On Fri, 2007-08-10 at 11:28 +0200, Jef Driesen wrote:
> When using sqlite3_bind_text() (or a similar function) with
> SQLITE_STATIC, how long does the pointer have to remain valid? As long
> as the sqlite3_stmt is not finalized?
Pretty much. It has to be valid during all subsequent calls to
sqlite3_step() on the statement handle. Or until you bind a
different value to the same parameter.
So the technique below is fine.
Dan.
>
> It is clear to me the following will cause no problem:
>
> sqlite3_bind_text (stmt, column, "some text", -1, SQLITE_STATIC);
>
> But what about this:
>
> void some_func (const char* text)
> {
> sqlite3_stmt *stmt = 0;
> sqlite3_prepare_v2 (db, sql, -1, &stmt, NULL);
> sqlite3_bind_text (stmt, column, text, -1, SQLITE_STATIC);
> sqlite3_step (stmt);
> ...
> sqlite3_finalize (stmt);
> }
>
> In this case the pointer remains unchanged as long as the statement is
> valid, but it can change afterwards. Is that a problem and should I use
> SQLITE_TRANSIENT here?
>
>
>
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