Get list items with filter
Gets items from a list using a filter. This mimics a SharePoint view. Use HonorNonIndexedQueriesWarningMayFailRandomly in ExtraHeaders if filtering on non-indexed fields.
Standard SQL query example
This is the base query accepted by the connector. To execute it in SQL Server, you have to pass it to the Data Gateway via a Linked Server. See how to accomplish this using the examples below.
SELECT * FROM MyList
WITH(Filter='MyField eq ''Something'' ')
--In order to search on non-indexed fields set following value for ExtraHeaders property on connection UI
--Prefer: HonorNonIndexedQueriesWarningMayFailRandomly
Using OPENQUERY in SQL Server
SELECT * FROM OPENQUERY([LS_TO_SHAREPOINT_ONLINE_IN_GATEWAY], 'SELECT * FROM MyList
WITH(Filter=''MyField eq ''''Something'''' '')
--In order to search on non-indexed fields set following value for ExtraHeaders property on connection UI
--Prefer: HonorNonIndexedQueriesWarningMayFailRandomly')
Using EXEC in SQL Server (handling larger SQL text)
The major drawback of OPENQUERY is its inability to incorporate variables within SQL statements.
This often leads to the use of cumbersome dynamic SQL (with numerous ticks and escape characters).
Fortunately, starting with SQL 2005 and onwards, you can utilize the EXEC (your_sql) AT [LS_TO_SHAREPOINT_ONLINE_IN_GATEWAY] syntax.
DECLARE @MyQuery NVARCHAR(MAX) = 'SELECT * FROM MyList
WITH(Filter=''MyField eq ''''Something'''' '')
--In order to search on non-indexed fields set following value for ExtraHeaders property on connection UI
--Prefer: HonorNonIndexedQueriesWarningMayFailRandomly'
EXEC (@MyQuery) AT [LS_TO_SHAREPOINT_ONLINE_IN_GATEWAY]