Bulk delete tickets using IDs from SQL Server

Deletes multiple tickets in bulk using IDs from a SQL Server database. This example demonstrates using the SOURCE clause with Tickets_BULK to read IDs from an external source for deletion.

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.

DELETE FROM Tickets_BULK 
SOURCE(
  'MSSQL' --ODBC or OLEDB
  ,'Data Source=localhost;Initial Catalog=Test;Integrated Security=true'
  ,'select 104897 as Id 
    UNION 
    select 104898 as Id'
)

Using OPENQUERY in SQL Server

SELECT * FROM OPENQUERY([LS_TO_ZENDESK_IN_GATEWAY], 'DELETE FROM Tickets_BULK 
SOURCE(
  ''MSSQL'' --ODBC or OLEDB
  ,''Data Source=localhost;Initial Catalog=Test;Integrated Security=true''
  ,''select 104897 as Id 
    UNION 
    select 104898 as Id''
)')

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_ZENDESK_IN_GATEWAY] syntax.

DECLARE @MyQuery NVARCHAR(MAX) = 'DELETE FROM Tickets_BULK 
SOURCE(
  ''MSSQL'' --ODBC or OLEDB
  ,''Data Source=localhost;Initial Catalog=Test;Integrated Security=true''
  ,''select 104897 as Id 
    UNION 
    select 104898 as Id''
)'
EXEC (@MyQuery) AT [LS_TO_ZENDESK_IN_GATEWAY]