this indicates a bindparam() object is being interpreted as a value somewhere
but I can't reproduce that.
can you provide an MCVE ?
On Tue, Sep 15, 2020, at 11:33 AM, Massimiliano della Rovere wrote:
> Yes, Mike, that solved the problem! I forgot to pass the column name.
>
> Now I get a different error: bindparam is not json-serializable.
> StatementError('(builtins.TypeError) Object of type BindParameter is not JSON
> serializable'),
>
> Is the JSONB column not supporting lazy/bindparam-compatible "preparing" of
> queries?
>
> Il giorno mar 15 set 2020 alle ore 17:13 Mike Bayer
> <[email protected]> ha scritto:
>> __
>> the dictionary is with column names as keys:
>>
>>
>> set_={"data": bindparam("timestamps")}
>>
>> hope this helps
>>
>>
>>
>> On Tue, Sep 15, 2020, at 10:55 AM, Massimiliano della Rovere wrote:
>>> Greetings,
>>> I am using SQLAlchemy==1.3.18.
>>>
>>> I have an SQLAlchemy "Settings" table with a "data" column defined as:
>>>
>>> from sqlalchemy.dialects.postgresql import JSONB
>>> Settings = Table(
>>> "settings",
>>> self._metadata,
>>> # ...
>>> Column("data", JSONB, nullable=False))
>>>
>>> and later in the code this "baked" query:
>>>
>>> from sqlalchemy.dialects.postgresql import insert as pinsert, JSONB
>>> query = (
>>> pinsert(Settings)
>>> .values({
>>> "key": "xxx",
>>> "data": bindparam("timestamps", type_=JSONB)})
>>> .on_conflict_do_update(
>>> index_elements=(Settings.columns.key,),
>>> set_=bindparam("timestamps", type_=JSONB))
>>>
>>> The python interpreter throws me the following error raised by
>>> sqlalchemy.dialects.postgresql.dml line 227:
>>> if not isinstance(set_, dict) or not set_:
>>> raise ValueError("set parameter must be a non-empty dictionary")
>>>
>>> it seems that the "set_" parameter of the "on_conflict_do_update" method
>>> requires a dict, and thus is not compatible with bindparam.
>>> I have also tried to set the "type_" parameter of bindparam to dict, but I
>>> did not solve the problem.
>>>
>>> Please, can anybody help me?
>>>
>>>
>>> --
>>> SQLAlchemy -
>>> The Python SQL Toolkit and Object Relational Mapper
>>>
>>> http://www.sqlalchemy.org/
>>>
>>> To post example code, please provide an MCVE: Minimal, Complete, and
>>> Verifiable Example. See http://stackoverflow.com/help/mcve for a full
>>> description.
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>>> <https://groups.google.com/d/msgid/sqlalchemy/CADKhPGT_mze%2BgjD%3DYoNd7tPGtpYMNnreKne%3DgwWMuJMZ0g2-xw%40mail.gmail.com?utm_medium=email&utm_source=footer>.
>>
>>
>> --
>> SQLAlchemy -
>> The Python SQL Toolkit and Object Relational Mapper
>>
>> http://www.sqlalchemy.org/
>>
>> To post example code, please provide an MCVE: Minimal, Complete, and
>> Verifiable Example. See http://stackoverflow.com/help/mcve for a full
>> description.
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>
> --
> SQLAlchemy -
> The Python SQL Toolkit and Object Relational Mapper
>
> http://www.sqlalchemy.org/
>
> To post example code, please provide an MCVE: Minimal, Complete, and
> Verifiable Example. See http://stackoverflow.com/help/mcve for a full
> description.
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>
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--
SQLAlchemy -
The Python SQL Toolkit and Object Relational Mapper
http://www.sqlalchemy.org/
To post example code, please provide an MCVE: Minimal, Complete, and Verifiable
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