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  • Binary Memo item that is using HFSQL thumbnails
  • Managing memos in SQLite
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Stored procedures
Extracts the content of a binary memo item from an HFSQL data file, from a query or from an HFSQL view into a physical file (on disk).
Note: From version 19, HFSQL is the new name of HyperFileSQL.
Reports and Queries
HExtractMemo(Customer, Photo, "C:\temp\Photo.gif")
Reports and Queries
// Photo of product
IF HExtractMemo(SQLGetMemo("MyQuery", 2), "Product.BMP") = False THEN
RESULT False
END
Syntax

Extracting a memo Hide the details

<Result> = HExtractMemo(<Data file> , <Memo item> [, <Destination file>])
<Result>: Boolean
  • True if the operation was performed,
  • False if a problem occurred. HError is used to identify the error.
<Data file>: Character string (with or without quotes)
Name of data file (query of view) used. If this name is not specified, HExtractMemo handles the last data file used by the last function for HFSQL management (starting with the letter H).
<Memo item>: Character string (with or without quotes)
Name of the item containing the binary memo to extract.
<Destination file>: Optional character string (with quotes)
Path and full name of the file where the content of the item must be saved. If this parameter is not specified, the binary memo is saved in its initial path and file. The creation date and the date of last modification of this file are restored.
OLE DBNative Connectors (Native Accesses) This parameter is mandatory because the name of the source file is not saved in the OLE DB memos.
Reports and Queries

Extracting a memo (syntax for SQLGetMemo) Hide the details

<Result> = HExtractMemo(<Binary Memo> , <Destination file>)
<Result>: Boolean
  • True if the operation was performed,
  • False if a problem occurred. HError is used to identify the error.
<Binary Memo>: Character string (with or without quotes)
Binary memo returned by SQLGetMemo.
<Destination file>: Character string (with or without quotes)
Path and full name of the file where the content of the item must be saved.
OLE DBNative Connectors (Native Accesses) This parameter is mandatory because the name of the source file is not saved in the OLE DB memos.
Remarks
Reports and QueriesHFSQLHFSQL Client/Server

Binary Memo item that is using HFSQL thumbnails

To extract the content of an HFSQL thumbnail from an HFSQL item, use ..Thumbnail.
See HFSQL thumbnails for more details.
Native Connectors (Native Accesses)

Managing memos in SQLite

Storing information in memo format is recommended for the data whose size is less than 1 MB. We advise you to directly save the data in external file format on the internal or external memory of the phone and to store the access path to this data in the database.
Component : wd240hf.dll
Minimum version required
  • Version 9
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