Improving Performance for Parsing UNION Clause in SQL Complete

In the previous article we told that we’ve performed a lot of work concerning optimization of parsing queries in SQL documents. Also we informed that we’ve fixed all problems that were found by users of our intellisense… But recently one user sent us quite a small script that caused freezing of SSMS by SQL Complete. Here it is:

SQL Complete: Parsing performance improved!

Recently we have released a free SQL Complete tool that provides IntelliSense and script layout for SQL Server. If you like IntelliSense in Visual Studio and write T-SQL, you’ll probably appreciate the productivity improvements with SQL Complete.