Nick questions

Nick answers

• Postgresql cannot find file name specified in copy command
• concatenate additional text to string variable in pl/pgsql
• Update all rows with one SQL query
• Can you read first line from file with open(fname, 'a+')?
• How can I reference the path of a notebook in Databricks/what is %run doing?
• Tableau: COUNTD using IF statement
• Postgresql huge performance difference when using IN vs NOT IN
• Split one string with commas into columns
• Convert positive data into negetive data (entire column) in Postgres Server
• Count the number of instances of values across multiple dimensions in Tableau