SQL Async Multiple Queries Combine Results — Maximum Results (Top XYZ)

Question

I have a search function set up, where I run multiple queries simultaneously. The top 1000 results of each query are written to a table. (These run async--I am just leaving out

Answer 1

The following will likely give you a plan that achieves your desired result of not processing any rows after the 1,000th one has been found.

WITH CTE
     AS (SELECT Text
         FROM   A
         WHERE  CONTAINS(Text, '"searchString"')
         UNION ALL
         SELECT Text
         FROM   B
         WHERE  CONTAINS(Text, '"searchString"')
         UNION ALL
         SELECT Text
         FROM   C
         WHERE  CONTAINS(Text, '"searchString"'))
INSERT INTO Results
SELECT TOP 1000 Text
FROM   CTE