如何在postgres和JSON的访问键中循环JSON数组？开发者社区

文章/答案/技术大牛

发布

do $$
DECLARE
DECLARE fname varchar;
DECLARE lname varchar;
DECLARE StartDate timestamp;
DECLARE EndDate timestamp;
DECLARE DateText varchar;
DECLARE uniqueData jsonb = '[
        "fname": "PERFFBB",
        "lname": "PERFE59-AB1899A-A8CAE59-AB1899A-AB1899A-AB1899A-AB1899A-A8CAE59"
        "fname": "PERFD34",
        "lname": "PERFCD5-232D322-BD88CD5-232D322-232D322-232D322-232D322-BD88CD5"
begin for r in 1..(jsonb_array_length(uniqueData) - 1)
fname = uniqueData[r].fname;
lname = uniqueData[r].lname;
-- this is giving a problem. It is unable to access the key.
for z in 1..2 
StartDate = current_date::timestamp - concat(z, ' day')::interval;
EndDate = current_date::timestamp - concat(z - 1, ' day')::interval - interval '1 seconds';
DateText = (
    to_char(
        'now'::timestamp - concat(z, ' day')::interval,
        'Mon DD, YYYY'
INSERT INTO table (
        col1,
        col2,
        col3,
        col4,
values (
        fname,
        lname,
        StartDate,
        EndDate,
        DateText
end loop;
end loop;
$$;

DECLARE var1 RECORD;
FOR var1 IN
  SELECT * FROM jsonb_to_recordset(uniqueData) as x(fname text, lname text)
  -- var1 contains fname and lname fields

问 如何在postgres和JSON的访问键中循环JSON数组？ EN

回答 1

Stack Overflow用户