Purpose
Retrieves the columns in the HASH BY clause for a specified input stream.
Syntax
tdr.GetHashByDef( streamno )
- streamno
- Parameter type: integer
The input stream number.
Return Value
A list of column names, which are the columns in the HASH BY clause.
Example: Get the Columns in the HASH BY Clause
Consider the following HASH BY clause for input stream 0:
HASH BY col1, col3
The following statement retrieves the columns in the HASH BY clause and prints them.
print( tdr.GetHashByDef( 0));
The output of the print statement is as follows:
$Num_Columns [1] 2 $ColumnNames [1] "col1" "col3"