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- "SELECT RECORDS BY NUMERIC AND DATE COMPARISON HELP"
-
- "NUMERIC RECORD SELECTION"
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- "When records are selected by numeric comparison, a data pertinent to"
- "the record is targeted to be compared to a test value. The comparitor"
- "and target may be keyboard entries, another data, or one of the two"
- "counters the program provides for each record. The purpose of record"
- "selection, whether numeric or alpha comparison is used, is to discon-"
- "tinue the processing of those records not adhering to the specified"
- "parameters; to exclude them from the current group."
-
- "In a datafile detailing products sold there is a segment containing"
- "the current price of the item. Its' number is three. To work with a"
- "group of records selling for a dollar or more we need to exclude the"
- "items whose price is $.99 or less. To do so, we use the select-numeric"
- "routine. Menus guide you through the setup of the EXCLUSIVE SORT you"
- "need to perform."
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- "First of all you will select the target of the OPERATION. If you have"
- "done previous exclusive sorts you may, until you use a counter field,"
- "sort the entire file and add the survivors (records passing your test)"
- "to the current group, ending up with a group of records that match one"
- "of multiple criterion."
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- "When you store the results of a calculation in a counter field you"
- "will lose the option of adding records to the group; new records would"
- "not have had their counters computed as the rest."
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- "Since we have done no previous record selects no option of target for"
- "our operation will be offered on the screen; it must be all records."
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- "Then select as the target of the SORT the data in number three: price."
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- "In this case our comparitor is the same for all records, though it"
- "needn't be. It is a keyboard entry of 1.00. So, the data in segment"
- "three in all records will be compared to the same value: 1."
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- "Finally we must choose a comparison mode. Use equal to/greater than."
- "We could also use .99 as comparitor and greater than as the process."
-
- "Before the datafile is read and processed the program re-displays your"
- "input and allows you to re-specify the sort parameters if you have"
- "made keying or logic errors."
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- "When you return to browse the records not passing your test will not"
- "be displayed. Nor will subsequent calculations, sorts, prints, finds"
- "or total/averages include the non-survivors. For all intents and pur-"
- "poses these records are not in the file until you press F11."
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- "TIME-SLICE RECORD SELECTION"
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- "To create a group of records having a date field that lies between two"
- "specified dates press F8 as if the target of your select were numeric."
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- "When you select the first target field as a date field the rest of the"
- "prompts associated with the select records numeric routine will be re-"
- "placed with prompts offering you the option of entering or specifying"
- "dates or date fields instead of numeric data/fields."
-
- "The time-slice is identified in two passes: 1. Select records having"
- "their dates in the target field on or after ( => ) the desired start"
- "date. 2. Select records having their dates in the desired field on"
- "or before the desired cutoff date."
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- "AFTER THE SORT:"
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- "After the select routine has completed it's work you will return to"
- "BROWSE. The records whose target date did not fall between the spec-"
- "ified dates will no longer appear on the screen, in printouts, nor"
- "will subsequent operations on the group affect the rejected records."
-
- "The data you used as the target of your sort will be displayed in the"
- "secondary screen area so you may visually confirm the results of the"
- "process. To remove it from the browse screen press F18, then three."
-
- "You may do as many record selects as necessary to define your group."
-
- "It may SEEM that another feature this program could offer would be to"
- "perform multiple selects simultaneously. In fact, you would be LOSING"
- "a very important feature UNIQUE to the DATAMAGE by doing so: You have"
- "an opportunity to see the affect of each and every operation done."