I have talbe in sql sever 2005,I want to apply Unique key on Ename field, Primarykey on Eid field Please provide the steps to do this. ThanksReply Answers (1) Its showing error The transaction log for database is full Sql Queries ...
SQL Check is defined as a condition that can use the CHECK Constraint to check the data value being entered into a record. If the test returns false, the record violates the constraint and is not inserted into the table. The CHECK constraint is formed by using the keyword “CHECK” followe...
select owner, CONSTRAINT_NAME ,INDEX_NAME,CONSTRAINT_TYPE,Search_condition,R_CONSTRAINT_NAME R_NAME from all_constraints where CONSTRAINT_NAME='&1' How to check the Referential integrity constraints in the table SQL> select CONSTRAINT_NAME C_NAME,INDEX_NAME,CONSTRAINT_TYPE,Search_condition,R_CONSTR...
I am using a check constraint to a variable with a VARCHAR datatype. The check constraint should perform an action that it should accept only two letters, e.g. 'AB' or 'XY'. How do I create the check constraint? Here's how I would do it: CREATE TABLE twoletters ( code CHAR(...
CHECK(finish>0) ); Copy Because the constraint is applied outside of any individual column definition, you need to specify the name of the columns you want the constraint to apply to in parentheses. Any time you specify a constraint outside of the definition of a single column, it’s kno...
T-SQL GETDATE() ? ADD and SUBTRACT depending on the condition is CASE STATEMENT ADD COLUMN to variable table? Add prefix in data column Add Time in SQL HH:MM:SS to another HH:MM:SS Adding a column to a large (100 million rows) table with default constraint adding a extra column in...
How to change columns in a unique constraint Over time you may want to add or remove columns from a unique constraint. As with check constraints, you'll need to create a new constraint and drop the original. The process for doing this online has an extra step: ...
Select * from teacher; SQL Copy Selecting data from the student table and teacher table, respectively. Now, trying to delete the records of a student (Master table). Here, an attempt to delete a referenced parent row causes a foreign key constraint violation. Because the job of a foreign ...
Projects related to the issue. assigned_to integer n/a No foreign key to People The person who owns this issue. status varchar2 8 Yes check constraint The issue status. Automatically set to Open when new and set to Closed when actual resolution date entered. priority varchar...
Active Directory problem: Check if a user exists in C#? Active Directory User does not assign User logon name and User Principal Name AD LDS cannot ChangePassword, but it can SetPassword Add <?xml version="1.0" encoding="UTF-8" standalone="yes"?> to my xml response Add a Constraint ...