Postgresql flatten column＆amp;显示所有信息

Question

我有一张表格如下：

conversation_thread |postid| postType | post_text
            AA11    |  1   | Question |'How many whiskers do cats have?'
            AA11    |  2   | Reply    |"I think on average six"
            AA11    |  3   | Reply    |"Cats definitely have more than 12 whiskers"
            BB11    |  4   | Question |"A cat’s tail is held high means?"
            BB11    |  5   | Reply    |"The cat is utterly frustrated"
            BB11    |  6   | Reply    |"An uber happy cat"

我需要按conversation_thread分组，然后展平行。我正在使用postgresql，因此以下查询有效：

select conversation_thread, array_agg(postid),
array_agg(post_text) as text, array_agg(title) as title from myTable
group by conversation_thread;

它输出为：

conversation_thread|postid |post_text
            AA11   |{1,2,3}|{"How many whiskers do cats have?","I think on (...)}
            BB11   |{4,5,6}|{"A cat’s tail is held high means?", "The cat is (...)}

我没有在post_text字段中获得完整的文本。 我如何获得整个文本而不是（...）