что-то не помогает =(
при замене + на /**/ выдает:
Warning: mssql_query() [function.mssql-query]: message: Incorrect syntax near '/'. (severity 15)
Warning: mssql_query() [function.mssql-query]: Query failed
Warning: mssql_fetch_assoc(): supplied argument is not a valid MS SQL-result resource

При использовании max(table_name) начинает ругаться на from:
Warning: mssql_query() [function.mssql-query]: message: Incorrect syntax near 'from'. (severity 15)
Warning: mssql_query() [function.mssql-query]: Query failed
Warning: mssql_fetch_assoc(): supplied argument is not a valid MS SQL-result resource