On Thursday, 31 October, 2019 03:51, Thomas Kurz <sqlite.2...@t-net.ruhr> wrote:
>I experimentally imported the same data into a MariaDB database and tried >the same operation there (without paying attention to creating any >indexes, etc.). It takes only a few seconds there. According to the MariaDB reference manual, it does not "do anything" with references clauses on columns. They are merely for entertainment purposes. You have to use the table constraint syntax to declare enforceable foreign key constraints, which means you cannot use the same CREATE TABLE syntax for MariaDB as for SQLite3. From https://mariadb.com/kb/en/library/create-table/ Note: MariaDB accepts the REFERENCES clause in ALTER TABLE and CREATE TABLE column definitions, but that syntax does nothing. MariaDB simply parses it without returning any error or warning, for compatibility with other DBMS's. Before MariaDB 10.2.1 this was also true for CHECK constraints. Only the syntax for indexes described below creates foreign keys. -- 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 sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
