Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

Reindexing tables is an important part of good database housekeeping, because it reorganizes the indexes and restores speedy access. Microsoft's SQL Server has a handy command that rebuilds all ...

If your business uses relational databases to store data, it helps to use the SQL SELECT command with the INTO clause to create new tables from query results. This method isn't ANSI-standard SQL ...

SQL Server's OpenJson function will let you dismantle JSON structures into relational tables, including tables with foreign/primary key relationships. As I noted in an earlier column, JSON is great ...

SQL Server Enterprise offers “partitioning,” which allows you to split database tables into multiple partitions. If you have a table you’re constantly archiving into another table ...

And that's where SQL Server's In-Memory OLTP (online transaction processing) tables come in. In memory OLTP tables (I'll just call them memory-optimized tables from here on) were introduced in SQL ...

The DICTIONARY tables component is specified in the FROM clause of a SELECT statement. DICTIONARY is a reserved libref for use only in PROC SQL. Data from DICTIONARY tables are generated at run time.

Use SQL to quickly create a new table from existing records in Access Your email has been sent SQL lets you use one command to quickly create a new table containing a subset of records from a ...