Rigerta questions

Rigerta answers

• LEFT JOIN with subquery and accessing main table columns in select clause
• SQL to return seconds difference between two rows
• And OR in same column in sql server
• How to check a condition against all the columns of a table?
• Dynamic tSQL Query from parameter
• How to check are there JSON Functions by SQL query?
• Checking variable for NULL kills performance
• Column has a data type that cannot participate in a columnstore index
• Date functions in temporal tables