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This data type comes up when we design a column to store money amount. We’d like to have accuracy and avoid the funny famous issue in programming 0.1 + 0.2 !== 0.3.
The MySQL data type DECIMAL (with NUMERIC as its alias) is used for storing decimal numbers with fixed precision and scale. It is suitable for dealing with precise numeric values where accuracy is crucial, such as monetary amounts.
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The ON DUPLICATE KEY UPDATE statement in MySQL is used when you want to either insert a new row into a table or update the existing row if a duplicate key constraint is violated. In other words, it allows you to handle duplicates gracefully.
WooCommerce Payments, like any other payment service, uses webhook to notify relevant data to merchant sites. However, sometimes merchant sites can not receive these webhook events due to multiple issues. This can be a big issue if these events are related to disputes or payment status. One example is that merchants are not notified when disputes happen.
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