SAP ABAP Table AQSTFIELD (Old Control: TFIELDS Structure) is used by

• Class (5)
• TTYP (1)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_QUERY_JOIN_CNTRL Method: CNVT_TABLES_TO_NEW	Join Control	SQUECNTRL	BASIS	SAP_BASIS
2	Class	CL_QUERY_JOIN_CNTRL Method: TEST_JOIN_VALIDITY	Join Control	SQUECNTRL	BASIS	SAP_BASIS
3	Class	CL_QUERY_JOIN_CNTRL Method: PROPOSE_ON_CONDITION	Join Control	SQUECNTRL	BASIS	SAP_BASIS
4	Class	CL_QUERY_JOIN_CNTRL Method: REMOVE_TOBJECT	Join Control	SQUECNTRL	BASIS	SAP_BASIS
5	Class	CL_QUERY_JOIN_CNTRL Method: ADD_TFIELD	Join Control	SQUECNTRL	BASIS	SAP_BASIS