mysql将多行查询结果插入表 [英] mysql insert multi row query result into table

问题描述

我遇到了一种情况，我需要使用从另一个查询中获得的数据来升级"表.我要添加缺失值，因此需要插入，但似乎无法正确处理.

I came across a scenario where I need to "upgrade" a table with data I obtain from another query. I am adding missing values so I will need to insert, but I cant seem to get it right.

目标表如下

CREATE TABLE `documentcounters` (
  `UID` int,
  `DataChar`,
  `SeqNum` ,
  `LastSignature`,
  `DocumentType`,
  `SalesTerminal`,
  `Active`,
  PRIMARY KEY (`UID`)
) ENGINE=InnoDB 

我正在尝试做

INSERT INTO documentcounters
SELECT Q1.in_headers, -1,NULL, 17,0,0 FROM 
    (SELECT DISTINCT(DocumentSeries) as in_headers  FROM transactionsheaders )AS Q1
    LEFT JOIN 
    (SELECT DISTINCT(DataChar) as in_counters FROM documentcounters)AS Q2
ON Q1.in_headers=Q2.in_counters WHERE Q2.in_counters IS NULL;

我遗漏了UID，因为我想创建插入语句，但是我得到了列数不匹配"的信息，这很有道理(该死！)

I left UID out because I want the insert statement to create it, but I get a "Column count doesn't match" which makes sense (darn!)

做类似的事情

INSERT INTO `documentcounters`
(`DataChar`,`SeqNum`,`LastSignature`,`DocumentType`,`SalesTerminal`,`Active`)
VALUES
(
(SELECT Q1.in_headers FROM 
    (SELECT DISTINCT(DocumentSeries) as in_headers  FROM transactionsheaders )AS Q1
    LEFT JOIN 
    (SELECT DISTINCT(DataChar) as in_counters FROM documentcounters)AS Q2
ON Q1.in_headers=Q2.in_counters WHERE Q2.in_counters IS NULL),-1,NULL,17,0,0
);

产生子查询返回多于1行"的错误.

yields a "Subquery returns more than 1 row" error.

有什么想法可以使我工作吗?

Any ideas how I can make this work?

欢呼

推荐答案

INSERT INTO `documentcounters`
(`DataChar`,`SeqNum`,`LastSignature`,`DocumentType`,`SalesTerminal`,`Active`)
SELECT Q1.in_headers, -1,NULL, 17,0,0 FROM 
    (SELECT DISTINCT(DocumentSeries) as in_headers  FROM transactionsheaders )AS Q1
    LEFT JOIN 
    (SELECT DISTINCT(DataChar) as in_counters FROM documentcounters)AS Q2
ON Q1.in_headers=Q2.in_counters WHERE Q2.in_counters IS NULL;

如果将UID定义为auto_increment，这将起作用.

This will work if UID is defined as auto_increment.

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