SQL and MSBI Developer Interview Questions and Answers

Use SQL queries to filter data based on a particular column value and export to separate files.

• Use SELECT statement with WHERE clause to filter data based on the particular column value

• Use INSERT INTO statement to insert the filtered data into separate tables or files

• Consider using a loop or cursor to iterate through the data and export to multiple files

You can delete data without a primary key by using a combination of columns to identify and remove duplicate records.

• Identify unique combination of columns to differentiate between duplicate records

• Use the identified columns in a DELETE statement to remove duplicate records

• Consider using temporary tables or CTEs to handle the deletion process efficiently

To access multiple data files in the same directory, use a wildcard character (*) in the file path.

• Use a wildcard character (*) in the file path to access all files in the directory.

• For example, to access all CSV files in a directory, use 'SELECT * FROM folder_path/*.csv'.

• Make sure the SQL query or MSBI package is configured to handle multiple files.

SSIS is a tool provided by Microsoft for data integration and workflow applications.

• SSIS (SQL Server Integration Services) is a component of SQL Server used for building data integration and workflow applications.

• It allows users to create packages to extract, transform, and load data from various sources into SQL Server databases.

• SSIS can be used for tasks such as data migration, data warehousing, and ETL (Extract, Transform, Load) processes.

• It provides a graphical interface ...read more

MSBI stands for Microsoft Business Intelligence. It is a suite of tools used for data integration, analysis, and reporting.

• MSBI includes tools like SQL Server Integration Services (SSIS) for data integration, SQL Server Analysis Services (SSAS) for data analysis, and SQL Server Reporting Services (SSRS) for reporting.

• SSIS is used for ETL (Extract, Transform, Load) processes to move data between systems.

• SSAS is used for creating and managing multidimensional data models for an...read more

Truncate is a DDL command that removes all rows from a table, while delete is a DML command that removes specific rows.

• Truncate is faster than delete as it does not log individual row deletions.

• Truncate resets identity columns, while delete does not.

• Truncate cannot be rolled back, while delete can be rolled back using a transaction.

• Truncate does not fire triggers, while delete does.

• Truncate is used to quickly remove all rows from a table, while delete is used to remove specif...read more