dnoeth questions

dnoeth answers

• how to find duplicate values using row_number and partition by
• How to extract rows based on column's sequence of occurences
• Teradata Alter Table Command to Modify existing column data type from varchar to char with same length
• Update a table recursively in Postgres
• Why is the query planner unable to transform a correlated subquery?
• How to create ot replace table
• Teradata how can I use count(distinct)?
• After casting numerical as varchar 0 digit disappears
• Qualify clause in Oracle
• Is there a way to make NULL behave like 0 (zero) or like an empty string in SQL?