Postgres and Open Source Experts

In Postgres, the HAVING clause is mostly used with the GROUP BY clause to filter the group/aggregate based on some specific condition.

In PostgreSQL, the DISTINCT keyword/clause is used within the SELECT statement to fetch the unique records from the result-set.

In PostgreSQL, specify the ORDER BY clause and column name followed by the ASC or DESC to sort the result set in ascending or descending order, respectively.

In PostgreSQL, the DELETE query can be used with or without the WHERE clause to delete a single, multiple, or all the rows of a specific table.

In PostgreSQL, the UPDATE query is used with the assistance of the SET clause to update or modify the table’s record/data.

The SELECT statement is used to fetch one or more columns of a table. It returns a resultant table which is known as the result set or result table.

In PostgreSQL, the AND and OR operators are used to combine more than one condition and are referred to as conjunctive, logical, or boolean operators.

In PostgreSQL, the WHERE clause is used to filter the results of different statements such as SELECT, DELETE, UPDATE, etc.

PostgreSQL provides a RENAME COLUMN clause that is used with the collaboration of ALTER TABLE command to rename a column.

In PostgreSQL, the “ALTER TABLE” and “ALTER COLUMN” commands, along with the TYPE Keyword, are used to change/modify the data type of any specific column.