Question

I’m working with SQL Server 2000 and Java.

I am creating an application that, among other things, reads the metadata from the tables, recreates them at another server and carry the data.

One of the tables was created this way:

CREATE TABLE some_table (
    Date datetime NOT NULL,     
    Code int NOT NULL,
    SameCodeAgainWTF AS Code 
)

How do I detect that the “SameCodeAgainWTF” column is a computed column so I don’t try to insert values at it during the data migration phase?

I already got the DatabaseMetaData object from the connection. But I was unable to find a method that gives me that information.

...
DatabaseMetaData dbMetaData = connection.getMetaData();
...

Thanks in advance.

EDIT 1:

I want to know if there is a solution without running another query. If there is a way to get the information from the DatabaseMetaData or the ResultSetMetaData.

I know I can query the syscolumns but I want to avoid it.

SELECT 
    sysobjects.name AS TableName, 
    syscolumns.name AS ColumnName
FROM syscolumns
    INNER JOIN sysobjects
    ON syscolumns.id = sysobjects.id
    AND sysobjects.xtype = 'U' --User Tables
WHERE syscolumns.iscomputed = 1

From: Get List of Computed Columns in Database Table (SQL Server)

Answer 1

Query syscolumns which contains an iscomputed column.

SELECT o.name as TableName, c.name as ComputedColumnName
    FROM sysobjects o
        INNER JOIN syscolumns c
            ON o.id = c.id
                AND c.iscomputed = 1
    WHERE o.xtype = 'u'