i recieve an error
column expeertID in field list is ambiguous
im not sure how to fix this
INSERT INTO cv(expertID)
SELECT expertID
FROM experts
INNER JOIN cv ON experts.expertID = cv.expertID;
Try below - you need to add tablename, as expertID column exists in both tables
INSERT INTO cv(expertID)
SELECT experts.expertID
FROM experts
INNER JOIN cv ON experts.expertID = cv.expertID;
You need specify the column name with tablename from which table you want to display or insert data whatever you want :
INSERT INTO cv(expertID)
SELECT e.expertID
FROM experts e INNER JOIN
cv
ON e.expertID = cv.expertID;
try this!
I have used table aliases and then explicitly mentioned the alias with column in select list. Now expertID in select is from experts table rather than ambiguous one.
INSERT INTO cv(expertID)
SELECT e.expertID
FROM experts e
INNER JOIN cv c ON e .expertID = c.expertID;
Related
this is the schema in my database
and the table formation is
and the table demandedormation is
the problem is when I want to select the number of demands by name of formation
I execute this SELECT idformation,COUNT(idemploye) FROM demandeformation GROUP by idformation
but I get this
but what I want is the name of the formation instead of the idformation
thanks for advance
You need a join
SELECT a.idformation, b.formationlibelle, COUNT(a.idemploye)
FROM demandeformation a
INNER JOIN formation b on a.idformation = b.idformation
GROUP by a.idformation, b.formationlibelle
You just have your query a little backwards. Try this:
SELECT f.formationlibelle, count(df.idemployee)
FROM formation f
INNER JOIN demandeformation df on df.idformation = f.id_formation
GROUP BY f.idformation
Or you can group by formationlibelle, and if so be sure to add the field to your select statement.
I have troubles with execution sql
any time I execute it gives me an error Ambiguous column name 'salesYTD'
my statement is :
SELECT COUNTRYREGIONCODE, NAME, AVG(SALESQUOTA),AVG(BONUS), AVG(SALESYTD)
FROM SALES.SALESPERSON SP
INNER JOIN SALES.SALESTERRITORY ST
ON SP.TERRITORYID = ST.TERRITORYID
GROUP BY NAME, COUNTRYREGIONCODE;
the name of that column is correct. I don't understand what I am doing wrong. Thanks for any help
This means that SALESYTD is in both tables. I don't know which you want.
When you have more than one table in a query always qualify your column names.
SELECT ST.NAME, ST.COUNTRYREGIONCODE,
AVG(SP.SALESQUOTA), AVG(SP.BONUS), AVG(SP.SALESYTD)
FROM SALES.SALESPERSON SP INNER JOIN
SALES.SALESTERRITORY ST
ON SP.TERRITORYID = ST.TERRITORYID
GROUP BY ST.NAME, ST.COUNTRYREGIONCODE;
I'm just guessing where the columns come from.
Does that column exist in more than one table?
If so, you should name the field like this:
SP.salesYTD
or
ST.salesYTD
Depending on what you want to show.
Good luck.
I have 2 tables:
table 1:userdetails with fields:uid,mobile,name
table 2:accountdetails with fields:uid,savings,balance
Where uid is common and primary key in both tables.
Now Iam trying to get mobile,savings values from both tables where uid =1 how can we get.I tried below but didnt worked.
select mobile,savings
from userdetails,accountdetails
where userdetails.uid='1'AND
userdetails.uid = accountdetails.uid
Please can some one help
More modern version using the JOIN syntax:
SELECT
a.`mobile`,
b.`savings`
FROM `userdetails` a
JOIN `accountdetails` b
ON a.`uid` = b.`uid`
WHERE a.`uid` = 1
The query should probably look like this:
select ud.mobile, ad.savings
from userdetails ud left join
accountdetails ad
on ud.uid = ad.uid
where ud.uid = 1;
Notes:
Use proper, explicit JOIN syntax.
Use meaningful table aliases and qualify all columns names.
The left join keeps all rows, even if there is no match in the second table. That might be your problem.
I am assuming that uid is actually a number. Don't put numbers around numeric constants.
You could turn on your error display to show you exactly what line is causing the issue.
ini_set('display_errors', 1);
You can try this.
SELECT `ud`.`mobile`, `ad`.`savings`
FROM `userdetails` `ud`
INNER JOIN `accountdetails` `ad` ON `ud`.`uid` = `ad`.`uid`
WHERE `us`.`uid` = 1
Use join
select mobile,savings
from userdetails join accountdetails on userdetails.uid = accountdetails.uid
where userdetails.uid='1'
I need help with a complex select statement in SQL. I have these two table here:
Table user:
Table contacts_from_user:
When I make a select
SELECT name, vorname, gebdat, bezeichnung, wert
FROM user
JOIN contacts ON u_id = user_u_id
I get multiple lines for one user because he has more then one contact options but I need to put it in just one line:
The line should be looks like this:
name, vorname, gebdat, bezeichung_1, wert_1, bezeichnung_2, wert_2.......
How ca I do this?
Thanks a lot!
In pseudo-code, the best way to handle such scenarios is:
query = SELECT A.ID, A.stuff, B.stuff FROM A JOIN B ON A.ID = B.A_ID
results = run query
prev_A_ID = impossible_A_ID
for each result
if prev_A_ID not equal result_A_ID
create new A and set as current A
add B.stuff to current A
set prev_A_ID to result_A_ID
end for
I have been through a few other posts relating to my error, but none of the solutions seem to work. I'm fairly new to SQL so sorry if its something really simple. I have two tables
Movie Inventory - which has columns movie_title, onhand_qty, and replacement_price
NotFlix - which has subscriber_name, queue_nbr, and movie_title
I am trying to join the two tables to output the total replacement price cost per customer, but when I do it gives me the error titled above. Here is my code, thanks in advance for any help!
SELECT subscriber_name, SUM (replacement_price) as replacement
FROM
(SELECT NotFlix.subscriber_name, NotFlix.movie_title, NotFlix.queue_nbr, MovieInventory.replacement_price
FROM NotFlix
INNER JOIN MovieInventory
ON NotFlix.movie_title = MovieInventory.movie_title
)
GROUP BY subscriber_name;
You are missing an alias:
SELECT AliasNameHere.subscriber_name, SUM (AliasNameHere.replacement_price) as replacement
FROM
(SELECT NotFlix.subscriber_name as subscriber_name, NotFlix.movie_title, NotFlix.queue_nbr, MovieInventory.replacement_price as replacement_price
FROM NotFlix
INNER JOIN MovieInventory
ON NotFlix.movie_title = MovieInventory.movie_title
) AliasNameHere
GROUP BY subscriber_name;
I Just don't get why are you doing a temporary table in FROM clause, you could just do a basic INNER JOIN here and potientialy avoid problem with alias name :
SELECT NotFlix.subscriber_name, SUM (MovieInventory.replacement_price) as replacement
FROM NotFlix
INNER JOIN MovieInventory
ON NotFlix.movie_title = MovieInventory.movie_title
GROUP BY subscriber_name;