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 ...

The indexes on a the tables of a large database make a huge difference in its performance and utility. Without an index, locating a single record in a large table can take several seconds; with the ...

Overview: Text-to-SQL simplifies queries but can misinterpret data structures and phrases.Ensuring up-to-date schema info and providing examples improves accura ...

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.

Knowing exactly what in-memory OLTP tables are used for will help you make the most of one of SQL Server's newest features. While in-memory online transaction processing (OLTP) tables may sound like a ...

This example uses DICTIONARY tables to show a list of the SAS files in a SAS data library. If you do not know the names of the columns in the DICTIONARY table that you are querying, use a DESCRIBE ...