A table is: mysql> desc gifts; +---------------+-------------+------+-----+---------+----------------+
How do I rename a primary key column i开发者_开发百科n MySQL?it\'s no different than altering any other column --
Can I drop primary key i开发者_运维百科ndex without dropping primary key constraint in postgresql?Your question is a bit confusing. I think you must mean this:
I\'m trying to learn how to use keys and to break the habit of necessarily having SERIAL type IDs for all rows in all my tables.At the same time, I\'m also doing many-to-many relationships, and so req
Is there any way to massively alter primary keys(uid) toall tables with no primary keys in sql server database ? I have a lot开发者_运维知识库 of tables and most of them don not have primary keys.
If I have a table of a hundred users normally I would just set up an auto-increment userID column as t开发者_StackOverflow社区he primary key. But if suddenly we have a million users or 5 million users
In Django Design Patterns, the author recommends using zlib.crc32 to mask primary keys in URLs. After some quick testing, I noticed that crc32 produces negative integers about half the tim开发者_Pytho
So I have a table with an identity column as the pri开发者_如何学运维mary key, so it is an integer. So, why does SCOPE_IDENTITY() always return a decimal value instead of an int to my C# application?
I have a linq to sql table/class that uses a GUID as both a primary key and as foreign key. This problem came up when factoring some code that previously worked.
I have a table (session_comments) with the following fields structure: student_id (foreign key to students table)