Oracle DML | DML Oracle | Data Manipulation Language




What is Data Manipulation Language (DML) ?

  • A data manipulation language (DML) is a family of computer languages including commands permitting users to manipulate data in a database.
  • Data manipulation language (DML) statements query and manipulate data in existing schema objects.
  • Oracle Command Types
  • These statements do not implicitly commit the current transaction.
  • The following are the DML statements available in Oracle.
    • INSERT
    • UPDATE
    • DELETE
    • SELECT
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INSERT:

  • The INSERT statement inserts rows into an existing table.
  • The simplest form of the INSERT statement has this syntax:
Oracle insert

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INSERT INTO table_name (list_of_columns) 
VALUES (list_of_values);
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UPDATE:

  • The UPDATE statement updates (changes the values of) a set of existing table rows.
  • A simple form of the UPDATE statement has this syntax:
Oracle create table

SQL Insert and Update Table

UPDATE table_name 
SET column_name = value [, column_name = value]...
[ WHERE condition ];
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Oracle update

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DELETE:

  • The DELETE statement deletes rows from a table.
  • A simple form of the DELETE statement has this syntax:
DELETE FROM table_name
[ WHERE condition ];
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Oracle delete row using where

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  • The SQL SELECT statement returns a result set of records from one or more tables.
  • A SELECT statement retrieves zero or more rows from one or more database tables or database views . In most applications, SELECT is the most commonly used data query language (DQL) command.

SELECT:

Oracle select from table

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SELECT * FROM TABLE_NAME
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