[英]How to import Json data into Postgres table
I have an API that gives json data text file called corporateHoliday.txt . 我有一个API,可提供名为CorporateHoliday.txt的 json数据文本文件。
The data look like this: 数据如下所示:
{
"holiday_id":"1712010100000104",
"holiday_date":"2018-12-30 00:00:00.0",
"holiday_description":"SUNDAY",
"holiday_status":"A"
},
{
"holiday_id":"1712010100000103",
"holiday_date":"2018-12-29 00:00:00.0",
"holiday_description":"SATURDAY",
"holiday_status":"A"
}
My postgres table attributes look like this t_leave_holida(objectid, holiday_date,description,recstatus) 我的postgres表属性看起来像这样t_leave_holida(objectid,holiday_date,description,recstatus)
I want to import these json data from txt file into the postgres database table? 我想将这些json数据从txt文件导入到postgres数据库表中?
you can use jsonb
type and just select data from json, like here: 您可以使用
jsonb
类型,而只需从json中选择数据,例如:
db=# create table t_leave_holida(objectid bigint, holiday_date timestamp(1), description text,recstatus text);
db=# insert into t_leave_holida select (d->>'holiday_id')::bigint, (d->>'holiday_date')::timestamp, d->>'holiday_description', d->>'holiday_status' from (select '{
"holiday_id":"1712010100000104",
"holiday_date":"2018-12-30 00:00:00.0",
"holiday_description":"SUNDAY",
"holiday_status":"A"
}'::jsonb d) ali;
INSERT 0 1
db=# select * from t_leave_holida;
objectid | holiday_date | description | recstatus
------------------+---------------------+-------------+-----------
1712010100000104 | 2018-12-30 00:00:00 | SUNDAY | A
(1 row)
Construct a json array we can insert all records in t_leave_holida 构造一个json数组,我们可以将所有记录插入t_leave_holida
insert into t_leave_holida(objectid, holiday_date,description,recstatus) select holiday_id,holiday_date,holiday_description,holiday_status from json_to_recordset( '[ { "holiday_id":"1712010100000104", "holiday_date":"2018-12-30 00:00:00.0", "holiday_description":"SUNDAY", "holiday_status":"A" }, { "holiday_id":"1712010100000103", "holiday_date":"2018-12-29 00:00:00.0", "holiday_description":"SATURDAY", "holiday_status":"A" } ]' ) as x(holiday_id bigint, holiday_date date, holiday_description text,holiday_status text);
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