postgresql - Appending data from JSON file to a table
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I am using two columns from the iris dataset as an example - sepal_length and sepal_width.
I have two tables
create table iris(sepal_length real, sepal_width real);, and
create table raw_json(data jsonb);
And inside the JSON file I have data like this
[{"sepal_width":3.5,"sepal_length":5.1},{"sepal_width":3.0,"sepal_length":4.9}]
First thing I do is copy raw_json from '/data.json';
So far I have only been able to figure out how to use jsonb_array_elements.
select jsonb_array_elements(data) from raw_json; gives back
jsonb_array_elements
-------------------------------------------
{"sepal_width": 3.5, "sepal_length": 5.1}
{"sepal_width": 3.0, "sepal_length": 4.9}
I want to insert (append actually) the data from raw_json table into iris table. I have figured out that I need to use either jsonb_to_recordset or json_populate_recordset. But how?
Also, could this be done without the raw_json table?
PS - Almost all the existing SE questions use a raw json string inside their queries. So that didn't work for me.
postgresql json
asked 6 mins ago
Jeet ParekhJeet Parekh
101
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Jeet Parekh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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I am using two columns from the iris dataset as an example - sepal_length and sepal_width.
I have two tables
create table iris(sepal_length real, sepal_width real);, and
create table raw_json(data jsonb);
And inside the JSON file I have data like this
[{"sepal_width":3.5,"sepal_length":5.1},{"sepal_width":3.0,"sepal_length":4.9}]
First thing I do is copy raw_json from '/data.json';
So far I have only been able to figure out how to use jsonb_array_elements.
select jsonb_array_elements(data) from raw_json; gives back
jsonb_array_elements
-------------------------------------------
{"sepal_width": 3.5, "sepal_length": 5.1}
{"sepal_width": 3.0, "sepal_length": 4.9}
I want to insert (append actually) the data from raw_json table into iris table. I have figured out that I need to use either jsonb_to_recordset or json_populate_recordset. But how?
Also, could this be done without the raw_json table?
PS - Almost all the existing SE questions use a raw json string inside their queries. So that didn't work for me.
postgresql json
asked 6 mins ago
Jeet ParekhJeet Parekh
101
New contributor
Jeet Parekh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I am using two columns from the iris dataset as an example - sepal_length and sepal_width.
I have two tables
create table iris(sepal_length real, sepal_width real);, and
create table raw_json(data jsonb);
And inside the JSON file I have data like this
[{"sepal_width":3.5,"sepal_length":5.1},{"sepal_width":3.0,"sepal_length":4.9}]
First thing I do is copy raw_json from '/data.json';
So far I have only been able to figure out how to use jsonb_array_elements.
select jsonb_array_elements(data) from raw_json; gives back
jsonb_array_elements
-------------------------------------------
{"sepal_width": 3.5, "sepal_length": 5.1}
{"sepal_width": 3.0, "sepal_length": 4.9}
I want to insert (append actually) the data from raw_json table into iris table. I have figured out that I need to use either jsonb_to_recordset or json_populate_recordset. But how?
Also, could this be done without the raw_json table?
PS - Almost all the existing SE questions use a raw json string inside their queries. So that didn't work for me.
postgresql json
asked 6 mins ago
Jeet ParekhJeet Parekh
101
New contributor
Jeet Parekh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I am using two columns from the iris dataset as an example - sepal_length and sepal_width.
I have two tables
create table iris(sepal_length real, sepal_width real);, and
create table raw_json(data jsonb);
And inside the JSON file I have data like this
[{"sepal_width":3.5,"sepal_length":5.1},{"sepal_width":3.0,"sepal_length":4.9}]
First thing I do is copy raw_json from '/data.json';
So far I have only been able to figure out how to use jsonb_array_elements.
select jsonb_array_elements(data) from raw_json; gives back
jsonb_array_elements
-------------------------------------------
{"sepal_width": 3.5, "sepal_length": 5.1}
{"sepal_width": 3.0, "sepal_length": 4.9}
I want to insert (append actually) the data from raw_json table into iris table. I have figured out that I need to use either jsonb_to_recordset or json_populate_recordset. But how?
Also, could this be done without the raw_json table?
PS - Almost all the existing SE questions use a raw json string inside their queries. So that didn't work for me.
postgresql json
postgresql json
asked 6 mins ago
Jeet ParekhJeet Parekh
101
New contributor
Jeet Parekh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 6 mins ago
Jeet ParekhJeet Parekh
101
New contributor
Jeet Parekh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 6 mins ago
Jeet ParekhJeet Parekh
101
New contributor
Jeet Parekh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 6 mins ago
Jeet ParekhJeet Parekh
101
asked 6 mins ago
Jeet ParekhJeet Parekh
101
101
New contributor
Jeet Parekh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Jeet Parekh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Jeet Parekh is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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