WebMay 24, 2012 · The FASTFIRSTROW tells the optimizer that it is important to have the first row returned as fast as possible, allowing the application to return results to the users faster. You can see the difference by comparing the actual execution plans produced by … Web0. Try this: Select Distinct Col1,Col2,Col3 + CHAR (13) + CHAR (10) Col3 From Table Order by Col1,Col2 Option (FAST 1) This should modify your execution plan. If it doesn't help could you post your plan for both this query and your original query (minus the Option line).
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WebMay 26, 2024 · 1 SELECT * FROM dbo.Users WHERE Reputation = @Reputation OPTION (OPTIMIZE FOR UNKNOWN); Then test it by building dynamic SQL like this: 1 2 3 4 5 6 DECLARE @StringToExec NVARCHAR(4000), @Parameters NVARCHAR(4000); SET @StringToExec = 'SELECT * FROM dbo.Users WHERE Reputation = @Reputation OPTION … WebBeware of problems with OPTION (FAST 1) wich exists in several places. Use Plan Guides to control this from the SQL side if needed. But the best is if you can get the AX developers to fix it on the application side. Parametersniffing is a big issue, especially if you have several companies in the same database, with uneven amounts of data. crystal for tooth pain
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WebOption (FAST 1) This is the optimized READ. Extended keyword must be used when using COLUMNS with Read. Columns [YYRBT] (REBID) Extended Read [F:YYRBT]YRBT1=PREBID This is the SQL query generated by the 4GL instruction above. The SQL query still has the ORDER BY which in most cases is time consuming and not necessary. WebFeb 11, 2024 · Whereas the query with the hint FAST 1 is the most efficient query. While the execution plan provides us this information, the reality can only be verified if check the query IO and TIME. We can check the query IO and TIME by enabling the statistics IO and TIME … WebFeb 10, 2016 · Option fast forces the query optimizer to not optimize the total runtime of the query, but the time it takes to fetch the first N rows. if you have 2 tables of 1 million rows you want to join, a standard query plan is a hashmap of one table (temp table of a million … dwb waypoint