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SQLite: INSERT only if price is different from last row


SQLite: INSERT only if price is different from last row

By : ED P
Date : November 22 2020, 10:33 AM
around this issue I have a SQLite simple table with 2 columns: , Ok, here's the SOLUTION:
The solution is with VIEW and TRIGGER:
code :
CREATE VIEW [BTC_BRL-VIEW] AS SELECT timestamp,last_price
FROM [BTC_BRL] order by rowid desc limit 1;
CREATE TRIGGER [BTC_BRL-TRIGGER] INSTEAD OF INSERT 
ON [BTC_BRL-VIEW]

WHEN new.last_price NOT IN (SELECT last_price FROM 
[BTC_BRL-VIEW])

BEGIN INSERT INTO [BTC_BRL] values(new.timestamp,new.last_price);
END;
INSERT INTO [BTC_BRL-VIEW] values(1419991328,925.47);


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SQLite how to use integer for storing price value

SQLite how to use integer for storing price value


By : richspursfan
Date : March 29 2020, 07:55 AM
like below fixes the issue It is actually quite simple when you see it.
I don't know what currency you are in, but assume US $.
remove amount from price then insert new price

remove amount from price then insert new price


By : Ritik Singh
Date : March 29 2020, 07:55 AM
around this issue You can update a row by setting the column equal to the current column value minus (or plus) another value
code :
UPDATE `table` SET `Balance` = `Balance`-5.00 WHERE `Username`='Kev' 
UPDATE `table` SET `Balance` = `Balance`-5.00 WHERE `Id`=1
Get the latest price SQLITE

Get the latest price SQLITE


By : Egor Vorozhtsov
Date : March 29 2020, 07:55 AM
help you fix your problem I have a table which contain _id, underSubheadId, wefDate, price. Whenever a product is created or price is edited an entry is made in this table also. What I want is if I enter a date, I get the latest price of all distinct UnderSubheadIds before the date (or on that date if no entry found) , This is a little tricky, but here is one way:
code :
select t.*
from t
where t.wefDate = (select max(t2.wefDate)
                   from t t2
                   where t2.underSubHeadId = t.underSubHeadId and
                         t2.wefdate <= '2016-11-20'
                  );
SQL-Calculate price for how long one used an item- monthly price, weekly price, and hourly price

SQL-Calculate price for how long one used an item- monthly price, weekly price, and hourly price


By : Nikolay Ugarov
Date : March 29 2020, 07:55 AM
like below fixes the issue let's say we are renting out a bike. There's a monthly($100), weekly($10), and hourly($1) price. If I used it for 1 month, 2 weeks, and 4 hours, the price would be $124. I have a while loop that will do the modulus to see if the hours is longer than monthly and weekly and add to the price and subtract the duration of the borrowed item.
code :
SET @months = @datediff / 720
SET @weeks = (@datediff % 720) / 168
SET @hours = (@datediff % 720) % 168
Calculate price and display on WooCommerce product single page under price (simple price, variable price)

Calculate price and display on WooCommerce product single page under price (simple price, variable price)


By : user3079045
Date : March 29 2020, 07:55 AM
will be helpful for those in need This code will display the value or content before Add to Cart button in woocommerce product page.
code :
        add_action( 'woocommerce_single_product_summary', 'show_emi', 20 );
      function show_emi() {
       global $product; 
       $id = $product->get_id();
        $product = wc_get_product( $id );
        $a=$product->get_price();
        $b  = 5.15464;
        $c = 100;
        $d = $a * $b;
        $total = $d/$c;
          echo $total;
      }
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