selectwithin
CONDITION
The selectwithin statement uses a Boolean formula to exclude records from a previously selected group.
Parameters
This statement has one parameter:
condition – is a Boolean formula (a formula with a true/false result).
Description
This statement uses a Boolean formula to exclude records from a previously selected group. Records in the database that have already been selected will be checked to see if they should still be selected, while all previously unselected records will remain invisible.
This example selects all records for Hawaii and then narrows that group down to records in Lahaina only.
select State = "HI"
selectwithin City = "Lahaina"
Of course there is no reason to use separate statements like this, normally you would combine these into a single statement:
select State = "HI" and City = "Lahaina"
However, selectwithin is useful when you don’t know all the criteria in advance, but want to incrementally refine the selection.
Note: If no records match the Boolean formula, all records will be selected (you can use the safeselectwithin statement if you don’t want this to happen). Panorama doesn’t allow the entire database to be invisible. See Handling Empty Selections in Code to learn about how to handle failed selections in your code.
See Also
- checkemptyselection -- notifies the user if a selection failed, and reverts to the previous selection.
- Date Search Options -- searching dates within a database.
- Favorite Searches -- saving and recalling favorite searches.
- find -- locates the first visible record in the active database for which the specified condition is true.
- Find & Replace Dialog -- finding and replacing a word or phrase (with an option to use a regular expression).
- Find/Select Dialog -- using a dialog to search for specific data.
- findabove -- locates the next previous record (above the current record) in the active database for which the specified condition is true.
- findbackwards -- locates the last visible record in the active database for which the specified condition is true.
- findbelow -- locates the next visible record (below the current record) in the active database for which the specified condition is true.
- findid -- locates a record in the active database by its ID number (see info("serverrecordid").
- findnth -- finds the nth (2nd, 3rd, 4th, etc.) record that matches a true-false test.
- findselect -- opens the standard *Find/Select* dialog.
- findselectdialog -- opens the standard *Find/Select* dialog.
- Formula Search -- searching with a formula.
- Handling Empty Selections in Code -- dealing with an empty selection data set.
- ifselect -- combines the select and if info("empty") operations into a single statement.
- info("empty") -- returns true or false depending on the result of the last select operation. If no records were selected the function will return true, otherwise it will return false.
- info("found") -- returns true or false depending on whether the last *find* or *next* statement was successful.
- info("selectduplicatesortwarning") -- works with the selectduplicatesnowarning statement to ascertain whether or not the database was sorted correctly when last search for duplicates was performed.
- nextmatch -- locates the next visible record in the active database for which the condition specified in the most recent Find statement is true.
- Numeric Search Options -- searching numbers within a database.
- pleaseselectall -- makes sure that all records are selected.
- previousmatch -- locates the previous (closer to the top) visible record in the active database for which the condition specified in the most recent Find statement is true.
- Record Search Options -- searching via record attributes.
- Refining a Selection -- selecting a subset or superset of a previous selection."
- removeselected -- deletes all selected records from the database.
- removeunselected -- deletes all unselected records from the database.
- safeselect -- makes visible only those records for the active database for which the specified condition is true. If no records match, the previous selection is retained.
- safeselectwithin -- makes visible only those previously selected records in the active database for which the specified condition is true. If no records match, the previous selection is retained.
- search( -- searches through an item of text looking for a character, word or phrase. If it finds an exact match (including upper/lower case) with the character, word or phrase, it returns its position within the text item. If it does not find the character, word or phrase, it returns zero.
- searchanycase( -- searches through an item of text looking for a character, word or phrase. If it finds a match (upper/lower case may be different) with the character, word or phrase, it returns its position within the text item. If it does not find the character, word or phrase, it returns zero.
- Searching -- searching a database to find or select information.
- select -- makes visible only those records for the active database for which the specified condition is true.
- Select Duplicates Dialog -- opens the standard *Select Duplicates* dialog sheet.
- selectadditional -- adds unselected records to a previously selected group if they match the true-false test.
- selectall -- makes every record in the database visible.
- selectduplicates -- selects records containing duplicate information in the database.
- selectduplicatesnowarning -- selects records containing duplicate information in the database.
- Selecting with the Context Menu -- searching for information related to the current cell.
- selectreverse -- makes every visible record invisible, and every invisible record visible.
- Text Search Options -- searching text within a database.
History
| 10.0 | Updated | Carried over from Panorama 6.0, but no longer displays a notification if the selection fails, even if this is the last statement in the procedure. |