find_query_plans_by_object.sql

/*
 * This function will return all plan_handles that include a reference to
 * a given object. This can help with targeted purges of execution plans.
 */


CREATE OR ALTER FUNCTION find_query_plans_by_object (
	@database SYSNAME,
	@schema SYSNAME,
	@table SYSNAME
) RETURNS TABLE
AS
RETURN
	WITH XMLNAMESPACES (
		default 'http://schemas.microsoft.com/sqlserver/2004/07/showplan'
	)
	SELECT
		query_stats.plan_handle
	FROM (
		SELECT DISTINCT plan_handle
		FROM sys.dm_exec_query_stats
	) query_stats
		CROSS APPLY sys.dm_exec_query_plan(query_stats.plan_handle) qp
	WHERE
		qp.query_plan.exist('//ColumnReference[
			(empty(sql:variable("@database")) or @Database eq sql:variable("@database") or @Database eq fn:concat("[", sql:variable("@database"), "]"))
			and (empty(sql:variable("@schema")) or @Schema eq sql:variable("@schema") or @Schema eq fn:concat("[", sql:variable("@schema"), "]"))
			and (empty(sql:variable("@table")) or @Table eq sql:variable("@table") or @Table eq fn:concat("[", sql:variable("@table"), "]"))
		]') = 1

Example usage:
SELECT *
FROM find_query_plans_by_object(NULL, 'dbo', 'tags')