SQL has become a powerful tool for data analysis and manipulation of data. The EOMONTH() function returns the last day of the month of a specified date. EOMONTH() can be used as a worksheet function (WS) in Excel. However, to get the last day of previous month in SQL can be achieved with the following SQL syntax …
Two step process to convert NULL to NOT NULL. We will assume that we have a column with a data type of VARCHAR and we are trying to convert it to allow NOT NULL Values. Step 1: Convert all values to NOT NULL UPDATE TableName SET ColumnName = ” WHERE ColumnName IS NULL Step 2: …
1. Python: To become a Data Engineer, you need to learn a programming language called Python. At no surprise, over 70% of data engineering job descriptions mention Python as a must have skill. Python libraries have helped improve data workflows and Python is easy to learn with simpler syntax as compared to Java OOP. 2. …