Cannot insert duplicate key row in object with unique index the duplicate key...
Hello Experts ,one of our developer getting this error :Exception: com.microsoft.sqlserver.jdbc.SQLServerException: Cannot insert duplicate key row in object 'dbo.nsIdentity' with unique index...
View ArticleValidations before insert/update the data
Is there a way to check whether data exists in a table before I INSERT data into the table? I need to check whether the same data already exists. If it does exist then I need an error raised. If not,...
View Articlewhat is the advantage of giving null value to unique constrain
what is the advantage of giving null value to unique constraint ?
View ArticleUnusual Unique Constraint Issue
I have a table with three columns. First being the PK, second being a FK to another table and the third being a column with a Unique Constraint, nonclustered. When I inserted into this table, my insert...
View ArticleDefine UNIQUE Constraint on Composite Key
How would I be able to define a Unique constraint on a composite PK which consists of 6 different columns? I am having some trouble inserting data into this table because of a PK constraint. Since it's...
View Articleunique constraint with multiple null
i have a table with empid identity column and empcode varchar. i want to be able to allow muiltiple null on empcode and also mantian unique empcode
View Articlewhat is the advantage of giving null value to unique constrain
what is the advantage of giving null value to unique constraint ?
View ArticleUnusual Unique Constraint Issue
I have a table with three columns. First being the PK, second being a FK to another table and the third being a column with a Unique Constraint, nonclustered. When I inserted into this table, my insert...
View ArticleDefine UNIQUE Constraint on Composite Key
How would I be able to define a Unique constraint on a composite PK which consists of 6 different columns? I am having some trouble inserting data into this table because of a PK constraint. Since it's...
View Articleunique constraint with multiple null
i have a table with empid identity column and empcode varchar. i want to be able to allow muiltiple null on empcode and also mantian unique empcode
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