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Asked: 2026-06-15T19:00:59+00:00

I have created a table in sql server which holds names of tables in

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I have created a table in sql server which holds names of tables in the database and some other information. When I run this query

SELECT upper(TABLE_NAME) TABLE_NAME, ISNULL(syn_schema,'N') syn_schema, isnull(syn_data,'N') syn_data
FROM information_schema.tables 
left join sync_config on TABLE_NAME = TAB_NAME 
where table_type = 'BASE TABLE' 
ORDER BY TABLE_NAME

this returns data from the information_schema.tables but not from the sync_config tables. syn_schema and syn_data columns are in the sync_config table. To summarize, join is not working on both tables. I have tried by changing datatype of tab_name column in sync_config table to SYSNAME from VARCHAR.

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1 Answer

  1. Editorial Team

    Well, if the join is not working, that indicates that TABLE_NAME = TAB_NAME is never true. Check the table name fields to see if they really contain what you expect. Do they match exactly, including case (even though SQL is case-insensitive when referring to a table in a query, a string comparison of table names may* be case sensitive)?

    Beyond that, post the structure and sample data of your tables for more help.

    *Thanks Martin Smith.

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