Don't forget this point about pragmas: https://www.sqlite.org/pragma.html "No error messages are generated if an unknown pragma is issued. Unknown pragmas are simply ignored. This means if there is a typo in a pragma statement the library does not inform the user of the fact."
That way if there's a typo, or if you try a new pragma in an old version then it won't complain, it just won't do anything. -----Original Message----- From: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On Behalf Of Bart Smissaert Sent: Wednesday, August 01, 2018 10:13 AM To: General Discussion of SQLite Database Subject: [sqlite] Is pragma index_list without supplied table name valid SQL? Using SQLite 3.22.0 In my app I have code to determine if a given SQL string is data-producing, non-data producing or invalid. It uses these 3 SQLite functions: sqlite3_prepare_v3 sqlite3_stmt_readonly sqlite3_column_count Have been using this code for a few years and sofar never failed, but now come across: pragma index_list so, without a supplied table name. This gives me data-producing and I think it should give me invalid. Firstly is this SQL indeed invalid? Secondly, if it is I need to add some code to pick this up and was thinking about using explain for that. Explain pragma index_list gives me: addr opcode p1 p2 p3 p4 p5 comment --------------------------------------------------- 0 Init 0 1 0 00 Start at 1 1 Halt 0 0 0 00 And that to me looks it is indeed an invalid SQL as it gives a Halt already in the second row and produces no further rows. Am I right here and would this be a good way to pick up invalid SQL? RBS _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
