HDBIndex (Function)

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Name of the key
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HDBIndex (Function)

In french: HDBIndex

Available only with these kinds of connection

Opens an xBase index file. The index file(s) of an xBase data file opened with HDBOpen must be opened with HDBIndex to be used in WINDEV or WEBDEV. If the index files are not opened, they will not be updated when the file is written to.

Remark: there is no need to open the data file or the index files if the file was just created by HDBCreation.

Remark: From version 19, HFSQL is the new name of HyperFileSQL.

Example

HDBOpen("CUSTOMER", "CU", "C:\FILE\CUSTOMER.DBF")
HDBIndex("CUSTOMER", "C:\FILE\CUSTNAME.NTX", "CustName")
HDBIndex("CUSTOMER", "C:\FILE\CUSTPHONE.NTX", "Phone")

Syntax

<Result> = HDBIndex(<Logical name of xBase file> , <Full name of index file> , <Key name>)

<Result>: Boolean

True if the operation was performed,
False if a problem occurs. HError is used to identify the error.

<Logical name of xBase file>: Character string

Name given to the xBase file. This file was opened by HDBOpen.

<Full name of index file>: Character string

Access path to index file and full file name (with the extension)

<Key name>: Character string

Name of index key. This parameter is mandatory for the files in .NDX, .NTX and .IDX format (indeed, the name of the key does not appear in the file). It is useless and ignored for files in .MDX format (because the key name appears in the file).

Remarks

Name of the key

If the key is a calculated key (multiple), you must not specify all the items included the key, but any name that will be used in programming. For clarity, the name of the corresponding index file is often used.

Limitations

This function is not available when using a database via Remote Access.
This function is not available when using a stand-alone executable.

Component: wd270hf.dll