Get all messages for a specified user

Returns messages for a specific user ID (mailbox). This is a row-by-row operation (one API call per message), so it can be slow; use only when you need messages for a different user. Use WITH (UserID='...'); LIMIT helps reduce rows.

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 Messages
LIMIT 10 -- fetches first 10 messages (fetching all can be very slow)
WITH (UserID='me')
--WITH (UserID='firstname.lastname@domainname.com')

Using OPENQUERY in SQL Server

SELECT * FROM OPENQUERY([LS_TO_GMAIL_IN_GATEWAY], 'SELECT * FROM Messages
LIMIT 10 -- fetches first 10 messages (fetching all can be very slow)
WITH (UserID=''me'')
--WITH (UserID=''firstname.lastname@domainname.com'')')

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_GMAIL_IN_GATEWAY] syntax.

DECLARE @MyQuery NVARCHAR(MAX) = 'SELECT * FROM Messages
LIMIT 10 -- fetches first 10 messages (fetching all can be very slow)
WITH (UserID=''me'')
--WITH (UserID=''firstname.lastname@domainname.com'')'
EXEC (@MyQuery) AT [LS_TO_GMAIL_IN_GATEWAY]