How to make a query with the data of another query on SQL?
I have a user table and another order table. A user can have many orders. How do I get the last 1000 users and those users use my last 1000 orders for each one?
Query - Get users
select distinct users.id, users.first_name, users.last_name
from users
limit 2;
Query - Get orders
select distinct orders.id, orders.user_id
from orders
limit 2;
postgresql
edited Nov 20 at 18:34
Madhur Bhaiya
19.5k62236
asked Nov 20 at 18:28
Arturo Verbel De León
305
add a comment |
I have a user table and another order table. A user can have many orders. How do I get the last 1000 users and those users use my last 1000 orders for each one?
Query - Get users
select distinct users.id, users.first_name, users.last_name
from users
limit 2;
Query - Get orders
select distinct orders.id, orders.user_id
from orders
limit 2;
postgresql
edited Nov 20 at 18:34
Madhur Bhaiya
19.5k62236
asked Nov 20 at 18:28
Arturo Verbel De León
305
MySQL <> PostgreSQL. Please specify which RDBMS are you using ?
– Madhur Bhaiya
Nov 20 at 18:31
Sorry, I am using PostgreSQL
– Arturo Verbel De León
Nov 20 at 18:33
2
to know the "last" you will need to know when the users made the order. namely, add something like "purchase_date"
– Sharon Ben Asher
Nov 20 at 20:31
add a comment |
I have a user table and another order table. A user can have many orders. How do I get the last 1000 users and those users use my last 1000 orders for each one?
Query - Get users
select distinct users.id, users.first_name, users.last_name
from users
limit 2;
Query - Get orders
select distinct orders.id, orders.user_id
from orders
limit 2;
postgresql
edited Nov 20 at 18:34
Madhur Bhaiya
19.5k62236
asked Nov 20 at 18:28
Arturo Verbel De León
305
I have a user table and another order table. A user can have many orders. How do I get the last 1000 users and those users use my last 1000 orders for each one?
Query - Get users
select distinct users.id, users.first_name, users.last_name
from users
limit 2;
Query - Get orders
select distinct orders.id, orders.user_id
from orders
limit 2;
postgresql
postgresql
edited Nov 20 at 18:34
Madhur Bhaiya
19.5k62236
asked Nov 20 at 18:28
Arturo Verbel De León
305
edited Nov 20 at 18:34
Madhur Bhaiya
19.5k62236
asked Nov 20 at 18:28
Arturo Verbel De León
305
edited Nov 20 at 18:34
Madhur Bhaiya
19.5k62236
edited Nov 20 at 18:34
Madhur Bhaiya
19.5k62236
edited Nov 20 at 18:34
Madhur Bhaiya
19.5k62236
19.5k62236
asked Nov 20 at 18:28
Arturo Verbel De León
305
asked Nov 20 at 18:28
Arturo Verbel De León
305
asked Nov 20 at 18:28
Arturo Verbel De León
305
305
MySQL <> PostgreSQL. Please specify which RDBMS are you using ?
– Madhur Bhaiya
Nov 20 at 18:31
Sorry, I am using PostgreSQL
– Arturo Verbel De León
Nov 20 at 18:33
2
to know the "last" you will need to know when the users made the order. namely, add something like "purchase_date"
– Sharon Ben Asher
Nov 20 at 20:31
add a comment |
MySQL <> PostgreSQL. Please specify which RDBMS are you using ?
– Madhur Bhaiya
Nov 20 at 18:31
Sorry, I am using PostgreSQL
– Arturo Verbel De León
Nov 20 at 18:33
2
to know the "last" you will need to know when the users made the order. namely, add something like "purchase_date"
– Sharon Ben Asher
Nov 20 at 20:31
MySQL <> PostgreSQL. Please specify which RDBMS are you using ?
– Madhur Bhaiya
Nov 20 at 18:31
MySQL <> PostgreSQL. Please specify which RDBMS are you using ?
– Madhur Bhaiya
Nov 20 at 18:31
Sorry, I am using PostgreSQL
– Arturo Verbel De León
Nov 20 at 18:33
Sorry, I am using PostgreSQL
– Arturo Verbel De León
Nov 20 at 18:33
2
2
to know the "last" you will need to know when the users made the order. namely, add something like "purchase_date"
– Sharon Ben Asher
Nov 20 at 20:31
to know the "last" you will need to know when the users made the order. namely, add something like "purchase_date"
– Sharon Ben Asher
Nov 20 at 20:31
add a comment |
1 Answer
1
active
oldest
votes
First you need to know.. When it comes to query data don't do separate operation.. If you put out All Users and Orders Your data will be unordered and not consistency.. So you need to make Join to see All User with Order they have.. And as stated by @Sharon you need to add column date_ordered to see that order make.. I am assume you already have that column but i will call that column with date_ordered..
And your query will be :
select
users.id,
users.first_name,
users.last_name,
orders.id
from
users
inner join orders on users.id = orders.user_id
order by
orders.date_ordered desc
limit 1000
By order date_ordered use desc you will get the latest all the user with their order.. And i assume user_id column in table orders have constraint foreign key references to table users with column id..
answered Nov 21 at 0:00
dwir182
1,368618
add a comment |
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1 Answer
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active
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1 Answer
1
active
oldest
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active
oldest
votes
active
oldest
votes
First you need to know.. When it comes to query data don't do separate operation.. If you put out All Users and Orders Your data will be unordered and not consistency.. So you need to make Join to see All User with Order they have.. And as stated by @Sharon you need to add column date_ordered to see that order make.. I am assume you already have that column but i will call that column with date_ordered..
And your query will be :
select
users.id,
users.first_name,
users.last_name,
orders.id
from
users
inner join orders on users.id = orders.user_id
order by
orders.date_ordered desc
limit 1000
By order date_ordered use desc you will get the latest all the user with their order.. And i assume user_id column in table orders have constraint foreign key references to table users with column id..
answered Nov 21 at 0:00
dwir182
1,368618
add a comment |
First you need to know.. When it comes to query data don't do separate operation.. If you put out All Users and Orders Your data will be unordered and not consistency.. So you need to make Join to see All User with Order they have.. And as stated by @Sharon you need to add column date_ordered to see that order make.. I am assume you already have that column but i will call that column with date_ordered..
And your query will be :
select
users.id,
users.first_name,
users.last_name,
orders.id
from
users
inner join orders on users.id = orders.user_id
order by
orders.date_ordered desc
limit 1000
By order date_ordered use desc you will get the latest all the user with their order.. And i assume user_id column in table orders have constraint foreign key references to table users with column id..
answered Nov 21 at 0:00
dwir182
1,368618
add a comment |
First you need to know.. When it comes to query data don't do separate operation.. If you put out All Users and Orders Your data will be unordered and not consistency.. So you need to make Join to see All User with Order they have.. And as stated by @Sharon you need to add column date_ordered to see that order make.. I am assume you already have that column but i will call that column with date_ordered..
And your query will be :
select
users.id,
users.first_name,
users.last_name,
orders.id
from
users
inner join orders on users.id = orders.user_id
order by
orders.date_ordered desc
limit 1000
By order date_ordered use desc you will get the latest all the user with their order.. And i assume user_id column in table orders have constraint foreign key references to table users with column id..
answered Nov 21 at 0:00
dwir182
1,368618
First you need to know.. When it comes to query data don't do separate operation.. If you put out All Users and Orders Your data will be unordered and not consistency.. So you need to make Join to see All User with Order they have.. And as stated by @Sharon you need to add column date_ordered to see that order make.. I am assume you already have that column but i will call that column with date_ordered..
And your query will be :
select
users.id,
users.first_name,
users.last_name,
orders.id
from
users
inner join orders on users.id = orders.user_id
order by
orders.date_ordered desc
limit 1000
By order date_ordered use desc you will get the latest all the user with their order.. And i assume user_id column in table orders have constraint foreign key references to table users with column id..
answered Nov 21 at 0:00
dwir182
1,368618
edited Nov 21 at 5:12
answered Nov 21 at 0:00
dwir182
1,368618
answered Nov 21 at 0:00
dwir182
1,368618
answered Nov 21 at 0:00
dwir182
1,368618
1,368618
add a comment |
add a comment |
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MySQL <> PostgreSQL. Please specify which RDBMS are you using ?
– Madhur Bhaiya
Nov 20 at 18:31
Sorry, I am using PostgreSQL
– Arturo Verbel De León
Nov 20 at 18:33
2
to know the "last" you will need to know when the users made the order. namely, add something like "purchase_date"
– Sharon Ben Asher
Nov 20 at 20:31