The execution of the following statement:
SELECT SUM(p.price)
FROM Product p
via JDBC on an embedded H2 database throws exception:
org.h2.jdbc.JdbcSQLException: Column "price" not found
[42122-193]
How can I make it work?
You have to use an alias for the column used in SUM():
SELECT SUM(p.price) as price
FROM Product p
Beware! The alias has to be named exactly as the column.
Related
I am a complete beginner to BigQuery, and I am trying to create an inner join between two table names, where the column 'title' is the joining column. I believe my syntax is correct, but I do not know what I am doing wrong when I input the ON clause. Here is my syntax:
SELECT
*
FROM
book-to-film-adaptations.movies.movies_metadata_relevant
JOIN
book-to-film-adaptations.goodreads_books.goodreads_books_relevant_data
ON
movies_metadata_relevant.title = goodreads_books_relevant_data.title
I get this error message: Unrecognized name: movies_metadata_relevant at [8:3]
I have tried it with the full names (book-to-film-adaptations.movies.movies_metadata_relevant), but then I get an error message: "Syntax error: Unexpected keyword TO"
Any suggestions?
Thanks
You need to alias tables and use those like in below example - but in this case you will need
...
...
FROM
`book-to-film-adaptations.movies.movies_metadata_relevant` t1
JOIN
`book-to-film-adaptations.goodreads_books.goodreads_books_relevant_data` t2
ON
t1.title = t2.title
or if join columns have same name (like in your case) you can use below version
...
...
FROM
`book-to-film-adaptations.movies.movies_metadata_relevant` t1
JOIN
`book-to-film-adaptations.goodreads_books.goodreads_books_relevant_data` t2
USING (title)
I have two table which I want to select Name from t2.
The situation is following.
I have t1 Policy which containt EmployeeID
And table t2 which containt Name
Now I want to select which Employee release policy.
So in t1(Policy- AUTO.POL) I have column: SIFRA_RAD
and t2(Employee-AUTO.SIFRAD) I have colum: SIFRA_R, Ime
I try something like this:
select auto.pol.sifra_rad, auto.sifrad.ime
from auto.sifrad
inner join auto.pol on auto.sifrad.ime = auto.pol.sifra_rad;
After that I get error
ORA-00933: SQL command not properly ended
I have no idea what is wrong here. Any suggestion?
The problem comes from query, and we fix it
select p.sifra_rad, s.ime from auto.sifrad s, auto.pol p where s.ime = p.sifra_rad
In hive,
I am trying to select the entry with the minimum timestamp, however it's throwing the following error, not sure what is the reason.
select * from sales where partition_batch_ts = (select max(partition_batch_ts) from sales);
Error
Error while compiling statement: FAILED: ParseException line 1:91 cannot recognize input near 'select' 'max' '(' in expression specification
I think you need to use proper table alias. Also, IN must be used instead of =
SELECT s1.*
FROM sales s1
WHERE s1.partition_batch_ts IN
(SELECT MAX(partition_batch_ts)
FROM sales s2);
From Hive manual, SUBQUERIES :
As of Hive 0.13 some types of subqueries are supported in the WHERE
clause.
post_code is a primary key in the location table and foreign key in job. I am trying to join them, could anyone help.
SELECT job.start_date, job.cust_id, job.veh_id, location.post_code, location.country_name_location
FROM job
INNER JOIN location job.post_code ON location.post_code AND country_name_location = 'France';
SQL Error: ORA-00905: missing keyword
00905. 00000 - "missing keyword"
*Cause:
*Action:
Your ON is in the wrong position:
SELECT job.start_date, job.cust_id, job.veh_id, location.post_code, location.country_name_location
FROM job
INNER JOIN location ON job.post_code = location.post_code AND country_name_location = 'France';
There is an error in your syntax. The ON keyword is meant to come after you specify the table you are joining with. So the correct query would be:
SELECT job.start_date, job.cust_id, job.veh_id, location.post_code, location.country_name_location
FROM job
INNER JOIN location ON job.post_code = location.post_code AND country_name_location = 'France';
I got the below error in hive while I am executing the hql like this.
Select a.col,b.col from tab a left join tab b on a.id =b.id and a.code in
(Select c.code from tab c where c.id=123 and c.dec='123a');
Note: c.id is pk and c.dec is unique id
Error: semantic in exception 0 children returned.
Can any one help to resolve the above issue.
I think this is happening because you are using a MySQL reserved keyword "desc" as your column name. So you can change it and try again.
You can refer to this link for the list of all the reserved keywords for MySQL :https://dev.mysql.com/doc/refman/5.5/en/keywords.html