改进update生成的sql语句

Author: liu21st

src/db/Builder.php

@@ -134,10 +134,10 @@ protected function parseData(Query $query, $data = [], $fields = [], $bind = [],
                         $result[$item] = $val[1];
                         break;
                     case 'inc':
-                        $result[$item] = $this->parseKey($query, $val[1]) . '+' . $val[2];
+                        $result[$item] = $this->parseKey($query, $val[1]) . ' + ' . $val[2];
                         break;
                     case 'dec':
-                        $result[$item] = $this->parseKey($query, $val[1]) . '-' . $val[2];
+                        $result[$item] = $this->parseKey($query, $val[1]) . ' - ' . $val[2];
                         break;
                 }
             } elseif (is_scalar($val)) {
@@ -1105,14 +1105,14 @@ public function update(Query $query)
         }
 
         foreach ($data as $key => $val) {
-            $set[] = $key . '=' . $val;
+            $set[] = $key . ' = ' . $val;
         }
 
         return str_replace(
             ['%TABLE%', '%SET%', '%JOIN%', '%WHERE%', '%ORDER%', '%LIMIT%', '%LOCK%', '%COMMENT%'],
             [
                 $this->parseTable($query, $options['table']),
-                implode(',', $set),
+                implode(' , ', $set),
                 $this->parseJoin($query, $options['join']),
                 $this->parseWhere($query, $options['where']),
                 $this->parseOrder($query, $options['order']),