alter-column
When increasing the size of VARCHAR column on a large table could there be any problems?
I\'m using SQL Server 2008 and I need to make a VARCHAR field bigger, from (200 to 1200) on a table with about 500k rows.What I need to know is if there are any issues I have not considered.[详细]
2023-04-07 04:57 分类：问答SQL Server: Double data size of a table when altering column type
I altered the type of a column in to an actual smaller type: -- change type from nvarchar(100) to varchar(50)[详细]
2023-03-11 20:32 分类：问答SQL Server 2005 - T-SQL to increase field size based on parameters
I\'m wondering if there is a way to loop through all of the columns in a table and increase the size of each field based on what the current size. Basically, I need any fields that currently have a fi[详细]
2023-02-12 21:36 分类：问答TSQL: How are values converted when altering a numeric column in sql server?
This is on SQL Server 2008. I have several columns I want to convert from money and decimal to varchar, for example a column called item_amount.[详细]
2023-02-04 11:41 分类：问答How to ALTER multiple columns at once in SQL Server
I need to ALTER the data types of several columns in a table. For a single column, the following works fine:[详细]
2023-01-11 10:21 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Alter column, add default constraint
I havea table and one of the columns is \"Date\" of type datetime. We d开发者_开发百科ecided to add a default constraint to that column[详细]
2022-12-17 16:41 分类：问答
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