select qurey explanation

hai experts,

i need the explanations of this select qurey becose i not able to understand to do my work........please reply me asap.......

reward will be avail....

SELECT * FROM TBTCP WHERE JOBNAME = P_0111 AND PROGNAME = 'ZKRM_GATECNT_122_SEND_PEND' AND

LISTIDENT <> 0

order by sdldate.

MOVE TBTCP-LISTIDENT TO LL.

ENDSELECT.

thanks in advance,

jai.m