CLEAR 


CREATE CURSOR EQUALORNOTEQUAL (AB C(10) NULL)
APPEND BLANK

SYS(3054,11)
Test()
INDEX ON DATETIME()		TAG T1
* OTHERS...
*INDEX ON DTOC(DATE())+AB	TAG T1
*INDEX ON SECONDS()		TAG T2

* WAIT CHANGE
DO WHILE KEYMATCH(DATETIME())
*DO WHILE KEYMATCH(SECONDS())
	DOEVENTS
ENDDO
TEST()

SYS(3054,0)

PROCEDURE test
SELECT * FROM EQUALORNOTEQUAL WHERE DATETIME()=DATETIME() INTO ARRAY RANDOM
*SELECT * FROM BYBYBUG WHERE SECONDS()=SECONDS() INTO ARRAY RANDOM
?? _tally

Comment: don't uses not deterministic values into a index key, VFP don't check this condition.