive Guide
Select all records from a table.
SELECT * FROM employees;
Select all records from a table.
SELECT * FROM employees;
Select specific columns from a table.
SELECT first_name, last_name, email FROM employees;
Select specific columns from a table.
SELECT first_name, last_name, email FROM employees;
Filter records based on specific conditions
SELECT * FROM employees WHERE hire_date >’2022-01-01′;
Filter records based on specific conditions
SELECT * FROM employees WHERE hire_date >’2022-01-01′;
Sort the results after a given column in ascending or descending order.
SELECT * FROM employees ORDERBY hire_date DESC;
Sort the results after a given column in ascending or descending order.
SELECT * FROM employees ORDERBY hire_date DESC;
Discard a specific record from the table.
DELETE FROM employees WHERE employee_id =1;
Discard a specific record from the table.
DELETE FROM employees WHERE employee_id =1;
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Click here for more PostgreSQL Practice Queries