delete table from database

The source of this article: http://www.cnblogs.com/wy123/p/6704619.htmlIssue backgroundIn a write SQL Server stored procedure, if a temporary table is defined in the stored procedure,Some people are used to explicitly delete a temporary table

Add a delete modify field with an SQL statement 1. Add Field ALTER TABLE DOCDSP add Dspcode char (200) 2. Delete fields ALTER TABLE table_name DROP COLUMN column_name 3. Modify the field type ALTER TABLE table_name ALTER COLUMN COLUMN_NAME

1. if the data is important, back up the data first. 2. delete the table data SQL: DeleteFrom (#39; table name #39;) For example: DeleteFromabcd 3. execute the new SQL statement: dbcccheckident (#39; table name #39;, reseed, 0) for example:

database table Basic Operations After thinking, finally the name of the blog changed to the basic operation of the database table, formerly called the SQL statement Daquan, feeling with "Daquan" this noun is too big, and the

Messages table:Mysql>create Table Messages (->message_id int Auto_increment primary KEY,->user_name varchar () NOT NULL,->author_id int NOT NULL,->body text,->forum_id int not NULL);Forums Table:Mysql>create Table Forums (->forum_id int

1. Understand the database and create new:1) Open the database and connect to the server.2) service type without tube.3) server name: Make a point "." Indicates that the server is on the local computer and, if it is hosted on someone else's server,

oracle| Design | data | Repeat we may have this situation, a table originally poorly designed, resulting in the table data data duplication, then, how to delete the duplicate data? Duplicate data may have two scenarios, the first one being only

Create a table, create a database, delete a table, delete a database Create a database Create DATABASE Text2 Text22. Deleting a databaseDrop database Text2 Delete the databases Text2 Create a table The CREATE table class

Requirement: delete an Oracle database to delete 10 million historical records from a common heap table. Impact of direct deletion: 1. The deletion may fail due to insufficient undo tablespace. Requirement: delete an Oracle database to delete 10

1. Understand the database and create new:1) Open the database and connect to the server.2) service type without tube.3) server name: Make a point "." Indicates that the server is on the local computer and, if it is hosted on someone else's server,