ColumnCount - AWS Glue

ColumnCount

Checks the column count of the primary dataset against a given expression. In the expression, you can specify the number of columns or a range of columns using operators like > and <.

Syntax

ColumnCount <EXPRESSION>
  • EXPRESSION – An expression to run against the rule type response in order to produce a Boolean value. For more information, see Expressions.

Example: Column count numeric check

The following example rule checks whether the column count is within a given range.

ColumnCount between 10 and 20

Sample dynamic rules

  • ColumnCount >= avg(last(10))

  • ColumnCount between min(last(10))-1 and max(last(10))+1