日期查询表(1990/01/01:2041/12/31)

1. 客户在2010年1月31日典当物品
3. 
   日期主表中的日期(2010年1月31日),并将2010年2月28日放入适用利息中 pymt日期。2月28日被退回,因为2月31日不存在!如果2010年是闰年的话,那就是 会在2月29日回来。
4. 如果客户支付2个月,则返回2010年3月31日。3个月,4月30日。。。如果客户 支付超过3个月或日期查询表未涵盖的其他期间, 员工手动输入适用日期。

以下是日期查找表的外观:

{ Copyright 1990:2010, Frank Computer, Inc. }

{ DBDATE=YMD4- (correctly sorted for faster lookup) }

CREATE TABLE     datemast 
(
 dm_lookup       DATE,    {lookup col used for obtaining values below}
 dm_workday      CHAR(2), {NULL=Normal Working Date,}
                          {NW=National Holiday(Working Date),}
                          {NN=National Holiday(Non-Working Date),}
                          {NH=National Holiday(Half-Day Working Date),}
                          {CN=Company Proclamated(Non-Working Date),}
                          {CH=Company Proclamated(Half-Day Working Date)}

 {several other columns omitted}

 dm_description CHAR(30), {NULL, holiday description or any comments}
 dm_day_num     SMALLINT, {number of elapsed days since begining of year}
 dm_days_left   SMALLINT, (number of remaining days until end of year}

 dm_plus1_mth   DATE,     {plus 1 month from lookup date}
 dm_plus2_mth   DATE,     {plus 2 months from lookup date}
 dm_plus3_mth   DATE,     {plus 3 months from lookup date}
 dm_fy_begins   DATE,     {fiscal year begins on for lookup date}
 dm_fy_ends     DATE,     {fiscal year ends on for lookup date}
 dm_qtr_begins  DATE,     {quarter begins on for lookup date}
 dm_qtr_ends    DATE,     {quarter ends on for lookup date}
 dm_mth_begins  DATE,     {month begins on for lookup date}
 dm_mth_ends    DATE,     {month ends on for lookup date}
 dm_wk_begins   DATE,     {week begins on for lookup date}
 dm_wk_ends     DATE,     {week ends on for lookup date}

 {several other columns omitted}
)
IN "S:\PAWNSHOP.DBS\DATEMAST";