SELECT
    CH0101.SEIKY_NO,
    CH0101.SEIKY_YM,
    CH0101.SVC_KEI_NO,
    CH0101.PCRS_CD,
    CH0101.PRC_SVC_CD,
    CH0101.PRC_KMK_CD,
    TO_CHAR(CH0101.AMNT),
    CH0101.MK_FLG
FROM
    CH_T_SEIKY_UCWK CH0101
WHERE
    CH0101.SEIKY_YM = 'ZZZZZZ'
AND CH0101.AMNT > 0
AND CH0101.MK_FLG = '0'