fix: Any artisan command that drops tables erroring with unknown function: pg_total_relation_size() (#26)

* Override compileTables setting table size to 0

* Change default size to -1 to make it apparent that it is not supported

* Change all quotes to single

Co-authored-by: Peter Fox <[email protected]>

---------

Co-authored-by: Peter Fox <[email protected]>

Author: wsamoht

src/Schema/CockroachGrammar.php

@@ -9,6 +9,23 @@
 
 class CockroachGrammar extends PostgresGrammar
 {
+    /**
+     * Compile the query to determine the tables.
+     *
+     * CockroachDB doesn't yet support pg_total_relation_size()
+     * https://github.com/cockroachdb/cockroach/issues/20712
+     * https://github.com/cockroachdb/cockroach/pull/59604
+     *
+     * @return string
+     */
+    public function compileTables()
+    {
+        return 'select c.relname as name, n.nspname as schema, -1 as size, '
+            . 'obj_description(c.oid, \'pg_class\') as comment from pg_class c, pg_namespace n '
+            . 'where c.relkind = \'r\' and n.oid = c.relnamespace '
+            . 'order by c.relname';
+    }
+
     /**
      * Compile a fulltext index key command.
      *