Understanding SQL DML Statements for Oracle

Q

Where to find answers to frequently asked questions on SQL DML Statements for Oracle. I want insert and delete data in tables.

✍: FYIcenter.com

A

Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on SQL DML Statements for Oracle. Clear answers are provided with tutorial exercises on inserting, updating and deleting rows from database tables.

What Are DML Statements in Oracle

Create a Test Table for DML Testing in Oracle

Set Up SQL*Plus Output Format in Oracle

Insert a New Row into a Table in Oracle

Specify Default Values in INSERT Statements in Oracle

Omit Columns in INSERT Statements in Oracle

Insert Multiple Rows with 1 INSERT Statement in Oracle

Update Values in a Table in Oracle

Update Values on Multiple Rows in Oracle

Use Existing Column Values in SET Clause in Oracle

Use Values from Other Tables in UPDATE in Oracle

Error: Single-Row Subquery Returns More Than One Row in Oracle

Delete an Existing Row from a Table in Oracle

Delete Multiple Rows from a Table in Oracle

in Oracle

Sample scripts used in this FAQ assumes that you are connected to the server with the HR user account on the default database instance XE. See other FAQ collections on how to connect to the server.

Some sample scripts requires database tables created by other samples in the beginning of the collection.

⇒ What Are DML Statements in Oracle

⇐ Drop an Existing View in Oracle

⇑⇑ Oracle Database Tutorials

2020-02-07, 1422👍, 0💬

CREATE INDEX - Create a Table Index in Oracle
How To Create a Table Index in Oracle? If you have a table with a lots of rows, and you know that one of the columns will be used often a search criteria, you can add an index for that column to in improve the search performance. To add an index, you can use the CREATE INDEX statement as shown in th... 2020-02-20, 1443👍, 0💬

Understanding SQL DML Statements for Oracle
Where to find answers to frequently asked questions on SQL DML Statements for Oracle. I want insert and delete data in tables. Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on SQL DML Statements for Oracle. Clear answers are provided with tutorial ... 2020-02-07, 1423👍, 0💬

ALTER INDEX - Rename an Index in Oracle
How To Rename an Index in Oracle? Let's say you have an existing index, and you don't like its name anymore for some reason, you can rename it with the ALTER INDEX ... RENAME TO statement. Here is an example script on how to rename an index: CREATE TABLE student (id NUMBER(5) PRIMARY KEY, first_name... 2020-02-20, 1399👍, 0💬

Insert a New Row into a Table in Oracle
How To Insert a New Row into a Table in Oracle? To insert a new row into a table, you should use the INSERT INTO statement with values specified for all columns as shown in the following example: INSERT INTO fyi_links VALUES (101, 'http://dev.fyicenter.com', NULL, 0, '30-Apr-2006'); 1 row created. S... 2020-01-29, 1367👍, 0💬

What Are DML Statements in Oracle
What Are DML Statements in Oracle? DML (Data Manipulation Language) statements are statements to change data values in database tables. The are 3 primary DML statements: INSERT - Inserting new rows into database tables. UPDATE - Updating existing rows in database tables . DELETE - Deleting existing ... 2020-02-07, 1348👍, 0💬

Create a New View in Oracle
How To Create a New View in Oracle? You can create a new view based on one or more existing tables by using the CREATE VIEW statement as shown in the following script: CREATE VIEW employee_department AS SELECT e.employee_id, e.first_name, e.last_name, e.email, e.manager_id, d.department_name FROM em... 2020-02-07, 1347👍, 0💬

Drop an Existing Index in Oracle
How To Drop an Existing Index in Oracle? If you don't need an existing index any more, you should delete it with the DROP INDEX statement. Here is an example SQL script: CREATE TABLE student (id NUMBER(5) PRIMARY KEY, first_name VARCHAR(80) NOT NULL, last_name VARCHAR(80) NOT NULL, birth_date DATE N... 2020-02-20, 1262👍, 0💬

Create a Test Table for DML Testing in Oracle
How To Create a Testing Table in Oracle? If you want to practice DML statements, you should create a testing table as shown in the script below: CREATE TABLE fyi_links (id NUMBER(4) PRIMARY KEY, url VARCHAR2(80) NOT NULL, notes VARCHAR2(1024), counts NUMBER, created DATE DEFAULT (sysdate)); Table cr... 2020-02-07, 1247👍, 0💬

Drop an Existing View in Oracle
How To Drop an Existing View in Oracle? If you have an existing view, and you don't want it anymore, you can delete it by using the DROP VIEW statement as shown in the following script: DROP VIEW employee_department; View dropped. ⇒ Understanding SQL DML Statements for Oracle ⇐ Create a New View ... 2020-02-07, 1207👍, 0💬

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