Does Bold BI have an equivalent of Tableau's ZN number function?

Yes, Bold BI has an equivalent function called IFNULL.

Details:

• Syntax:

  IFNULL(expression1, expression2)

• Functionality:
  This function returns expression1 if it is not null. Otherwise, it returns expression2.

Examples:

• For string columns with NULL values:

  IFNULL([ShipRegion], 'Region not specified')

  This will display 'Region not specified' when ShipRegion is NULL.

• For numeric columns with NULL values:

  IFNULL([ProductCount], 0)

  This will return 0 if ProductCount is NULL.