1 Stroke is the No. 5 cause of death in the U.S., behind heart disease, cancer, chronic lower respiratory disease, and unintentional injuries. 2  About 130,000 Americans die every year from stroke. 3  Every year, 795,000 individuals have a stroke in the United States. 4  Someone in the U.S. dies every 4 minutes from stroke.
A cross join is used when you wish to create combination of every row from two tables. All row combinations are included in the result; this is commonly called cross product join. A common use for a cross join is to create obtain all combinations of items, such as colors and sizes. Note: The series starts with the article Introduction to Database Joins. All the examples for this lesson are based on Microsoft SQL Server Management Studio and the AdventureWorks2012 database.
When should I use an INNER -LOOP- JOIN instead of an INNER JOIN. LOOP | HASH | MERGE are Join hints Specifies that the join in the query should use looping, hashing, or merging. Using LOOP |HASH | MERGE JOIN enforces a particular join between two tables. LOOP cannot be specified together with RIGHT or FULL as a join type You should always use INNER JOIN. Let the query optimizer decided wether it wants to do a LOOP , MERGE or HASH join.