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- Query Instructions
-
-
- The Query program will allow you to produce a report based on
- your selection, sorting and formatting specifications. Upon
- entry, you will be presented with a data dictionary and string
- gadgets for entering your record selection criteria, sort
- sequence and output report format.
-
- The data dictionary presents you with a list of data names that
- can be used to display or print values contained in the database.
-
- The SELECT string gadget will allow you to specify some selection
- criteria to be used to determine which database entries will be
- included in you output display or report. For example,
-
- SELECT:
- (Author = "Smith" or "Jones") and Disk = "FF90"
-
- specifies that the database is to be searched for programs
- written by "Smith" or "Jones" that are also on disk "FF90".
- Remember that in order to enter data into a string gadget you
- must first position the pointer within the gadget and depress the
- left button on the mouse. Note that the Select parameters
- contain parentheses to prevent ambiguities. If there is a
- possibility that the key word or phrase you are looking for
- contains occurrences with both upper and lower case letters, you
- must check for both, e.g., "Smith" or "smith". Another method is
- to use the wild character, e.g., "?mith".
-
- The Sort string gadget will allow you to specify the sequence in
- which the selected records are to be displayed or printed. For
- example,
-
- SORT:
- Disk
-
- specifies that the selected database entries are to be sorted in
- Disk name sequence. Only one sort field may be entered.
-
- Note: To sort on Date and have the resulting list appear in year
- order, enter:
-
- cdate(Date)
-
- The REPORT string gadget will allow you to specify the format of
- the output display or report. For example,
-
- REPORT:
- Program, col 30, Version, col 40, Type
-
- specifies that the Program Name, Version and Type for the
- selected entries are to be displayed. Further, it is specified
- that Version is to be displayed beginning in column 30 and that
- Type is to be displayed in column 40. If the column parameters
- are omitted, the data items will be separated with one space in
- the output. The REPORT specification parameters may be very
- simple or very complex depending upon the skill of the user.
-
- Upon entering the Query program, you will find that the SELECT,
- SORT and REPORT string gadgets already contain some parameters.
- These parameters have been designed to provide a simple display
- of all the entries in the catalog. You may use these parameters
- simply by selecting the RUN gadget, or you may enter your own
- customized report specifications. To erase the content on the
- parameter string gadgets, first select the gadget and then
- depress Right AMIGA - X. To undo (cancel) the last editing
- change to the string, depress Right AMIGA - Q. The Report
- specification parameters can be classified as either describing
- "when to do it" or "what to do".
-
- When To Do It:
-
- page_top - specifies that subsequent functions are to be
- executed at the top each printed page or screen.
-
- page_bottom - specifies that subsequent functions are to
- the executed at the bottom of each printed page or
- screen.
-
- report_top - specifies that subsequent functions are to
- be executed only at the beginning of the output report.
-
- report_bottom - specifies that subsequent functions are
- to executed only at the end of the report.
-
- top(<data-name>) - specifies that subsequent functions
- are to be executed after there has been a change in the
- content of <data-name>. For example, top(Disk).
- Normally, the specified data-name will be the same as
- the sort sequence.
-
- bottom(<data-name>) - specifies that subsequent
- functions are to be executed before there is a change in
- the content of data-name. For example, bottom(Disk).
-
- detail - specifies that the subsequent functions are to
- be executed for each selected database entry.
-
- What To Do:
-
- print - specifies that all output is to be routed to the
- printer. Default values for tm, bm and bod are set to
- 4, 8, and 54 respectively.
-
- display - specifies that all output is to be routed to
- the screen. "Display" is the output default. Default
- values for tm, bm and bod are set to 0, 0, and 22
- respectively.
-
- tm nn - sets the top margin for the output display or
- report to the value specified by nn.
-
- bm nn - sets the bottom margin for the output display or
- report to the value specified by nn.
-
- bod nn - sets the body of the output display or report
- to the value specified by nn. The sum of tm, bm and bod
- must equal the desired page length.
-
- <data-name> - causes the specified data name to be
- printed or displayed. For example, "Remarks" is a
- data-name.
-
- "literal" - causes the specified literal to be printed
- or displayed. For example, "The result is:" is a
- literal.
-
- trim(<data-name>) - causes the specified data name to be
- printed or displayed after all trailing spaces have been
- eliminated. For
- example,
-
- "trim(Remarks)".
-
- total(<data-name>) - specifies that the summed value of
- <data-name> is to be printed or displayed. An numeric
- data item from the dictionary or a numeric literal must
- be substituted for <data-name>. For example, to print a
- count of the entries selected for the report enter:
-
- report_bottom total(1)
-
- cum(<data-name>) - same as total except that the
- accumulator is not reset after displaying the result.
- To consecutively number items appearing in the output
- report, enter:
-
- detail cum(1) "%999"
-
- spacer nn - causes nn spaces to be inserted between
- output data items. The default is 1.
-
- col nn - causes the next specified data item to be
- displayed or printed in the column specified by nn.
-
- skip n - causes n lines to be skipped before displaying
- or printing the next data item. If n is not provided, 1
- is assumed.
-
- pause - causes a pause in the output process until the
- space bar is depressed.
-
- eject - if "print" has been specified, this command
- causes the paper to be ejected to the top of the next
- page; otherwise, the screen will be cleared.
-
-
- EDITING MASKS
-
- Numeric Editing Masks may be used to cause predefined
- characters to be imbedded within displayed or printed
- numeric items. Numeric items are identified in the data
- dictionary with the character "n" following the data
- name. The masks must be constructed as an alphanumeric
- literal whose first character is "%". If the second
- character of the mask literal is other than a numeric
- character, that character will be placed in the next
- left most position before the resulting edited numeric
- value.
-
- Examples:
-
- Input Values Mask Output
-
- 01000 "%9,999" 1,000
-
- 25245 "%$99,999" $25,245
-
- -5643 "%$999,999" $-5,643
-
- Alphanumeric Editing Masks may be used to cause
- predefined characters to be imbedded within displayed or
- printed alphanumeric items. Alphanumeric items are
- identified in the data dictionary with the character "c"
- following the data name. The mask must be constructed
- as an alphanumeric literal whose first character is "%".
-
- Examples:
-
- Input Values Mask Output
-
- 123456789 "%@@@-@@-@@@@" 123-45-6789
-
- 102786 "%@@/@@/@@" 10/27/86
-
-
- Here is an example of a more complex query that print a disk
- label for the selected entries:
-
-
- SELECT:
- Program = "?"
-
- SORT:
- Disk
-
- REPORT:
- print tm 1 bod 4 bm 1 bottom(Disk) "JANE DOE COLLECTION" skip
- Disk "Size:" total(Size) "%99999" eject
-
- By using the BOTTOM command, only one label is printed for each
- unique Disk Name in your database. The name of the collection is
- printed on the top line and the disk name and size is printed on
- the second line.
-
- These parameters are set for 5/16 labels. For other sizes of
- labels, simply adjust the margin parameters.
-
-
- Rules:
-
- (1) The Select statement may contain these operators:
-
- = Equal to
- <> Unequal to
- < Less than
- > Greater than
- <= Less than or equal to
- >= Greater than or equal to
-
- (2) The field on the left side of the operator must be a
- data name from the dictionary.
-
- (3) The field on the right side of the operator may be
- either a data name or literal. Literals must be enclosed in
- double quotes.
-
- (4) In the case of equal and unequal, the data name on the
- left side of the operator is searched for any occurrences of the
- data specified on the right of the operator.
-
- (5) The length of the item to the right of the operator may
- not be greater than the length of the item to the left of the
- operator.
-
- (6) When used in a literal, the "?" is wild. For example,
- to select all records in the database enter:
-
- SELECT:
- Author = "?"
-
- (7) Commas may used to improve readability; otherwise, they
- serve no useful purpose.
-
- (8) All data names must be capitalized. All other commands
- must be in lower case.
-
- If your printer carriage is 80 columns in width, try setting your
- printer preferences for compressed mode in order to print reports
- that are greater than 80 characters in width.
-