PostgreSQL-For-Wordpress/postgresql-for-wordpress
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remove the field function because it's already accounted for in the rewriter

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Matthew Bucci
2023-11-10 11:24:49 -08:00
parent 402d9cbb73
commit 3d164e15a6
1 changed files with 0 additions and 39 deletions
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39
pg4wp/driver_pgsql.php
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@ -103,49 +103,10 @@ function wpsqli_real_connect(&$connection, $hostname = null, $username = null, $
$dbname = defined('DB_NAME') && DB_NAME ? DB_NAME : $database;
$pg_connstr = $GLOBALS['pg4wp_connstr'] . ' dbname=' . $database;
$GLOBALS['pg4wp_conn'] = $connection = pg_connect($pg_connstr);
pg4wp_create_field_function($connection);
return $connection;
}
/**
* SQL query to create or replace a PostgreSQL function named "field"
* which imitates MySQL's FIELD() function behavior.
*
* - ROW_NUMBER() is a window function in Postgres, used to assign a unique integer to rows.
* - unnest() is a Postgres function that takes an array and returns a set of rows.
*
* The function takes anyelement as the first parameter and anyarray as the second.
* It returns a BIGINT.
*
* SQL is used as the procedural language, and the function is marked as IMMUTABLE.
*/
function pg4wp_create_field_function($connection) {
$sql = <<<'SQL'
CREATE OR REPLACE FUNCTION field(anyelement, VARIADIC anyarray)
RETURNS BIGINT AS $$
SELECT rownum
FROM (
SELECT ROW_NUMBER() OVER () AS rownum, elem
FROM unnest($2) elem
) AS numbered
WHERE numbered.elem = $1
UNION ALL
SELECT 0
$$
LANGUAGE SQL IMMUTABLE;
SQL;
// Execute the SQL query
$result = pg_query($connection, $sql);
if ((PG4WP_DEBUG || PG4WP_LOG_ERRORS) && $result === false) {
$error = pg_last_error($connection);
error_log("[" . microtime(true) . "] Error creating MySQL-compatible field function: $error\n", 3, PG4WP_LOG . 'pg4wp_errors.log');
}
}
/**
* Database Operations
*/