Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
258 views
in Technique[技术] by (71.8m points)

postgresql - Remove array values in pgSQL

Is there a way to remove a value from an array in pgSQL? Or to be more precise, to pop the last value? Judging by this list the answer seems to be no. I can get the result I want with an additional index pointer, but it's a bit cumbersome.

question from:https://stackoverflow.com/questions/2072776/remove-array-values-in-pgsql

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

No, I don't think you can. At least not without writing something ugly like:

SELECT ARRAY (
 SELECT UNNEST(yourarray) LIMIT (
  SELECT array_upper(yourarray, 1) - 1
 )
)

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...