Hi team,
when I learn the postgres, I try to store the ' into the database, 

but something unexpected happend.


postgres=# CREATE TABLE test (str varchar);
CREATE TABLE
postgres=# INSERT INTO test values (''');
postgres'# SELECT * FROM test;
postgres'# exit
Use control-D to quit.
postgres'# \q
Use control-D to quit.
postgres'# 
\q
bash-5.1$ 



And I do another test


postgres=# SELECT ''';
postgres'# exit
Use control-D to quit.
postgres'# \q
Use control-D to quit.
postgres'# 
\q
bash-5.1$ 



Is there a bug in psql?


Yours,
Wen Yi

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