Name
Alter table -- change the definition of a table
Synopsis
ALTER TABLE [ ONLY ] name [ * ] action [, ... ]ALTER TABLE [ ONLY ] name [ * ] RENAME [ COLUMN ] column TO new_columnALTER TABLE name RENAME TO new_nameALTER TABLE name SET
1.sp_helpsort SELECT serverproperty (' collation ')See your sorting rules.But you should have something to do with the character set.2. Change Server Collation Changing the default collation of an instance of SQL Server 2005 can be complex,
This is the definition of collate on books online. When I was helping my colleagues solve a database problem today, I encountered the cannot resolve collation conflict for equal to operation,Update sec_usrdata
Set userid = new_id
From sec_usrdata,
About UPDATE and ALTER:Baidu knows about the update and alter has a very image of the summary: A table has a lot of fields, a field has a lot of data. A family has a lot of rooms, a room with a lot of furniture. Update is used to change the wardrobe
Transferred from: http://blog.51cto.com/jimshu/1095780Concepts and details please refer to: Character encoding and sorting rules: https://www.cnblogs.com/gered/p/9145123.htmlI. Modifying the collation of a SQL Server server (instance)The following
The concept of character set is clear to everyone. Many people do not understand the proofreading rules. This concept is not used in general database development. mysql seems very advanced in convenience.
The concept of character set is clear to
Brief Description
Character set and proofing rules
A character set is a set of symbols and encodings. A proofing rule is a set of rules used to compare characters within a character set.
MySQL in collation to provide strong support, oracel in this
MySQL database table collation inconsistency results in a query that does not work on the indexTable is more descriptive: Add the Worktask table in the MySQL database to the Ishaspic field.How to Do: (1) Database Worktask table New Add whether there
Brief Description
Character Set and verification rulesCharacter Set is a set of symbols and encoding. A collation is a set of rules used to compare characters in a character set.MySql provides strong support in collation, and mongoel does not find
The MySQL ALTER TABLE statement can modify the basic structure of the table, such as adding fields, deleting fields, adding primary keys, adding indexes, modifying field data types, renaming tables, and so on, and this article introduces the use of
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