1. --FIND COLUMNS THAT ARE PRIMARY KEY AS WELL AS FOREIGN KEY - SQL SERVER 2008
  2. SELECT
  3.     CU.TABLE_NAME, CU.COLUMN_NAME
  4. FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE CU
  5. WHERE CU.CONSTRAINT_NAME IN (SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS
  6. WHERE CONSTRAINT_TYPE = 'PRIMARY KEY') AND
  7. COLUMN_NAME IN (SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
  8. WHERE TABLE_NAME = CU.TABLE_NAME AND
  9. COLUMN_NAME = CU.COLUMN_NAME AND
  10. CONSTRAINT_NAME IN (SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS
  11. WHERE CONSTRAINT_TYPE = 'FOREIGN KEY'))