SELECT
    i.ITEM_CODE AS ITEM,
    i.ITEM_NAME AS I_NAME,
    c.CL_NAME AS C_NAME,
    s.SIZE_NAME AS S_NAME
FROM
    ITEM i
JOIN
    COLOR_TBL c ON i.UPDATE_USER_NAME = c.UPDATE_USER_NAME
and i.USER_UPDATE_DATETIME = c.USER_UPDATE_DATETIME
JOIN
    SIZE_TBL s ON i.UPDATE_USER_NAME = s.UPDATE_USER_NAME
and i.USER_UPDATE_DATETIME = s.USER_UPDATE_DATETIME
WHERE
    i.STOCK_MANAGEMENT_TYPE = 1
ORDER BY
    i.ITEM_CODE ASC,
    c.CL_CODE ASC,
    s.SIZE_CODE ASC;