How to modify a table using update and delete statement in SQL | update and delete statement in SQL

Published: 18 May 2022
on channel: Versatile Studio Max

Introduction
Oracle SQL Developer provides a SQL Worksheet that you can use to update data, by writing simple or complex SQL statements. In this How-To, we look at the most basic of these, inserting a record, updating single and multiple records, and deleting single or multiple records.

DELETE Statement
Description
The Oracle DELETE statement is used to delete a single record or multiple records from a table in Oracle.

Syntax
The syntax for the DELETE statement in Oracle/PLSQL is:

DELETE FROM table
[WHERE conditions];

UPDATE Statement
Description
The Oracle UPDATE statement is used to update existing records in a table in an Oracle database. There are 2 syntaxes for an update query in Oracle depending on whether you are performing a traditional update or updating one table with data from another table.

Syntax
The syntax for the UPDATE statement when updating one table in Oracle/PLSQL is:

UPDATE table
SET column1 = expression1,
column2 = expression2,
...
column_n = expression_n
[WHERE conditions];

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