SELECT options refine results As we saw in the last article, the SQL SELECT statement has the widest variety of query options, which are used to control the way data is returned. These options ...

For comparison, the equivalent SQL query to return all of the students in CS 101 would be something like SELECT student.name FROM courses, enrollees, students WHERE course.name ="CS 101" That ...

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 ...

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 ...

I’ve created a script that monitors a table in a SQL Server database. I’m only interested in one column in the table: TimeStamp. If the maximum (newest) value in TimeStamp is more than 30 ...

Analyze database contents using basic, intermediate and advanced SQL statement syntax and usage. Demonstrate capability to query data from multiple tables using SQL JOINS. Create and modify database ...

This causes the output data to be sorted every time the PROC SQL view is submitted and might have a negative impact on performance. It is more efficient to add an ORDER BY clause to a SELECT statement ...

The EXECUTE statement sends dynamic, non-query DBMS-specific SQL statements to the DBMS. The CONNECTION TO component in the FROM clause of a PROC SQL SELECT statement retrieves data directly from a ...

Here's a look at different ways to query Hadoop via SQL, some of which are part of the latest edition of MapR's Hadoop distribution SQL: old and busted. Hadoop: new hotness. That’s the ...