Question on how to use to_timestamp()

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От Deven Phillips
Тема Question on how to use to_timestamp()
Дата
Msg-id CAJw+4NCQuvN0=MTgAvtruwhbN=Pjk3sfPffmqTAJ2hmLGfeEsw@mail.gmail.com
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Ответы Re: Question on how to use to_timestamp()  (Adrian Klaver <adrian.klaver@aklaver.com>)
Re: Question on how to use to_timestamp()  (Vitaly Burovoy <vitaly.burovoy@gmail.com>)
Список pgsql-general
I'm trying to convert a series of ISO8601 strings into TIMESTAMPs for use with a function:

CREATE OR REPLACE FUNCTION v1_nexus_vlan_count(id TEXT, start_time TIMESTAMP, end_time TIMESTAMP)
RETURNS TEXT AS $$
SELECT jsonb_pretty(jsonb_agg(row_to_json(datapoints))) AS data_array FROM (
SELECT
    data->>'timestamp' AS collection_time,
    data->'data'->'vlans'->>'available' AS available,
    data->'data'->'vlans'->>'total' AS total,
    data->'data'->'vlans'->>'used' AS used
FROM
    gathered_data
WHERE
    data->>'id'=$1 AND
    to_timestamp(data->>'timestamp', 'YYYY-MM-DDTHH24:MI:SSZ')>=$2 AND
    to_timestamp(data->>'timetsamp', 'YYYY-MM-DDTHH24:MI:SSZ')<=$3
ORDER BY
    to_timestamp(data->>'timestamp', 'YYYY-MM-DDTHH24:MI:SSZ')) AS datapoints $$
LANGUAGE SQL;

The conversions for to_timestamp() seems to be my problem. I keep getting an error:

# SELECT to_timestamp('2016-01-01T00:00:00Z', 'YYYY-MM-DDTHH24:MI:SSZ');ERROR:  invalid value ":0" for "MI"
DETAIL:  Value must be an integer.
Time: 1.016 ms


Could anyone suggest what it is that I might be doing wrong here?

Thanks in advance!!!

Deven

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