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Stored procedures
Returns the number of entries for a given key item. This number was calculated during the last statistical calculation.
Note: From version 19, HFSQL is the new name of HyperFileSQL.
Example
// Statistical calculation on CUSTNAME key of CUSTOMER file
ResStat = HStatNbRec(CUSTOMER, CUSTNAME)
Syntax
<Result> = HStatNbRec([<File name> [, <Name of key item>]])
<Result>: Integer
Number of entries found for the specified item.
Corresponds to the hInvalidRecNum constant if:
  • the statistics have never been calculated for the specified item.
  • the statistics are not supported by the specified type of item. HFSQL allows you to perform statistical calculations on key items only.
<File name>: Optional character string (with or without quotes)
Name of data file used. If this name is not specified, HStatNbRec handles the last data file used by the last function for HFSQL management (starting with the letter H).
<Name of key item>: Optional character string (with or without quotes)
Name of key item used to perform the statistical calculation. If this name is not specified, HStatNbRec handles the last item used by the last function for HFSQL management (starting with the letter H).
Remarks
  • The statistics can be updated by HIndex and HStatCalculate.
  • In the HFSQL Classic data files, the statistical calculations can only be performed on key items.
Component : wd240hf.dll
Minimum version required
  • Version 9
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