Gather all column names into a table

Question

I am working on a project whos purpose is to rename all table names and column names in the sql database from one language to another. I have gather all the local table names into a table ltbl_TableNames and want to add all the columns of these tables into a table called ltbl_TableColumns.

I also want every table column to have a link to their table name. For example, the table 'Sales' have a column named 'Sum'. The table 'Sales' has the ID '10000'. I want to add that ID in a column named 'TableName_ID' for linking purposes. Is this possible to do without a lot of hassle?

Disclaimer: I am thinking about the renaming process. I only want to gather the column names with link to their parent table name.

Thanks in advance for answers.

Answer 1

You may use sys.tables for getting list of table name in your database. Similarly for column name you may use information_schema.columns as this will give records with table name . From the above 2 records you can easily make you required result.

            ;WITH CTABLE AS 
        ( SELECT * FROM SYS.TABLES WHERE TYPE_DESC = 'USER_TABLE' )
        , COLUMNNAME AS 
        ( SELECT * FROM INFORMATION_SCHEMA.COLUMNS )
        SELECT * INTO NEWTABLE FROM 
        (SELECT CTABLE.NAME AS TABLENAME , COLUMNNAME.COLUMN_NAME, COLUMNNAME.COLUMN_NAME + '_' + CAST(CTABLE.OBJECT_ID AS VARCHAR(15)) AS NEW_COLUMNNAME   
        FROM CTABLE INNER JOIN COLUMNNAME ON CTABLE.NAME = COLUMNNAME.TABLE_NAME ) AS D 

You may try this for your result.