default-constraint
how to remove default constraint from column in Db2
I had a table STUDENT_TB, which had column STUDENT_ID, NAME, AGE. I added a column with a f开发者_如何学编程ollowing command :-[详细]
2023-04-10 06:17 分类：问答Pass a NULL value to DateTime Field in LINQ
My database table is like this CREATE TABLE MYBUDGET.tbl_CurrentProperty ( [PropID]INTNOT NULLIDENTITY(1,1),[详细]
2023-02-05 14:07 分类：问答mysql "datetime NOT NULL DEFAULT '1970-01-01' " gets turned to 0000-00-00 00:00:00
I have a column created as `date_start` datetime NOT NULL DEFAULT \'1970-01-01\' However when I upload data from a CSV file with the LOAD DATA command with a blank entry for date_start the value sa[详细]
2023-01-15 21:50 分类：问答default a column with empty string
Is there a way, via a SQL statement, to ensure a column\'s default value is an empty string开发者_如何学JAVA \'\' instead of NULL?Yes - use a DEFAULT constraint:[详细]
2023-01-09 13:12 分类：问答Unable to set a URL as Default value in MySQL
I am using phpMYAdmin to set a URL as a Default Value to a Field of a Table in MySQL database, but of no luck.[详细]
2023-01-07 07:21 分类：问答How to add a default value to an already existing column?
I have an existing column in my SQL Server database. I have tried about everything I can think of but can not get a default value to be added to the column. What work开发者_Python百科s in every other[详细]
2023-01-03 22:42 分类：问答
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