alter-table
insert a NOT NULL column to an existing table
I have tried: ALTER TABLE MY_TABLE ADD STAGE INT NOT NULL; But it gives this error message: ALT开发者_运维知识库ER TABLE only allows columns to be added that can contain nulls or[详细]
2023-01-11 13:40 分类:问答MYSQL alter table - add INDEX + FOREIGN KEY give error 1005
what is wrong with this alter table command: ALTER TABLE `lp` ADD COLUMN `RuleId` INT(10) NOT NULL DEFAULT -111 AFTER `Weight` , ,[详细]
2023-01-11 05:36 分类:问答Column creation and use
I am fairly new to SQL, so not sure if this is just a SQL compiler thing or not.When I have used SQL before it\'s been through JAVA or PHP, never just straight SQL.I am using SQL Server 2005 and attem[详细]
2023-01-10 22:59 分类:问答Alter Table Set unique error on postgres
I am using Postgres as DBMS and Django. My model that defines the table is: class TtnetModem(models.Model):[详细]
2023-01-10 04:11 分类:问答Alter Table in SQL Server Transaction
I\'m trying to write this transaction where I\'m trying to add a column to a table using TRY..CATCH and TRANSACTION. Here\'s my code. But the problem is the column already exists in the table and the[详细]
2023-01-10 01:16 分类:问答MySQL triggers alteration
Is there any way how to 开发者_StackOverflow社区update automatically mysql trigger(s) structure, every time when I alter a table?No - any alteration that impacts the trigger requires you to update sep[详细]
2023-01-09 04:23 分类:问答search simple way to alter multi tables in one time in mysql
i have a lot of tables that start with some prefix , and i want to alter this tables what is the simple wayto do this (instead run over all tables)[详细]
2023-01-07 22:36 分类:问答Problem with Postgres ALTER TABLE
I have one problem with the ALTER TABLE in postgre. I w开发者_Python百科ant to change size of the varchar column. When I try to do this, It says that the view is dependent on that column. I can\'t dro[详细]
2023-01-07 06:22 分类:问答MySQL: How to add a column if it doesn't already exist?
I want to add a colu开发者_JS百科mn to a table, but I don\'t want it to fail if it has already been added to the table. How can I achieve this?[详细]
2023-01-07 05:49 分类:问答Change a Nullable column to NOT NULL with Default Value
I came across an old table today with a datetime column called \'Created\' which allows nulls.Now, I\'d want to change this s开发者_如何学Co that it is NOT NULL, and also include a constraint to add i[详细]
2023-01-06 08:49 分类:问答