Army intensifying Stinger air missile training as part of new strategic initiatives; Army takes the lead in virtual health technology with opening of new Texas facility; Army task force fights Boko Haram, terrorism in Cameroon with youth outreach; Army builds sustaining military partnership with Saudi Arabia
This SQL tutorial explains how to use the SQL EXISTS condition with syntax and examples. Click the Try It button next to an example to test it for yourself in our SQL Editor. The SQL EXISTS condition is used in combination with a subquery and is considered to be met, if the subquery returns at least one row.
At this point, we need to define the term âwide tableâ. A wide table in SQL Server is a table that has defined a column set. Similarly, a non-wide table is a table that has no defined column set. Looking first at the ânon wideâ table, we see that the engine will prevent us from exceeding the limit of 1,024 columns. table ânon_wide_tableâ exceeds the maximum of 1024 columns.