Commit 60536239 authored by webchick's avatar webchick

#809698 follow-up by Damien Tournoud, Josh Waihi, chx: Add CONCAT() function...

#809698 follow-up by Damien Tournoud, Josh Waihi, chx: Add CONCAT() function to PostgreSQL since || isn't supported reliably across database systems.
parent 3cca50da
......@@ -109,18 +109,33 @@ function initializeDatabase() {
);
}
// Don't use {} around pg_proc table.
if (!db_query("SELECT COUNT(*) FROM pg_proc WHERE proname = 'concat'")->fetchField()) {
db_query('CREATE OR REPLACE FUNCTION "concat"(text, text) RETURNS text AS
\'SELECT $1 || $2;\'
LANGUAGE \'sql\''
);
}
db_query('CREATE OR REPLACE FUNCTION "substring_index"(text, text, integer) RETURNS text AS
\'SELECT array_to_string((string_to_array($1, $2)) [1:$3], $2);\'
LANGUAGE \'sql\''
);
// Using || to concatenate in Drupal is not recommeneded because there are
// database drivers for Drupal that do not support the syntax, however
// they do support CONCAT(item1, item2) which we can replicate in
// PostgreSQL. PostgreSQL requires the function to be defined for each
// different argument variation the function can handle.
db_query('CREATE OR REPLACE FUNCTION "concat"(anynonarray, anynonarray) RETURNS text AS
\'SELECT CAST($1 AS text) || CAST($2 AS text);\'
LANGUAGE \'sql\'
');
db_query('CREATE OR REPLACE FUNCTION "concat"(text, anynonarray) RETURNS text AS
\'SELECT $1 || CAST($2 AS text);\'
LANGUAGE \'sql\'
');
db_query('CREATE OR REPLACE FUNCTION "concat"(anynonarray, text) RETURNS text AS
\'SELECT CAST($1 AS text) || $2;\'
LANGUAGE \'sql\'
');
db_query('CREATE OR REPLACE FUNCTION "concat"(text, text) RETURNS text AS
\'SELECT $1 || $2;\'
LANGUAGE \'sql\'
');
$this->pass(st('PostgreSQL has initialized itself.'));
}
catch (Exception $e) {
......
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