[英]Get the value from nested JSON in Postgres
I have a table called "Audio" with a column "transcript" as the following: 我有一个名为“ Audio”的表,其列为“ transcript”,如下所示:
{"transcript": [
{"p": 0, "s": 0, "e": 320, "c": 0.545, "w": "This"},
{"p": 1, "s": 320, "e": 620, "c": 0.825, "w": "call"},
{"p": 2, "s": 620, "e": 780, "c": 0.909, "w": "is"},
{"p": 3, "s": 780, "e": 1010, "c": 0.853, "w": "being"}
...
]}
I would like to get the value of "p" where "w" matches certain keywords. 我想获取“ p”的值,其中“ w”与某些关键字匹配。
If I do the following query, it will give me the entire 's' entries of Audio where one of its "w" has words "google" or "all." 如果我执行以下查询,它将为我提供音频的整个“ s”条目,其中“ w”之一带有单词“ google”或“ all”。
select json_array_elements(transcript->'transcript')->>'s'
from Audio,
json_array_elements(transcript->'transcript') as temp
where temp->>'w' ilike any(array['all','google'])
How could I get only value of "p" where the condition is satisfied? 在满足条件的情况下,如何仅获得“ p”的值?
Edit: How could I get the value of "p" and its corresponding Audio ID at the same time? 编辑:我怎样才能同时获得“ p”的值及其对应的音频ID?
Select your transcript array elements into a common table expression and match from there: 选择您的成绩单数组元素到公共表表达式中,然后从那里进行匹配:
WITH transcript AS (
SELECT json_array_elements((transcript -> 'transcript')) AS line
FROM audio
)
SELECT line ->> 'p'
FROM transcript
WHERE line ->> 'w' ILIKE ANY (ARRAY ['all', 'google']);
This will select matching lines from all rows in the audio table. 这将从音频表的所有行中选择匹配的行。 I'm guessing that you'll want to restrict the results to a subset of rows, in which case you'll have to narrow the query.
我猜想您希望将结果限制为行的子集,在这种情况下,您将不得不缩小查询范围。 Assuming an
id
column, do something like this: 假设有一个
id
列,请执行以下操作:
WITH transcript AS (
SELECT
id,
json_array_elements((transcript -> 'transcript')) AS line
FROM audio
WHERE id = 1
)
SELECT
id,
line ->> 'p'
FROM transcript
WHERE line ->> 'w' ILIKE ANY (ARRAY ['call', 'google'])
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