MySQL SQL - How To Delete All Rows a Table

Home > MySQL > SQL

How To Delete All Rows a Table

Q

How To Delete All Rows a Table? - MySQL FAQs - Understanding SQL INSERT, UPDATE and DELETE Statements

✍: FYIcenter.com

A

If you want to delete all rows from a table, you have two options:

Use the DELETE statement with no WHERE clause.
Use the TRUNCATE TABLE statement.

The TRUNCATE statement is more efficient the DELETE statement. The tutorial exercise shows you a good example of TRUNCATE statement:

mysql> SELECT COUNT(*) FROM fyi_links;
+----------+
| COUNT(*) |
+----------+
|        5 |
+----------+
1 row in set (0.08 sec)

mysql> TRUNCATE TABLE fyi_links;
Query OK, 0 rows affected (0.02 sec)

mysql> SELECT COUNT(*) FROM fyi_links;
+----------+
| COUNT(*) |
+----------+
|        0 |
+----------+
1 row in set (0.00 sec)

2007-05-11, 5825👍, 0💬

How To Create a Testing Table with Test Data
How To Create a Testing Table with Test Data? - MySQL FAQs - SQL SELECT Query Statements with GROUP BY If you want to follow the tutorial exercises presented in this collection, you need to create a testing table and insert some test data, as shown in the following sample script: mysql> CREATE TABLE... 2007-05-11, 4265👍, 0💬

How To Delete Multiple Rows from a Table
How To Delete Multiple Rows from a Table? - MySQL FAQs - Understanding SQL INSERT, UPDATE and DELETE Statements You can delete multiple rows from a table in the same way as deleting a single row, except that the WHERE clause will match multiple rows. The tutorial exercise below deletes 3 rows from t... 2007-05-11, 4228👍, 0💬

How To Delete an Existing Row from a Table
How To Delete an Existing Row from a Table? - MySQL FAQs - Understanding SQL INSERT, UPDATE and DELETE Statements If you want to delete an existing row from a table, you can use the DELETE statement with a WHERE clause to identify that row. Here is good sample of DELETE statements: mysql> INSERT INT... 2007-05-11, 4212👍, 0💬

What Is a SELECT Query Statement
What Is a SELECT Query Statement? - MySQL FAQs - SQL SELECT Query Statements with GROUP BY The SELECT statement is also called the query statement. It is the most frequently used SQL statement in any database application. A SELECT statement allows you to retrieve data from one or more tables or view... 2007-05-11, 4131👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.