NAME
sqlite3_overload_function —
Overload A
Function For A Virtual Table
SYNOPSIS
int
sqlite3_overload_function(
sqlite3*,
const char *zFuncName,
int nArg);
DESCRIPTION
Virtual tables can provide alternative implementations of functions using the
xFindFunction method of the virtual table module. But global versions of those
functions must exist in order to be overloaded.
This API makes sure a global version of a function with a particular name and
number of parameters exists. If no such function exists before this API is
called, a new function is created. The implementation of the new function
always causes an exception to be thrown. So the new function is not good for
anything by itself. Its only purpose is to be a placeholder function that can
be overloaded by a virtual table.
SEE ALSO
sqlite3_module(3)