Meaning of square brackets in MS SQL table designer Square brackets may be placed around objects e. Their primary purpose is, as Mark mentioned, to encapsulate the objects so that special characters such as a space or period do not interfere with your syntax. Many applications by default use the bracketed notation, to further reduce risk of syntax errors or anything of that sort. Been reading this site for answers for quite a while and now asking my first question Im using SQL Server I have two tables, ABC and ABCTemp. The contents are. A relational database management system uses SQL MERGE also called upsert statements to INSERT new records or UPDATE existing records depending on whether condition. Its typically good practice to not include any spaces. DatabaseName lt GOOD PRACTICE. Database Name lt GENERALLY TRY TO AVOID. SQLines provides tools and services to help you transfer data, convert database schema DDL, views, stored procedures, functions, triggers, queries and SQL scripts. SQL Quick Guide Learn SQL Structured Programming Language in simple and easy steps starting from basic to advanced concepts with examples including database. Microsoft SQL Server. Sqlservr. exe version 9. Install Iis On Windows 2008 64 Bit. Microsoft SQL Server 2005 Service Pack 2 issue Cleanup tasks run at different intervals than intended. Sorry to contradict Jonathon Hibbards comment http but my experiencie with INSERT INTO. ON DUPLICATE KEY UPDATE. In any case, if the latter is used, you may use square brackets i. Q6Ux10boc/V1pFeDv_G9I/AAAAAAAABhU/eSkP3mlErSQD3eC_GP_OAkUNCq9WMv2lwCKgB/s640/Screenshot%2Bfrom%2B2016-06-09%2B22-57-50.png' alt='Php Sql On Duplicate Key Update Ms Sql' title='Php Sql On Duplicate Key Update Ms Sql' />I have a question in regards to SQL Standard availability groups. I currently have an AG setup with one primary and one secondary replica. I am using synchronous. The shortest, fastest, and easiest way to compare two tables in SQL Server UNION When you have two tables or resultsets from SELECT statements that you wish to.