Apama Documentation : Building and Using Dashboards : Dashboard Function Reference : Tabular Functions : Max Columns
Max Columns
Returns a table that includes a column reflecting the larger of two specified columns of a specified table, the larger of a specified value and a specified column, or the larger of two specified values.
Usage notes
*Case 1: Larger of two specified columns of a specified table. This is the case if First Column Name or Numeric Value and Second Column Name or Numeric Value both specify a column of Table.
*Case 2: Larger of a specified value and a specified column. This is the case if one of First Column Name or Numeric Value and Second Column Name or Numeric Value specifies a column of Table and the other specifies a numeric value.
*Case 3: Larger of two specified values. This is the case if First Column Name or Numeric Value and Second Column Name or Numeric Value both specify a numeric value.
In case 1, the nth cell in the returned column corresponds to the nth cell of the table specified by the argument Table. Each cell of the returned column contains the larger of the corresponding row's cell in First Column Name or Numeric Value and the cell in Second Column Name or Numeric Value.
In case 2, the nth cell in the returned column corresponds to the nth cell of the table specified by the argument Table. Each cell of the returned column contains the larger of the corresponding row's cell in the specified column and the specified numeric value.
In case 3, each cell of the returned column contains the larger of the two specified numeric values.
In the returned table, the column that reflects the larger value is preceded by copies of all the columns in Table.
Arguments
The function has the following arguments:
*Table: Table that contains the columns to be compared.
*First Column Name or Numeric Value: Text string specifying the first column to be compared, or numerical value to be compared.
*Second Column Name or Numeric Value: Text string specifying the second column to be compared, or numerical value to be compared.
*Result Column Name: Text string that specifies the name of the column containing the maximums. You must supply a value for this argument.
This function returns a table.
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