On Friday, 10 January, 2020 11:44, Tim Streater <[email protected]> wrote:
>On 10 Jan 2020, at 18:03, Richard Hipp <[email protected]> wrote: >> On 1/10/20, Dominique Devienne <[email protected]> wrote: >>> There's no way at all, to know the length of a text column with >>> embedded NULLs? >> You can find the true length of a string in bytes from C-code using >> the sqlite3_column_bytes() interface. But I cannot, off-hand, think >> of a way to do that from SQL. >But if I store UTF-8 in a TEXT column, surely I'm allowed to include >NULLs in that? They are after all valid UTF-8 characters. No, they are not. The "NUL character" in Modified UTF-8 is the two-byte sequence 0xC0 0x80. This is specifically so that 0x00 can be used as a string terminator. Validly encoded UTF-8 encoded text stored in a C String (0x00 terminated sequence of bytes) must not contain an embedded 0x00 byte since that byte terminates the sequence. -- The fact that there's a Highway to Hell but only a Stairway to Heaven says a lot about anticipated traffic volume. _______________________________________________ sqlite-users mailing list [email protected] http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
