sql query interview questions convert int to decimal and decimal to int #sqlinterviewquestions

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sql query interview questions convert int to decimal and decimal to int

To convert an integer to a decimal in SQL, use CAST or CONVERT functions, ensuring the target data type is decimal. This transformation is useful when precision or fractional values are needed. Conversely, to convert a decimal to an integer, truncation or rounding functions, like ROUND or CAST, are employed, eliminating decimal components. These conversions facilitate handling numeric data in different formats, allowing for flexibility and compatibility within SQL databases. Understanding these operations is crucial for managing diverse numerical data types in SQL queries effectively.

SQL interview question find the products and calculate the sum of sales of the last month
To determine the total sales for the last month, gather sales data for each product and sum the values. This involves adding up the individual sales figures for all products over the specified time period, providing a comprehensive overview of the total monthly sales.