T-SQL：从基于字符串的 SELECT 语句中排除列

Question

My overall goal is to create new tables by selecting columns in existing tables with certain patterns/tags in their column names. This is in SQL Server.

For example, I have a common need to get all contact information out of a company table, and into its own contact table.

I haven't been able to find a programmatic approach in SQL to express excluding columns from a SELECT statement based on string.

When looking to options like the COL_NAME function, those require an ID arg, which kills that option for me.

Wishing there was something built in that could work like the following:

SELECT * 
FROM TABLE 
WHERE COL_NAME() LIKE 'FLAG%'

Any ideas? Open to anything! Thanks!!

Answer 1

One trick could be to firstly using the following code to get the column names you desire:

select * from information_schema.columns 
where table_name='tbl' and column_name like 'FLAG%'

Then concatenate them into a comma-delimited string and finally create a dynamic sql query using the created string as the column names.