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Where do we use left outer join?
A left outer join is a method of combining tables. The result includes unmatched rows from only the table that is specified before the LEFT OUTER JOIN clause. If you are joining two tables and want the result set to include unmatched rows from only one table, use a LEFT OUTER JOIN clause or a RIGHT OUTER JOIN clause.
What Outer apply does?
OUTER APPLY returns both rows that produce a result set, and rows that do not, with NULL values in the columns produced by the table-valued function. OUTER APPLY work as LEFT OUTER JOIN. Above both query produce same result.
What is the function of a left outer join example?
How does the apply clause work in Excel?
The APPLY clause acts like a JOIN without the ON clause comes in two flavors: CROSS and OUTER. The OUTER APPLY clause returns all the rows on the left side (Customers) whether they return any rows in the table-valued-function or not. The columns that the table-valued-function returns are null if no rows are returned.
How to use where clause in LEFT OUTER JOIN?
You could use this where clause: add the WO_BreakerRail.Date = @Date on the LEFT OUTER JOIN statement and not the WHERE: or you can add it to the WHERE: What you want is to filter your WO_BreakerRail to the desired date before LEFT JOINing it to indRailType.
When to use on clause or where clause in SQL?
When making OUTER JOINs (ANSI-89 or ANSI-92), filtration location matters because criteria specified in the ON clause is applied before the JOIN is made. Criteria against an OUTER JOINed table provided in the WHERE clause is applied after the JOIN is made. This can produce very different result sets.
How does outer apply work in SQL Server?
The second query simply uses a LEFT OUTER JOIN between the Department table and the Employee table. As expected, the query returns all rows from Department table, even for those rows for which there is no match in the Employee table. Even though the above two queries return the same information, the execution plan is a bit different.