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  • Sorting a view on several items
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Stored procedures
HSortView (Function)
In french: HTrieVue
ODBCNot available with this kind of connection
Warning
From version 20, the SQL views and the materialized views are available.
The views handled by this function correspond to the former mechanism of views. They do not correspond to SQL views or to materialized views.
Sorts a HFSQL view by creating an index on a view item.
Note: From version 19, HFSQL is the new name of HyperFileSQL.
Example
HSortView(ViewCustomer84, "City,Name")
Syntax
<Result> = HSortView([<View name> [, <Sort Item>]])
<Result>: Boolean
  • True if the view was sorted,
  • False otherwise. HError returns more details about the problem.
<View name>: Optional character string (with or without quotes)
Name of view used. If this name is not specified, HSortView handles the last view used by the last function for HFSQL management (starting with the letter H).
<Sort Item>: Optional character string (with quotes)
List of sort items found in the view. The items are separated by a comma or CR. The sort order can be specified by prefixing the string with "+" (ascending) or "-" (descending). By default, the sort is performed in ascending order ("+"). If this parameter is not specified, HSortView refers to the last item of the view used.
The possible format for this list are:
  • "[+/-]<1st item> [, [+/-]<2nd item> ]"
  • "[+/-]<1st Item> [CR [+/-]<2nd Item> ]"
The sort is performed according to the first sort item, then according to the second one, ... The following sort order is applied:: for an ascending sort, "a" < "u" < "é".
Hyper File 5.5 A single sort item must be specified in this parameter.
Remarks

Sort Item

An index can be created on any item of the view. If the item was a key item in the data file, the order relationship that was given to it in the analysis is used (sensitivity to the case, to the punctuation, etc.).
Reports and QueriesHFSQLHFSQL Client/Server

Sorting a view on several items

To sort a view on several items, you have the ability to display the view records in a memory Table control and to use TableSort.
Caution: This solution can only be used for the data files in HFSQL Classic or Client/Server format.
Component : wd240hf.dll
Minimum version required
  • Version 9
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