I have query like this.
SELECT account.AccountNumber, account.Name, Sum(agro.price*agro.qty) AS Expr1
FROM account,data INNER JOIN (agro INNER JOIN data ON agro.BillNo = data.BillNo) ON
account.AccountNumber = data.acno
GROUP BY account.AccountNumber, account.Name;
I want to add where db='true' this columns is of 'data' table then how can i do pls help me?
Try this:
SELECT account.AccountNumber, account.NAME, Sum(agro.price * agro.qty) AS Expr1
FROM ((account
INNER JOIN data ON account.AccountNumber = data.acno)
INNER JOIN agro ON agro.BillNo = data.BillNo)
WHERE data.db='true'
GROUP BY account.AccountNumber, account.NAME;
You had some confusion in your JOINs, but i think this is what you were aiming for
Related
I SELECT data from a MySQL database and I'm trying to replace WHERE column_name = 'name' with a wildcard like WHERE column_name LIKE '%name%'.
Sounds too easy, right?
The original code (which works perfectly) looks like this:
SELECT DISTINCT a.title_id, a.artist_id, fe_title.title, fe_artist.artist
FROM fe_title_artist AS a
INNER JOIN fe_title ON a.title_id = fe_title.id
INNER JOIN fe_artist ON a.artist_id = fe_artist.id
INNER JOIN fe_title_artist AS b
WHERE a.title_id=b.title_id
and b.artist_id=(SELECT id FROM fe_artist WHERE artist = 'Patrick Duffy')
What I tried and failed with looks like this:
SELECT DISTINCT a.title_id, a.artist_id, fe_title.title, fe_artist.artist
FROM fe_title_artist AS a
INNER JOIN fe_title ON a.title_id = fe_title.id
INNER JOIN fe_artist ON a.artist_id = fe_artist.id
INNER JOIN fe_title_artist AS b
WHERE a.title_id=b.title_id
and b.artist_id=(SELECT id FROM fe_artist WHERE artist LIKE '%Patrick%')
No results on this one.
Is a wildcard within a where clause just too much? Is the self join causing the problem? Is there a way to code this differently? Am I just stupid?
I hope someone can help me. Thank you.
Its due to Subquery returns more than 1 rows. Please use below Query.
SELECT DISTINCT a.title_id, a.artist_id, fe_title.title, fe_artist.artist
FROM fe_title_artist AS a
INNER JOIN fe_title ON a.title_id = fe_title.id
INNER JOIN fe_artist ON a.artist_id = fe_artist.id
INNER JOIN fe_title_artist AS b
WHERE a.title_id=b.title_id
and b.artist_id IN (SELECT id FROM fe_artist WHERE artist LIKE '%Patrick%')
I am working with a MySQL database. I am suppose to combine three select queries, to "improve performance". Each select below is dependent on the previous ID retrieved.
So far, I've tried the following...
# multiple select from tables
select user.name, group.ID
from user as u, group as g
where u.name = <name_here>
# inner join...
select user.ID, group.ID,
from user
inner join group
on user.ID = group.ID
I need to select the user.name and group.ID based on a username param. Is there a way to query this data in a single statement?
I don't know if I understand your need, lets try:
Try to use this query:
select pGroupMatch.GroupID, ProfileData.ID
from pUserMatch
inner join pGroupMatch on pGroupMatch.GroupID = pUserMatch.GroupID
inner join ProfileData on ProfileData.id = pGroupMatch.ProfileID
where pUserMatch.username = "<username>";
Check if you can create indexes for improve your query, if you can try it:
CREATE INDEX idx_pUserMatch_01 ON pUserMatch (GroupID);
CREATE INDEX idx_pGroupMatch_01 ON pGroupMatch (ProfileID);
Please use join for your requirement. Please try below query
select t3.* from Profiles.pUserMatch t1
left join Profiles.pGroupMatch t2 ON t2.GroupID=t1.GroupID
left join Profiles.ProfileData t3 ON t3.ID=t2.ProfileID
where t1.username = "<username>";
I hope above query will help you.Please feel free to comment. Thanks.
This is the query you get by joining the tree queries you already have:
SELECT pd.*
FROM Profiles.ProfileData pd
# ... where ID = "<profile_id>", profile_id = select ProfileID from ...
INNER JOIN Profiles.pGroupMatch pm ON pd.ID = pm.ProfileID
# ... where GroupID = "<group_id>", group_id = select GroupID from ...
INNER JOIN Profiles.pUserMatch pu ON pm.GroupID = pm.GroupID
WHERE pm.username = "<username>"
I put in comments the fragments of your queries that gets converted to JOIN subclauses.
Read more about the syntax of the JOIN subclause of the SELECT statement.
You don't need foreign keys to join stuff:
select p.* from Profiles.pUserMatch u
join Profile.pGroupMatch g on u.GroupID = g.GroupID
join Profile.ProfileData p on g.ProfileID = p.ID
where u.username = ?
I have three queries gives me result individually correct but my requirement is i need all result in single query only so how should i proceed?
select * from user_post_like
inner join user_post on user_post_like.postID = user_post.postID
inner join Users on Users.userID=user_post_like.userID
where (user_post.poster='$uid' AND user_post_like.userID!='$uid')
ORDER BY likeID DESC;
select * from user_post_comment
inner join user_post on user_post_comment.postID = user_post.postID
inner join Users on Users.userID=user_post_comment.commenter
where (user_post.poster='$uid' AND user_post_comment.commenter!='$uid')
ORDER BY commentID DESC;
select * from user_post_share
inner join user_post on user_post_share.postID = user_post.postID
inner join Users on Users.userID=user_post_share.Share_user_id
where (user_post.poster='$uid' AND user_post_share.Share_user_id!='$uid')
ORDER BY shareID DESC;
Since you're joining the tables anyway, you can put columns from all in your select - and keep your statement readable. If you have duplicate column names (from different tables) you may need to aggregate them with functions and group by.
SELECT s.*, p.*, u.*
FROM user_post_share s
INNER JOIN user_post p ON s.postID = p.postID
INNER JOIN Users u ON u.userID = p.poster
WHERE (p.poster='$uid' AND s.Share_user_id != '$uid')
ORDER BY shareID DESC
try sumthing like this
select * from user_post_like,user_post_comment,user_post_share <inner joins> <where conditions>
select simplex_comunes.cod_color_piel.descripcion as cod_color_piel, simplex_comunes.cod_sexo.descripcion as cod_sexo, count(*)
from simplex_comunes.cod_color_piel,simplex_comunes.cod_sexo
inner join simplex_ch.dat_trabajadores on simplex_ch.dat_trabajadores.id_color_piel = simplex_comunes.cod_color_piel.codigo
inner join simplex_ch.dat_trabajadores on simplex_comunes.cod_sexo.codigo = simplex_ch.dat_trabajadores.id_sexo
group by simplex_comunes.cod_color_piel.descripcion,simplex_comunes.cod_sexo.descripcion
the error is Not unique table/alias: 'dat_trabajadores',
Please help, thanks!!!
I haven't checked if your query is "intelligent" or not, but you have to use aliases as you use twice dat_trabajadores in your query.
You have to tell MySQL which table you use in your JOIN.
select simplex_comunes.cod_color_piel.descripcion as cod_color_piel, simplex_comunes.cod_sexo.descripcion as cod_sexo, count(*)
from simplex_comunes.cod_color_piel,simplex_comunes.cod_sexo
inner join simplex_ch.dat_trabajadores tr1 on simplex_ch.tr1.id_color_piel = simplex_comunes.cod_color_piel.codigo
inner join simplex_ch.dat_trabajadores tr2 on simplex_comunes.cod_sexo.codigo = simplex_ch.tr2.id_sexo
group by simplex_comunes.cod_color_piel.descripcion,simplex_comunes.cod_sexo.descripcion
you have two same aliases in your query.
rename them differently
select simplex_comunes.cod_color_piel.descripcion as descripcion,
simplex_comunes.cod_sexo.descripcion as cod_sexo_descripcion,
count(*)
from simplex_comunes.cod_color_piel,simplex_comunes.cod_sexo
inner join simplex_ch.dat_trabajadores t1 on t1.id_color_piel = simplex_comunes.cod_color_piel.codigo
inner join simplex_ch.dat_trabajadores t2 on simplex_comunes.cod_sexo.codigo = t2.id_sexo
group by simplex_comunes.cod_color_piel.descripcion,simplex_comunes.cod_sexo.descripcion
Here is my sql data fiddler http://sqlfiddle.com/#!2/63178/1. Waht's wrong with my query?
SELECT DISTINCT curr.id,curr.curr_tittle, curr.curr_desc
FROM wp_curriculum curr LEFT JOIN (SELECT DISTINCT * FROM wp_curriculum_topic WHERE curr_topic IN (4,12)) AS A ON A.curr_id = curr.id ORDER BY A.id
If you are looking for matching row from both the table then just replace LEFT JOIN to INNER JOIN, otherwise your sql query is showing expected result for LEFT JOIN condition.
SQL Query with INNER JOIN:
SELECT DISTINCT curr.id,curr.curr_tittle, curr.curr_desc FROM wp_curriculum curr INNER JOIN (SELECT DISTINCT * FROM wp_curriculum_topic WHERE curr_topic IN (4,12)) AS A ON curr.id = A.curr_id ORDER BY A.id
Your query works as expected. Could it be you are mixing ID and CURR_ID?