Ticket #50789: 50789.diff

src/wp-includes/wp-db.php

@@ -3309 +3309 @@
                 // Strip everything between parentheses except nested selects.
                 $query = preg_replace( '/\((?!\s*select)[^(]*?\)/is', '()', $query );
 
+                // SELECT FROM information_schema.* WHERE TABLE_NAME = 'wp_12345_foo'
+                if ( preg_match(
+                        '/^\s*'
+                                . 'SELECT.*?\s+FROM'
+                                . '\s+`?information_schema`?\.'
+                                . '.*\s+TABLE_NAME\s*=\s*["\']([\w-]+)["\']/is',
+                        $query,
+                        $maybe
+                ) ) {
+                        return $maybe[1];
+                }
+
                 // Quickly match most common queries.
                 if ( preg_match(
                         '/^\s*(?:'