Al Thabat Holding Office Boy Interview Questions and Answers

To convert rows to columns, use the PIVOT function in SQL.

• Identify the column that will become the new row headers.

• Use the PIVOT function to transform the data.

• Specify the values to be aggregated in the new columns.

• Example: SELECT * FROM table_name PIVOT (SUM(value_column) FOR row_header_column IN (column1, column2, column3))

• Example: Use the UNPIVOT function to convert columns to rows.

A stage in IBM InfoSphere DataStage used to generate rows based on specified criteria.

• Used to create new rows in a data set based on certain conditions

• Can be used to generate test data or to fill in missing data

• Can be configured to generate a specific number of rows or to continue generating rows until a certain condition is met

Pivot tables are used to create reports by summarizing and analyzing data.

• Select the data range that you want to analyze

• Go to the 'Insert' tab and click on 'PivotTable'

• Choose the location where you want to place the pivot table

• Drag and drop the fields you want to analyze into the 'Rows' and 'Columns' areas

• Add any additional fields to the 'Values' area to calculate summaries

• Customize the pivot table by applying filters,...read more

Data validation ensures accuracy and completeness of data. It helps in preventing errors and improving data quality.

• Data validation ensures that the data entered is accurate and complete.

• It helps in preventing errors and improving data quality.

• It ensures that the data is consistent and conforms to predefined standards.

• It helps in identifying and correcting errors before they cause problems.

• Examples of data validation i...read more

Advance filter is a feature that allows users to apply complex criteria to filter data in a more precise way.

• Advance filter allows users to filter data based on multiple criteria.

• It provides options to filter data using logical operators such as AND, OR, and NOT.

• Users can filter data based on specific values, text, dates, or even formulas.

• Advance filter can be used in various applications like spreadsheets, databases, ...read more