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改进query类的聚合查询方法的返回值

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thinkphp
2016-04-27 17:35:49 +08:00
parent 7599d76864
commit 006b45dd9a
1 changed files with 8 additions and 4 deletions
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12
library/think/db/Query.php
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@@ -179,7 +179,8 @@ class Query
*/ */
public function sum($field = '*') public function sum($field = '*')
{ {
return $this->value('SUM(' . $field . ') AS tp_sum'); $result = $this->value('SUM(' . $field . ') AS tp_sum');
return is_null($result) ? 0 : $result;
} }
/** /**
@@ -190,7 +191,8 @@ class Query
*/ */
public function min($field = '*') public function min($field = '*')
{ {
return $this->value('MIN(' . $field . ') AS tp_min'); $result = $this->value('MIN(' . $field . ') AS tp_min');
return is_null($result) ? 0 : $result;
} }
/** /**
@@ -201,7 +203,8 @@ class Query
*/ */
public function max($field = '*') public function max($field = '*')
{ {
return $this->value('MAX(' . $field . ') AS tp_max'); $result = $this->value('MAX(' . $field . ') AS tp_max');
return is_null($result) ? 0 : $result;
} }
/** /**
@@ -212,7 +215,8 @@ class Query
*/ */
public function avg($field = '*') public function avg($field = '*')
{ {
return $this->value('AVG(' . $field . ') AS tp_avg'); $result = $this->value('AVG(' . $field . ') AS tp_avg');
return is_null($result) ? 0 : $result;
} }
/** /**