PostgreSQL-For-Wordpress/postgresql-for-wordpress
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Fix row order in SHOW INDEX query

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The order of rows returned from SHOW INDEX is significant, and it is
used to determine the column order in multi-column indexes.  Update the
query to return rows in the expected order to avoid errors during
upgrade (e.g. in wp_term_taxonomy_term_id_taxonomy where the column
order is not alphabetical).

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
This commit is contained in:
Kevin Locke
2015-06-03 01:17:48 -06:00
parent 83e5074461
commit b4b346f694
1 changed files with 11 additions and 1 deletions
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12
pg4wp/driver_pgsql_install.php
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@ -79,6 +79,7 @@ WHERE '.$where : '').';';
$pattern = '/SHOW INDEX FROM\s+(\w+)/';
preg_match( $pattern, $sql, $matches);
$table = $matches[1];
// Note: Row order must be in column index position order
$sql = 'SELECT bc.relname AS "Table",
CASE WHEN i.indisunique THEN \'0\' ELSE \'1\' END AS "Non_unique",
CASE WHEN i.indisprimary THEN \'PRIMARY\' WHEN bc.relname LIKE \'%usermeta\' AND ic.relname = \'umeta_key\'
@ -91,7 +92,16 @@ WHERE bc.oid = i.indrelid
AND (i.indkey[0] = a.attnum OR i.indkey[1] = a.attnum OR i.indkey[2] = a.attnum OR i.indkey[3] = a.attnum OR i.indkey[4] = a.attnum OR i.indkey[5] = a.attnum OR i.indkey[6] = a.attnum OR i.indkey[7] = a.attnum)
AND a.attrelid = bc.oid
AND bc.relname = \''.$table.'\'
ORDER BY a.attname;';
ORDER BY "Key_name", CASE a.attnum
WHEN i.indkey[0] THEN 0
WHEN i.indkey[1] THEN 1
WHEN i.indkey[2] THEN 2
WHEN i.indkey[3] THEN 3
WHEN i.indkey[4] THEN 4
WHEN i.indkey[5] THEN 5
WHEN i.indkey[6] THEN 6
WHEN i.indkey[7] THEN 7
END;';
}
// SHOW TABLES emulation
elseif( preg_match('/SHOW\s+(FULL\s+)?TABLES\s+(?:LIKE\s+(.+)|WHERE\s+(.+))?/i', $sql, $matches))