Check if two values exists and return named boolean
I am trying to check if two values exists in a table, for example pseudo and email: If a user wants to signup on my website, I have to check if his pseudo and email are already taken.
So this is what I do:
"SELECT EXISTS (SELECT 1 FROM users WHERE pseudo=$1)
UNION ALL
SELECT EXISTS (SELECT 1 FROM users WHERE mail=$2)", pseudo, email
("pseudo, email" at the end is because I use Golang and those are the variable that are passed in the statement)
It works, and return "false false" for example. But I would like it to return like this:
pseudo: false
email: false
But I don't know how to name the boolean that returns. I have tried this:
"SELECT EXISTS (SELECT 1 FROM users WHERE pseudo=$1) AS pseudo
UNION ALL
SELECT EXISTS (SELECT 1 FROM users WHERE mail=$2) AS email", pseudo, email
But it gives me an error.
Do you know how I could do that?
postgresql exists
edited Nov 23 '18 at 19:05
Zoe
11.1k73776
asked Nov 23 '18 at 18:49
SuperjpSuperjp
33
add a comment |
I am trying to check if two values exists in a table, for example pseudo and email: If a user wants to signup on my website, I have to check if his pseudo and email are already taken.
So this is what I do:
"SELECT EXISTS (SELECT 1 FROM users WHERE pseudo=$1)
UNION ALL
SELECT EXISTS (SELECT 1 FROM users WHERE mail=$2)", pseudo, email
("pseudo, email" at the end is because I use Golang and those are the variable that are passed in the statement)
It works, and return "false false" for example. But I would like it to return like this:
pseudo: false
email: false
But I don't know how to name the boolean that returns. I have tried this:
"SELECT EXISTS (SELECT 1 FROM users WHERE pseudo=$1) AS pseudo
UNION ALL
SELECT EXISTS (SELECT 1 FROM users WHERE mail=$2) AS email", pseudo, email
But it gives me an error.
Do you know how I could do that?
postgresql exists
edited Nov 23 '18 at 19:05
Zoe
11.1k73776
asked Nov 23 '18 at 18:49
SuperjpSuperjp
33
add a comment |
I am trying to check if two values exists in a table, for example pseudo and email: If a user wants to signup on my website, I have to check if his pseudo and email are already taken.
So this is what I do:
"SELECT EXISTS (SELECT 1 FROM users WHERE pseudo=$1)
UNION ALL
SELECT EXISTS (SELECT 1 FROM users WHERE mail=$2)", pseudo, email
("pseudo, email" at the end is because I use Golang and those are the variable that are passed in the statement)
It works, and return "false false" for example. But I would like it to return like this:
pseudo: false
email: false
But I don't know how to name the boolean that returns. I have tried this:
"SELECT EXISTS (SELECT 1 FROM users WHERE pseudo=$1) AS pseudo
UNION ALL
SELECT EXISTS (SELECT 1 FROM users WHERE mail=$2) AS email", pseudo, email
But it gives me an error.
Do you know how I could do that?
postgresql exists
edited Nov 23 '18 at 19:05
Zoe
11.1k73776
asked Nov 23 '18 at 18:49
SuperjpSuperjp
33
I am trying to check if two values exists in a table, for example pseudo and email: If a user wants to signup on my website, I have to check if his pseudo and email are already taken.
So this is what I do:
"SELECT EXISTS (SELECT 1 FROM users WHERE pseudo=$1)
UNION ALL
SELECT EXISTS (SELECT 1 FROM users WHERE mail=$2)", pseudo, email
("pseudo, email" at the end is because I use Golang and those are the variable that are passed in the statement)
It works, and return "false false" for example. But I would like it to return like this:
pseudo: false
email: false
But I don't know how to name the boolean that returns. I have tried this:
"SELECT EXISTS (SELECT 1 FROM users WHERE pseudo=$1) AS pseudo
UNION ALL
SELECT EXISTS (SELECT 1 FROM users WHERE mail=$2) AS email", pseudo, email
But it gives me an error.
Do you know how I could do that?
postgresql exists
postgresql exists
edited Nov 23 '18 at 19:05
Zoe
11.1k73776
asked Nov 23 '18 at 18:49
SuperjpSuperjp
33
edited Nov 23 '18 at 19:05
Zoe
11.1k73776
asked Nov 23 '18 at 18:49
SuperjpSuperjp
33
edited Nov 23 '18 at 19:05
Zoe
11.1k73776
edited Nov 23 '18 at 19:05
Zoe
11.1k73776
edited Nov 23 '18 at 19:05
Zoe
11.1k73776
11.1k73776
asked Nov 23 '18 at 18:49
SuperjpSuperjp
33
asked Nov 23 '18 at 18:49
SuperjpSuperjp
33
asked Nov 23 '18 at 18:49
SuperjpSuperjp
33
33
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You can get the result in a single row with appropriate column names, e.g.:
SELECT
EXISTS (SELECT 1 FROM users WHERE pseudo=$1) AS pseudo,
EXISTS (SELECT 1 FROM users WHERE mail=$2) AS mail
answered Nov 23 '18 at 18:59
klinklin
56.3k54775
It works! Thanks
– Superjp
Nov 23 '18 at 19:24
add a comment |
Your Answer
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can get the result in a single row with appropriate column names, e.g.:
SELECT
EXISTS (SELECT 1 FROM users WHERE pseudo=$1) AS pseudo,
EXISTS (SELECT 1 FROM users WHERE mail=$2) AS mail
answered Nov 23 '18 at 18:59
klinklin
56.3k54775
It works! Thanks
– Superjp
Nov 23 '18 at 19:24
add a comment |
You can get the result in a single row with appropriate column names, e.g.:
SELECT
EXISTS (SELECT 1 FROM users WHERE pseudo=$1) AS pseudo,
EXISTS (SELECT 1 FROM users WHERE mail=$2) AS mail
answered Nov 23 '18 at 18:59
klinklin
56.3k54775
It works! Thanks
– Superjp
Nov 23 '18 at 19:24
add a comment |
You can get the result in a single row with appropriate column names, e.g.:
SELECT
EXISTS (SELECT 1 FROM users WHERE pseudo=$1) AS pseudo,
EXISTS (SELECT 1 FROM users WHERE mail=$2) AS mail
answered Nov 23 '18 at 18:59
klinklin
56.3k54775
You can get the result in a single row with appropriate column names, e.g.:
SELECT
EXISTS (SELECT 1 FROM users WHERE pseudo=$1) AS pseudo,
EXISTS (SELECT 1 FROM users WHERE mail=$2) AS mail
answered Nov 23 '18 at 18:59
klinklin
56.3k54775
answered Nov 23 '18 at 18:59
klinklin
56.3k54775
answered Nov 23 '18 at 18:59
klinklin
56.3k54775
answered Nov 23 '18 at 18:59
klinklin
56.3k54775
56.3k54775
It works! Thanks
– Superjp
Nov 23 '18 at 19:24
add a comment |
It works! Thanks
– Superjp
Nov 23 '18 at 19:24
It works! Thanks
– Superjp
Nov 23 '18 at 19:24
It works! Thanks
– Superjp
Nov 23 '18 at 19:24
add a comment |
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