Question

在尝试执行以下给出的查询时，出现语法错误我需要更新表civicrm_address中的列值，并将其从abc_abc_drupal_civi_4_17数据库移至abc_drupal数据库

为了实现它，我在FROM附近收到语法错误，我得到的错误如下

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for
 the right syntax to use near 'FROM abc_abc_drupal_civi_4_17.civicrm_address,abc_drupal.civic' at line 3

我该如何解决？

UPDATE abc_drupal.civicrm_address 
SET abc_drupal.civicrm_address.state_province_id = abc_abc_drupal_civi_4_17.civicrm_address.state_province_id
FROM abc_abc_drupal_civi_4_17.civicrm_address,abc_drupal.civicrm_address
WHERE abc_drupal.civicrm_address.state_province_id IS NULL 
AND   abc_abc_drupal_civi_4_17.civicrm_address.state_province_id IS NOT NULL
AND   abc_abc_drupal_civi_4_17.civicrm_address.id = abc_drupal.civicrm_address.id  
AND   abc_abc_drupal_civi_4_17.civicrm_address.contact_id IS NOT NULL;

Answer 1

稍后您需要指定设置，如下所示：

   UPDATE TABLEA a 
   JOIN TABLEB b ON a.join_colA = b.join_colB  
   SET a.columnToUpdate = [something]



 UPDATE abc_drupal.civicrm_address 
    join abc_abc_drupal_civi_4_17.civicrm_address inner join abc_drupal.civicrm_address
    on abc_abc_drupal_civi_4_17.civicrm_address.id = abc_drupal.civicrm_address.id  
    SET abc_drupal.civicrm_address.state_province_id = abc_abc_drupal_civi_4_17.civicrm_address.state_province_id
where abc_drupal.civicrm_address.state_province_id IS NULL 
    AND  abc_abc_drupal_civi_4_17.civicrm_address.state_province_id IS NOT NULL
    AND  abc_abc_drupal_civi_4_17.civicrm_address.contact_id IS NOT NULL

Answer 2

MySQL将JOIN放在UPDATE子句中，而不是通过单独的FROM（FROM由SQL Server和Postgres使用）。

您所写的查询难以解读。我强烈建议您使用表别名，这样查询更容易编写和读取：

UPDATE abc_drupal.civicrm_address a JOIN
       abc_abc_drupal_civi_4_17.civicrm_address aa
       ON aa.id = a.id
    SET a.state_province_id = aa.state_province_id
WHERE a.state_province_id IS NULL 
      aa.state_province_id IS NOT NULL AND   
      aa.contact_id IS NOT NULL;

尝试在mysql中运行更新查询时出现语法错误

2 个答案: