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From: Adrian Klaver <[email protected]>
To: Hans Ginzel <[email protected]>
To: [email protected]
Subject: Re: insert DEFAULT value
Date: Wed, 3 Mar 2021 15:23:28 -0800
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

On 3/3/21 1:51 PM, Hans Ginzel wrote:
> How to insert DEFAULT value, please?
> 
> import psycopg2
> from psycopg2.sql import DEFAULT    # 
> https://www.postgresql-archive.org/Inserting-default-values-into-execute-values-td6130148.html 
> 
> 
> db = psycopg2.connect(host='host', dbname='db')
> cursor = db.cursor()
> cursor.execute("DROP TABLE IF EXISTS test_default")
> cursor.execute("CREATE TABLE test_default(i int NOT NULL DEFAULT 1)")
> cursor.execute("INSERT INTO test_default VALUES (%s)", (DEFAULT,))
> 
> cursor.execute("DROP TABLE IF EXISTS test_default")
> cursor.execute("CREATE TABLE test_default(j jsonb NOT NULL DEFAULT 
> '{}'::jsonb)")
> cursor.execute("INSERT INTO test_default VALUES (%s)", (DEFAULT,))
> 
> For both cases I get
> psycopg2.ProgrammingError: can't adapt type 'SQL'

You need to do something like:

cur.execute(sql.SQL("INSERT INTO test_default VALUES ({})").format(DEFAULT))

> 
> Thank you in advance,
> HG
> 
> 


-- 
Adrian Klaver
[email protected]

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