A SELECT statement quering all 500+ tables in a DB to return all field with a value 10345

I was wondering if it were possible to write a query that would return all field with value 10345 from all tables from the DB. The field 10345 is in column title systemassignid. I have wrote this code who select all the column with systemAssignID but i need narrow it the field = 10345 not the column.

--this code return only the column not the field = 10345.--

SELECT COLUMN_NAME, TABLE_NAME

FROM INFORMATION_SCHEMA.COLUMNS

WHERE COLUMN_NAME LIKE '%SystemAssignId%'

Thanks for any help.