CREATE function [dbo].[SplitString] ( @Input nvarchar(max), --input string to be separated @Separator nvarchar(max)=',', --a string that delimit the substrings in the input string @RemoveEmptyEntries bit=1 --the return value does not include array elements that contain an empty string )...
SQL does not consolidate duplicate groups generated for a GROUPING SETS list. For example, in GROUP BY ( (), CUBE (Country, Region) ), both elements return a row for the grand total and both rows will be listed in the results. GROUP BY () Specifies the empty group, which generates th...
SQL Server does not support function-based indexes so it is a bit complicated to improve the performance of the queries that include scalar-valued function in the WHERE clauses. However, we can create computed columns and create indexes for the computed columns. So that we can improve the per...
Change the BEFORE trigger definition so that the BEFORE trigger will not be fired when the delete rule of constraintconstraint-name1is executed, or change the body of the BEFORE trigger so that it does not modify a column that is part of the foreign key of constraintconstraint-name2nor modif...
CASE Statement when not null , else if Help Case statement with Between in Where Clause Case statement with Date Comparison CASE statement with substring CASE WHEN - Adding collate into it. Case WHEN and concatenate string CASE WHEN isnumeric(ColValue) THEN ... ELSE ... END CASE WHEN MIN,...
This list does not contain keywords specific to ODBC or keywords used by both the data source and ODBC. This list represents all the reserved keywords; interoperable applications should not use these words in object names.For a list of ODBC keywords, see Reserved Keywords in Appendix C: SQL ...
Use the ORDER BY clause to order the result set. The GROUP BY clause does not order the result set. NULL values: If a grouping column contains NULL values, all NULL values are considered equal, and they are collected into a single group. ...
@RemoveEmptyEntries bit=1--thereturnvalue does not include array elements that contain an empty string)RETURNS@TABLEtable([Id]intidentity(1,1),[Value]nvarchar(max))ASBEGIN--Declare thereturnvariable here declare @Index int,@Entrynvarchar(max)set @Index=charindex(@Separator,@Input)while(@Index>0...
in (substring) - Yes, see notes. - - - Supported for ("string value" in \<column>), but not for (\<column> in "string value"). + Yes - - No - - Yes - - No - * Yes - - No - / Yes - - No - StartsWith - Yes, see notes. - - - Supported for (StartsWith(...
Role reversal does not display in your query plan; when it occurs, it is transparent to the user. Hash bailout The term hash bailout is sometimes used to describe grace hash joins or recursive hash joins. Note Recursive hash joins or hash bailouts cause reduced performance in your server. ...