GROUP_CONCAT 逗号分隔符 - MySQL

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时间:2020-08-31 21:16:40  来源:igfitidea点击:

GROUP_CONCAT comma separator - MySQL

mysqlgroup-concatseparator

提问by user984580

I have a query where I am using GROUP_CONCATand a custom separator as my results may contain commas: '----'

我有一个我正在使用的查询GROUP_CONCAT和一个自定义分隔符,因为我的结果可能包含逗号:'----'

This all works well, however it is still comma separated, so my output is:

这一切都很好,但它仍然是逗号分隔的,所以我的输出是:

Result A----,Result B----,Result C----

How can I make it so the output is:

我怎样才能做到这一点,所以输出是:

Result A----Result B----Result C----

I thought this was the idea of a custom separator!

我以为这是自定义分隔符的想法!

Failing that, can you escape commas in your results, so I can explode in PHP by the GROUP_CONCATcommas?

如果做不到这一点,您能否在结果中转义逗号,以便我可以在 PHP 中通过GROUP_CONCAT逗号爆炸?

回答by Joe Stefanelli

Looks like you're missing the SEPARATOR keyword in the GROUP_CONCATfunction.

看起来您在GROUP_CONCAT函数中缺少 SEPARATOR 关键字。

GROUP_CONCAT(artists.artistname SEPARATOR '----')

The way you've written it, you're concatenating artists.artistnamewith the '----'string using the default comma separator.

你写它的方式,你串联artists.artistname'----'使用默认的逗号分隔符的字符串。

回答by Vallabh Bothre

Query to achieve your requirment

查询以达到您的要求

SELECT id,GROUP_CONCAT(text SEPARATOR ' ') AS text FROM table_name group by id;

回答by Roman

Or, if you are doing a split - join:

或者,如果您正在进行拆分 - 加入:

GROUP_CONCAT(split(thing, " "), '----') AS thing_name,

You may want to inclue WITHIN RECORD, like this:

你可能想包括WITHIN RECORD,像这样:

GROUP_CONCAT(split(thing, " "), '----') WITHIN RECORD AS thing_name,

from BigQuery API page

来自BigQuery API 页面