Access Query Language Overview

AQL uses TCL commands and displays the results either on terminals or printers. AQL operates on specified files and items based on various optional criteria, specifications, modifiers, limiters, and options.

FlashBASIC calls from dictionaries are used for complex data calculations and output formatting.

The use of B-tree indexes increases the speed and performance of AQL.

AQL sentences are entered at TCL and can be recalled, modified, or executed through utilization of the tcl-stack. AQL sentences may also be stored and invoked through macros, menus, Procs, and FlashBASIC (using the execute statement).

This general overview includes information on these topics:

AQL Sentence Form	Describes the structure of an AQL sentence.
AQL Command Categories	Categorizes the AQL commands by common functionality.
Default Attribute Items	Describes the default attribute items.
Default Output Specifications	Describes the default output specifications.
File Reference	Describes referencing files in AQL.
Item List	Describes the use of item lists in AQL.
Modifiers	Lists and describes the modifiers supported in AQL.
Options	Lists and describes the options supported in AQL.
Output Specifications	Describes the use of output specifications in AQL.
Print Limiters	Describes the use of print limiters in AQL.
Retrieval of Items from Files	Describes how items are retrieved from files.
Selection Criteria	Describes the use of selection criteria in AQL.
Sort Criteria	Describes the use of sort criteria in AQL.
Temporary Attribute Items	Describes the use of temporary attribute items in AQL.
Throwaway Connectives	Describes the use of throwaway connectives in AQL.