Drop an Existing Table in MySQL

Q

How To Drop an Existing Table in MySQL?

✍: FYIcenter.com

A

If you want to delete an existing table and its data rows, you can use the "DROP TABLE" statement as shown in the tutorial script below:

mysql> SELECT * FROM tipBackup;
+----+-------------+-------------------------+-------------+
| id | subject     | description             | create_date |
+----+-------------+-------------------------+-------------+
|  1 | Learn MySQL | Visit dev.fyicenter.com | 2006-07-01  |
+----+-------------+-------------------------+-------------+
1 row in set (0.40 sec)

mysql> DROP TABLE tipBackup;
Query OK, 0 rows affected (0.00 sec)

mysql> SELECT * FROM tipBackup;
ERROR 1146 (42S02): Table 'fyi.tipbackup' doesn't exist

Be careful, when you use the "DROP TABLE" statement. All data rows are gone too.

⇒ Create an Index for a Given Table in MySQL

⇐ Rename an Existing Table in MySQL

⇑ CREATE, ALTER and DROP Statements in MySQL

⇑⇑ MySQL Database Tutorials

2018-02-14, 2325🔥, 0💬

Add a New Column to an Existing Table in MySQL
How To Add a New Column to an Existing Table in MySQL? If you have an existing table with existing data rows, and want to add a new column to that table, you can use the "ALTER TABLE ... ADD COLUMN" statement. The tutorial script below shows you a good example: mysql> ALTER TABLE tip ADD COLU... 2018-03-04, 2556🔥, 0💬

Creating New Tables with SELECT Statements in MySQL
How To Create a New Table by Selecting Rows from Another Table in MySQL? Let's say you have a table with many data rows, now you want to create a backup copy of this table of all rows or a subset of them, you can use the "CREATE TABLE ... SELECT" statement. The tutorial script below gives you a good... 2018-03-04, 2530🔥, 0💬

Show All Indexes of a given Table in MySQL
How To Get a List of Indexes of a Given Table in MySQL? If you want to see the index you have just created for an existing table, you can use the "SHOW INDEX FROM tableName" command to get a list of all indexes in a given table. The tutorial script below shows you a nice example: mysql> SHOW ... 2018-02-14, 2497🔥, 0💬

Create an Index for a Given Table in MySQL
How To Create an Index for a Given Table in MySQL? If you have a table with a lots of rows, and you know that one of the columns will be used often as a search criteria, you can add an index for that column to improve the search performance. To add an index, you can use the "CREATE INDEX" statement ... 2018-02-14, 2438🔥, 0💬

Drop an Existing View in MySQL
How To Drop an Existing View in MySQL? If you have an existing view, and you don't want it anymore, you can delete it by using the "DROP VIEW viewName" statement as shown in the following script: mysql> DROP VIEW faqComment; Query OK, 0 rows affected (0.00 sec) mysql> SELECT * FROM faq... 2018-01-24, 2415🔥, 0💬

Drop an Existing Index in MySQL
How To Drop an Existing Index in MySQL? If you don't need an existing index any more, you should delete it with the "DROP INDEX indexName ON tableName" statement. Here is an example SQL script: mysql> DROP INDEX tip_subject ON tip; Query OK, 0 rows affected (0.13 sec) Records: 0 Duplicates: 0... 2018-02-14, 2363🔥, 0💬

Delete an Existing Column in a Table in MySQL
How To Delete an Existing Column in a Table in MySQL? If you have an existing column in a table and you do not need that column any more, you can delete it with "ALTER TABLE ... DROP COLUMN" statement. Here is a tutorial script to delete an existing column: mysql> ALTER TABLE tip DROP COLUMN ... 2018-03-04, 2337🔥, 0💬

Drop an Existing Table in MySQL
How To Drop an Existing Table in MySQL? If you want to delete an existing table and its data rows, you can use the "DROP TABLE" statement as shown in the tutorial script below: mysql> SELECT * FROM tipBackup; +----+-------------+---------- ---------------+-------------+| id | subject | descri... 2018-02-14, 2326🔥, 0💬

Create a New View in MySQL
How To Create a New View in MySQL? You can create a new view based on one or more existing tables by using the "CREATE VIEW viewName AS selectStatement" statement as shown in the following script: mysql> CREATE TABLE comment (faqID INTEGER, message VARCHAR(256)); Query OK, 0 rows affected (0.... 2018-01-24, 2248🔥, 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.