使用 SELECT INTO OUTFILE 时出现语法错误

发布于 2024-10-04 13:02:41 字数 598 浏览 2 评论 0原文

以下查询时

SELECT a,b,a+b INTO OUTFILE '/tmp/result.txt'
  FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
  LINES TERMINATED BY '\n'
  FROM test_table;

当我运行直接来自 MySQL 文档的，出现语法错误。我没有 test_table 表，并且我知道该语句实际上不起作用，但它似乎不应该给出语法错误。如果我直接从 MySQL 文档中得到语法错误，可能会发生什么情况？

这是我正在看的文档（5.1）： http://dev.mysql.com/doc/refman/5.1/en /select.html

这是我的 MySQL 版本：

mysql  Ver 14.14 Distrib 5.1.49, for debian-linux-gnu (i686) using readline 6.1

原文

When I run the following query

SELECT a,b,a+b INTO OUTFILE '/tmp/result.txt'
  FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
  LINES TERMINATED BY '\n'
  FROM test_table;

which is straight from the MySQL documentation, I get a syntax error. I don't have a test_table table and I understand that this statement won't actually work, but it doesn't seem like it should give a syntax error. If I'm getting a syntax error on something straight from the MySQL documentation, what could be going on?

This is the doc I'm looking at (5.1):
http://dev.mysql.com/doc/refman/5.1/en/select.html

This is my MySQL version:

mysql  Ver 14.14 Distrib 5.1.49, for debian-linux-gnu (i686) using readline 6.1

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晨敛清荷 2024-10-11 13:02:41

这段代码对我有用。

起初，我遇到了 Unknown table 'test_table' in my_db 错误。

创建表 CREATE TABLE test_table (a VARCHAR(255), b VARCHAR(255)) 后，它就正常工作了。没有语法错误。

编辑：

从官方 mysql 命令行客户端运行查询可以避免 GUI 客户端中潜在的错误，并提供更准确的错误消息。

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我不在是我 2024-10-11 13:02:41

也许您必须根据您使用的语言转义某些字符。

示例：

$sql = "SELECT a,b,a+b INTO OUTFILE '/tmp/result.txt'"
    . " FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '\"'"
    . " LINES TERMINATED BY '\\n'"
    . " FROM test_table;";

Maybe you have to escape some of the characters depending on the language you are using.

php example:

$sql = "SELECT a,b,a+b INTO OUTFILE '/tmp/result.txt'"
    . " FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '\"'"
    . " LINES TERMINATED BY '\\n'"
    . " FROM test_table;";

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~没有更多了~