SQLite GROUP_CONCAT from another table, multiple joins
Having trouble with my sql query. Not an SQL expert by any means.
SELECT
transactions.*,
categories.*,
GROUP_CONCAT(tags.tagName) as concatTags
FROM transactions
INNER JOIN categories
ON transactions.category = categories.categoryId
LEFT JOIN TransactionTagRelation AS ttr
ON transactions.transactionId = ttr.transactionId
LEFT JOIN tags
ON tags.tagId = ttr.tagId;
(There's also a where and group by, but didn't think it was relevant to the question).
I'm trying to get:
transactionId1, ...otherStuff..., "tagId1,tagId2,tagId3"
transactionId2, ...otherStuff..., "tagId1,tagId3"
What I have now seems to merge the tags into one transaction or something. I tried adding a GROUP BY transactionID at the end, but it gives a syntax error for some reason. I have a feeling my joins are incorrect, but I wasn't able to get anything better.
sql sqlite
asked Nov 15 '18 at 0:33
LucasLucas
411210
add a comment |
Having trouble with my sql query. Not an SQL expert by any means.
SELECT
transactions.*,
categories.*,
GROUP_CONCAT(tags.tagName) as concatTags
FROM transactions
INNER JOIN categories
ON transactions.category = categories.categoryId
LEFT JOIN TransactionTagRelation AS ttr
ON transactions.transactionId = ttr.transactionId
LEFT JOIN tags
ON tags.tagId = ttr.tagId;
(There's also a where and group by, but didn't think it was relevant to the question).
I'm trying to get:
transactionId1, ...otherStuff..., "tagId1,tagId2,tagId3"
transactionId2, ...otherStuff..., "tagId1,tagId3"
What I have now seems to merge the tags into one transaction or something. I tried adding a GROUP BY transactionID at the end, but it gives a syntax error for some reason. I have a feeling my joins are incorrect, but I wasn't able to get anything better.
sql sqlite
asked Nov 15 '18 at 0:33
LucasLucas
411210
add a comment |
Having trouble with my sql query. Not an SQL expert by any means.
SELECT
transactions.*,
categories.*,
GROUP_CONCAT(tags.tagName) as concatTags
FROM transactions
INNER JOIN categories
ON transactions.category = categories.categoryId
LEFT JOIN TransactionTagRelation AS ttr
ON transactions.transactionId = ttr.transactionId
LEFT JOIN tags
ON tags.tagId = ttr.tagId;
(There's also a where and group by, but didn't think it was relevant to the question).
I'm trying to get:
transactionId1, ...otherStuff..., "tagId1,tagId2,tagId3"
transactionId2, ...otherStuff..., "tagId1,tagId3"
What I have now seems to merge the tags into one transaction or something. I tried adding a GROUP BY transactionID at the end, but it gives a syntax error for some reason. I have a feeling my joins are incorrect, but I wasn't able to get anything better.
sql sqlite
asked Nov 15 '18 at 0:33
LucasLucas
411210
Having trouble with my sql query. Not an SQL expert by any means.
SELECT
transactions.*,
categories.*,
GROUP_CONCAT(tags.tagName) as concatTags
FROM transactions
INNER JOIN categories
ON transactions.category = categories.categoryId
LEFT JOIN TransactionTagRelation AS ttr
ON transactions.transactionId = ttr.transactionId
LEFT JOIN tags
ON tags.tagId = ttr.tagId;
(There's also a where and group by, but didn't think it was relevant to the question).
I'm trying to get:
transactionId1, ...otherStuff..., "tagId1,tagId2,tagId3"
transactionId2, ...otherStuff..., "tagId1,tagId3"
What I have now seems to merge the tags into one transaction or something. I tried adding a GROUP BY transactionID at the end, but it gives a syntax error for some reason. I have a feeling my joins are incorrect, but I wasn't able to get anything better.
sql sqlite
sql sqlite
asked Nov 15 '18 at 0:33
LucasLucas
411210
asked Nov 15 '18 at 0:33
LucasLucas
411210
asked Nov 15 '18 at 0:33
LucasLucas
411210
asked Nov 15 '18 at 0:33
LucasLucas
411210
asked Nov 15 '18 at 0:33
LucasLucas
411210
411210
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Do something like this:
SELECT t.*, c.*,
(SELECT GROUP_CONCAT(tg.tagName)
FROM TransactionTagRelation ttr JOIN
Tags tg
ON tg.tagId = ttr.tagId
WHERE t.transactionId = ttr.transactionId
) as concatTags
FROM transactions t JOIN
categories c
ON t.category = c.categoryId;
This eliminates the GROUP BY in the outer query and allows you to use t.* and c.* in the SELECT.
answered Nov 15 '18 at 0:35
Gordon LinoffGordon Linoff
790k35314418
What if I want to use tags for filtering in this query? (Also why did myGROUP BYcause an error?)
– Lucas
Nov 15 '18 at 21:49
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Do something like this:
SELECT t.*, c.*,
(SELECT GROUP_CONCAT(tg.tagName)
FROM TransactionTagRelation ttr JOIN
Tags tg
ON tg.tagId = ttr.tagId
WHERE t.transactionId = ttr.transactionId
) as concatTags
FROM transactions t JOIN
categories c
ON t.category = c.categoryId;
This eliminates the GROUP BY in the outer query and allows you to use t.* and c.* in the SELECT.
answered Nov 15 '18 at 0:35
Gordon LinoffGordon Linoff
790k35314418
What if I want to use tags for filtering in this query? (Also why did myGROUP BYcause an error?)
– Lucas
Nov 15 '18 at 21:49
add a comment |
Do something like this:
SELECT t.*, c.*,
(SELECT GROUP_CONCAT(tg.tagName)
FROM TransactionTagRelation ttr JOIN
Tags tg
ON tg.tagId = ttr.tagId
WHERE t.transactionId = ttr.transactionId
) as concatTags
FROM transactions t JOIN
categories c
ON t.category = c.categoryId;
This eliminates the GROUP BY in the outer query and allows you to use t.* and c.* in the SELECT.
answered Nov 15 '18 at 0:35
Gordon LinoffGordon Linoff
790k35314418
What if I want to use tags for filtering in this query? (Also why did myGROUP BYcause an error?)
– Lucas
Nov 15 '18 at 21:49
add a comment |
Do something like this:
SELECT t.*, c.*,
(SELECT GROUP_CONCAT(tg.tagName)
FROM TransactionTagRelation ttr JOIN
Tags tg
ON tg.tagId = ttr.tagId
WHERE t.transactionId = ttr.transactionId
) as concatTags
FROM transactions t JOIN
categories c
ON t.category = c.categoryId;
This eliminates the GROUP BY in the outer query and allows you to use t.* and c.* in the SELECT.
answered Nov 15 '18 at 0:35
Gordon LinoffGordon Linoff
790k35314418
Do something like this:
SELECT t.*, c.*,
(SELECT GROUP_CONCAT(tg.tagName)
FROM TransactionTagRelation ttr JOIN
Tags tg
ON tg.tagId = ttr.tagId
WHERE t.transactionId = ttr.transactionId
) as concatTags
FROM transactions t JOIN
categories c
ON t.category = c.categoryId;
This eliminates the GROUP BY in the outer query and allows you to use t.* and c.* in the SELECT.
answered Nov 15 '18 at 0:35
Gordon LinoffGordon Linoff
790k35314418
answered Nov 15 '18 at 0:35
Gordon LinoffGordon Linoff
790k35314418
answered Nov 15 '18 at 0:35
Gordon LinoffGordon Linoff
790k35314418
answered Nov 15 '18 at 0:35
Gordon LinoffGordon Linoff
790k35314418
790k35314418
What if I want to use tags for filtering in this query? (Also why did myGROUP BYcause an error?)
– Lucas
Nov 15 '18 at 21:49
add a comment |
What if I want to use tags for filtering in this query? (Also why did myGROUP BYcause an error?)
– Lucas
Nov 15 '18 at 21:49
What if I want to use tags for filtering in this query? (Also why did my
GROUP BY cause an error?)– Lucas
Nov 15 '18 at 21:49
What if I want to use tags for filtering in this query? (Also why did my
GROUP BY cause an error?)– Lucas
Nov 15 '18 at 21:49
add a comment |
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