如何从SQL中的日期参数中减去数字

Question

I wana pick Rate from a table for previous day. What I am doing is to to subtract 1 form date parameter but after executing this query I am getting an error "ORA-00932: inconsistent datatypes: expected DATE got NUMBER".Kindly guide me how to overcome this error. Thanks in advance. My Sample query is:

SELECT   CCY_RATE.MID_REVAL_RATE
  FROM   curr_currency_market_his CCY_RATE
 WHERE       CCY_RATE.CURR_ID = a.CCY_BOUGHT
         AND CCY_RATE.CURRENCY_MARKET = 1
         AND CCY_RATE.LEAD_COMPANY = 1
         AND CCY_RATE.BANKING_DATE  =:Report_date -1

Answer 1

You can try below query to get previous day:

SELECT   CCY_RATE.MID_REVAL_RATE
  FROM   curr_currency_market_his CCY_RATE
 WHERE       CCY_RATE.CURR_ID = a.CCY_BOUGHT
         AND CCY_RATE.CURRENCY_MARKET = 1
         AND CCY_RATE.LEAD_COMPANY = 1
         AND CCY_RATE.BANKING_DATE  =DATEADD(DD, DATEDIFF(DY, 0, :Report_date), -1);

Answer 2

Use DATE_SUB to remove time

SELECT CCY_RATE.MID_REVAL_RATE
FROM   curr_currency_market_his CCY_RATE
WHERE  CCY_RATE.CURR_ID = a.CCY_BOUGHT
     AND CCY_RATE.CURRENCY_MARKET = 1
     AND CCY_RATE.LEAD_COMPANY = 1
     AND CCY_RATE.BANKING_DATE  = DATE_SUB(:Report_date, INTERVAL 1 DAY)

Here you're saying that you want to remove '1 day' from your :Report_date .

Hope it helps.

Answer 3

Try this :

SELECT CCY_RATE.mid_reval_rate 
FROM   curr_currency_market_his CCY_RATE 
WHERE  CCY_RATE.curr_id = a.ccy_bought 
    AND CCY_RATE.currency_market = 1 
    AND CCY_RATE.lead_company = 1 
    AND Cast(CCY_RATE.banking_date AS DATE) >= Cast(report_date - 1 AS DATE) 

Answer 4

If you want to get this done through mysql, try this,

DATEDIFF(DAY,  DATEADD(day, -1, @CreatedDate), GETDATE())

If not working, then you can calculate the date through php and pass the actual date. To calculate the date through php try this :

date('Y-m-d', strtotime('-1 day', strtotime(report_date))));