Query Window

Query Window: Columns Tab

This tab allows you to specify the columns that you wish to see displayed in the Result Set. There are 2 kinds of column: columns that display the value of a field, and columns that display the value returned by a function. The list of possible fields (given the record type of the Query) are displayed in the Fields List on the left-hand side. Select one of these, and click the '>' button below it (or just double-click on it) to add the field to the Columns List (on the right-hand side). See below for more information.

Components of the Columns Tab - the Left-Hand Side

The Fields List	Displays all the possible fields (given the record type of the Query). Click on the expansion button (boxes with a '+' or '-' in them) to hide or show field ‘branches’ (sub- fields). Some fields are grouped into categories (represented by folder icons). Select a field in the Fields List and click on the button to the right of it to add it to the Columns List.
The Fields List Information Panel	This panel, which appears immediately below the Fields List, displays information about the item selected in the Fields List.
	Displays the Fields List Dropdown Menu - see below.

The Fields List Dropdown Menu

Show Linked Records	Show (or hide) linked records.
Show Qualifiers	Show (or hide) field qualifiers.

Components of the Columns Tab - the Right-Hand Side

The Columns List	The Columns List lists the columns that will appear in your Result Set when you run the query (except that you can have hidden columns - these are described in more detail below). The Columns List itself has four columns . These are: Heading Expression Sort Hidden You can resize columns in the Column List by clicking on the line between the column headings, and dragging left or right.
Heading	This is the text that will appear as a column heading in the Result Set when you run the query, or in your printed report, if you print it. If you add an entry to the list by inserting from the Fields List on the left-hand side of the window, a default Heading will be supplied, as well as an Expression. You will almost certainly want to change the default heading, to make it more meaningful. You may also want to edit the expression.
Expression	The Expression represents the data that you wish to appear in the result set column. There are 2 kinds of expressions that can be used: Data References - which identify fields. Functions - which compute values You can write your own data references if you want to, but its far easier to let Family Historian do it for you. Simply select the field you want from the Fields List on the left- hand side of the window, and click '>' to insert it as a column. Advanced and technically-minded users may wish to look at Understanding Data References for more information on Data References. If you wish to use Functions, it is usually easiest to find a sample query that uses the function you want, and copy the relevant expression from that query. Tip A quick way to copy text is to select it and press Ctrl-C. Ctrl-V can then be used to paste it where you want it. These key-combinations work in the vast majority of windows and dialog boxes in Windows. Advanced and technically-minded users who wish to understand more about how to use functions, should see Understanding Functions for more information.
Sort	You can sort on as many columns as you wish - either ascending or descending. See next paragraph for more information.
Type	The possible column types are: Normal Hidden Buddy Hidden columns do not appear in the Result Set, or in printed reports. You rarely need to make columns hidden, but it is occasionally useful, as a way of getting the exact kind of sort you want. Family Historian will always apply sorts in column order precedence, from left-to-right. If you need to create a query in which the order of precedence of sorts, does not match the display order of the result set columns, you can do it by making all the sort columns hidden, and ordering them however you like. Then add all the visible columns you need, in the display order you want, including duplicate columns (i.e. duplicates of a hidden column) where necessary. Buddy columns are also hidden and also do not appear in the Result Set, or in printed reports. They are used as a means to associate a cell with a data item (to make it 'data-linked') so that if the user double-clicks on the cell, or right-clicks on it to view a context menu, he or she will be able to view the underlying data item in the Property Box. Buddy columns provide the data-linking for the immediately preceding column in the query. In order for a buddy column to have any effect, it must contain a data-reference or an expression which returns a reference to a data item. It must have an immediately preceding column, and that column must not itself be hidden or a buddy column, and it must not contain a data-reference or an expression which returns a reference to a data item. See the "Individual Timeline" query for an example of a query that uses a buddy column. A Normal column is any column that isn't either hidden or a buddy column.
	Deletes the currently selected row(s) in the Columns List.
	For re-ordering rows in the column list. Moves the selected row up one.
	For re-ordering rows in the column list. Moves the selected row down one.
Add	Click on this button to add a new entry to the list (i.e. to add a new column to the result set), using the values supplied in the 4 boxes (heading, expression, sort and hidden). The new entry will be added to the bottom of the list, but you can re-order the list if you wish to using the arrow buttons. If the data in the 'expression' field is not a valid expression (i.e. a data reference or a function), the 'Add' will fail.
Update	Click on this button to update the selected entry in the list with the current values in the 'heading', 'expression', 'sort' and 'hidden' fields. If the data in the 'expression' field is not a valid expression (i.e. a data reference or a function), the 'Update' will fail.