Replace Grammar::getConnectionCount with compileConnectionCount

Author: GromNaN

src/Illuminate/Database/Console/DatabaseInspectionCommand.php

@@ -43,7 +43,9 @@ protected function getConnectionName(ConnectionInterface $connection, $database)
      */
     protected function getConnectionCount(ConnectionInterface $connection)
     {
-        return $connection->getQueryGrammar()->getConnectionCount();
+        $query = $connection->getSchemaGrammar()->compileConnectionCount();
+
+        return $query ? $connection->scalar($query) : null;
     }
 
     /**

src/Illuminate/Database/Query/Grammars/Grammar.php

@@ -1568,9 +1568,9 @@ public function getBitwiseOperators()
     /**
      * Get the number of open connections for a database.
      *
-     * @return int|null
+     * @return string|null
      */
-    public function getConnectionCount(): ?int
+    public function compileConnectionCount()
     {
         return null;
     }

src/Illuminate/Database/Query/Grammars/MySqlGrammar.php

@@ -515,14 +515,8 @@ protected function wrapJsonBooleanSelector($value)
         return 'json_extract('.$field.$path.')';
     }
 
-    public function getConnectionCount(): ?int
+    public function compileConnectionCount()
     {
-        $result = $this->connection->selectOne('show status where variable_name = "threads_connected"');
-
-        if (! $result) {
-            return null;
-        }
-
-        return (int) $result['Value'];
+        return 'show status where variable_name = "threads_connected"';
     }
 }

src/Illuminate/Database/Query/Grammars/PostgresGrammar.php

@@ -763,14 +763,8 @@ public function substituteBindingsIntoRawSql($sql, $bindings)
         return $query;
     }
 
-    public function getConnectionCount(): ?int
+    public function compileConnectionCount()
     {
-        $result = $this->connection->selectOne('select count(*) as "Value" from pg_stat_activity');
-
-        if (! $result) {
-            return null;
-        }
-
-        return (int) $result['Value'];
+        return 'select count(*) as "Value" from pg_stat_activity';
     }
 }

src/Illuminate/Database/Query/Grammars/SqlServerGrammar.php

@@ -572,14 +572,8 @@ protected function wrapTableValuedFunction($table)
         return $table;
     }
 
-    public function getConnectionCount(): ?int
+    public function compileConnectionCount()
     {
-        $result = $this->connection->selectOne('select count(*) Value from sys.dm_exec_sessions where status = ?', ['running']);
-
-        if (! $result) {
-            return null;
-        }
-
-        return (int) $result['Value'];
+        return 'select count(*) Value from sys.dm_exec_sessions where status = "running"';
     }
 }