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
480 views
in Technique[技术] by (71.8m points)

sql - Postgresql tables exists, but getting "relation does not exist" when querying

I have a postgresql db with a number of tables. If I query:

SELECT column_name
FROM information_schema.columns
WHERE table_name="my_table";

I will get a list of the columns returned properly.

However, when I query:

SELECT *
FROM "my_table";

I get the error:

(ProgrammingError) relation "my_table" does not exist
'SELECT *
    FROM "my_table"
' {}

Any thoughts on why I can get the columns, but can't query the table? Goal is to be able to query the table.

See Question&Answers more detail:os

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)

You have to include the schema if isnt a public one

SELECT *
FROM <schema>."my_table"

Or you can change your default schema

SHOW search_path;
SET search_path TO my_schema;

Check your table schema here

SELECT *
FROM information_schema.columns

enter image description here

For example if a table is on the default schema public both this will works ok

SELECT * FROM parroquias_region
SELECT * FROM public.parroquias_region

But sectors need specify the schema

SELECT * FROM map_update.sectores_point

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

...