Search for text and column names in SSMS query result grids, with matching cells highlighted. This feature searches data already returned by a query.
You can also search only in specific grid columns by preselecting a cell in each column you wish to search in.
Multiple cell selection is done with Ctrl + Left mouse click. Cells that contain found values are visibly colored.
To search stored data across tables and databases instead, use Search Databases, Tables, Views data.