@UNQREADF[[u,]filename,"key",outputname[,length]] : Read a value from an existing key in a UnQLite database and save it to a file.
| u | Optional flag that the key is Unicode (UTF16) |
| filename | Database opened with @UNQOPEN |
| key | Key to read |
| outputname | Output file that will contain the value |
| length | Optional length (in bytes) to read. If not specified, @UNQREADF will read the entire file. |
Returns 0 if successful, or an error if not.
Example:
Open the database "test.db", read the key "btest", and save the value to the file "d:\temp\btest.value" :
set db=test.db
set key=btest
set result=%@unqopen[rwc,%db]
set result=%@unqreadf[%db,%key,"d:\temp\btest.value"]
