Task Factory Advanced Aggregator Transform

Advanced Aggregator Transform

Transform Icon	Transform Description
	The Advanced Aggregator Transform is used to aggregate rows of data from an upstream based on grouping.

General Tab

Column Browser

Located on the left hand side, the Column Browser window shows you all the available columns, variables and connections that can be used as part of a derived column expression. Selecting each plus sign next to a group in the tree view expands that group of items. Any item from the column browser can be dragged into an expression in the column grid below.

Functions Browser

Located on the right hand side, the functions browser window lists all of the available functions that can be used in the Advanced Derived column (as well as any of the expressions based tasks). All functions are grouped into an appropriate group (e.g. Character, Data Cleansing) based on what the function either does or returns. For instance, the character function Left is listed under the Character group because it performs operations on a set of characters or a string. Selecting a function gives you a description, syntax overview, and examples on how to use the function. 

Available Functions List

For a list of all available functions, along with syntax, descriptions, and examples, see the Functions List articles.

Columns Grid

The Columns Grid (the bottom window) allows you to create expressions used for aggregation and variable expressions.

Column	Description
Name	The name of the column or expression.
Action	The action this column performs. Variable Expression - This option creates a reusable expression that can be used in the expression column of the current column or other columns in the grid. Add As New Column - This creates a new derived column based on the expression.
Expression	This is the expression used to perform the action from the action column.
Data Type	The data type for the current column.
Length	The length of the current column.
Precision	The precision of the current column.
Scale	The scale of the current column.
CodePage	The code page of the current column.
Group By	Determines whether the expression is used in the group by calculation.

Advanced Tab

Option	Description
On Truncation	Action to take when a truncation occurs.
On Error	Action to take when an error occurs.
Max Errors to Ignore	How any errors to ignore before failing component.
Max Warnings	Maximum number of warnings you want to show in the execution log when you have errors or data truncation.

Validate All Button

The Validate All button evaluates all of the expressions and checks if they have errors. An error or warning icon appears if there are any issues with the expressions.

Test Expression (Using Placeholder Values) Button

This button creates temporary values based on the data type and execute the expression that is currently selected in the grid.