I need help to understand what I did wrong ... I'm a beginner so excuse me the simple question!
I have two tables in which I want to do a JOIN where, in one of the columns I had to use REPLACE to remove the text 'RIxRE' that does not interest me.
In table 1, this is the original text of the column id_notification: RIxRE-1787216-BSB and this is the text that returns when using REPLACE: 1787216-BSB
In column 2, this is the text that exists: 1787216-BSB
However, I get the following error:
# 1054 - Unknown column 'a.id_not' in 'on clause'
SELECT *, REPLACE(a.id_notificacao,'RIxRE','') AS id_not
FROM robo_qualinet_cadastro_remedy a
JOIN (SELECT * FROM painel_monitoracao) b ON a.id_not = b.id_notificacao
You cannot use a column alias again in the FROM clause or the WHERE clause after the SELECT (and possibly not other clauses as well, depending on the database).
So, repeat the expression:
SELECT *, REPLACE(a.id_notificacao, 'RIxRE', '') AS id_not
FROM robo_qualinet_cadastro_remedy rqcr JOIN
painel_monitoracao pm
ON REPLACE(rqcr.id_notificacao, 'RIxRE', '') = pm.id_notificacao;
Notes:
Use table aliases the mean something, such as abbreviations for the able names.
The subquery is not necessary in the FROM clause.
I suspect that you have a problem with your data model if you need a REPLACE() for the JOIN condition, but that is a different issue from this question.
Related
SELECT (SELECT STRING_VALUE
FROM EMP_NODE_PROPERTIES
WHERE NODE_ID=AN.ID ) containedWithin
FROM EMP_NODE AN
WHERE AN.STORE_ID = ALS.ID
AND an.TYPE_QNAME_ID=(SELECT ID
FROM EMP_QNAME
where LOCAL_NAME = 'document')
AND
AND AN.UUID='13456677';
from the above query I am getting below error.
ORA-01427: single-row subquery returns more than one row
so how to change the above query so that it should fetch comma separated values
This query won't return error you mentioned because
there are two ANDs and
there's no ALS table (or its alias).
I suggest you post something that is correctly written, then we can discuss other errors.
Basically, it is either select string_value ... or select id ... (or even both of them) that return more than a single value.
The most obvious "solution" is to use select DISTINCT
another one is to include where rownum = 1
or, use aggregate functions, e.g. select max(string_value) ...
while the most appropriate option would be to join all tables involved and decide which row (value) is correct and adjust query (i.e. its WHERE clause) to make sure that desired value will be returned.
You would seem to want something like this:
SELECT LISTAGG(NP.STRING_VALUE, ',') WITHIN GROUP(ORDER BY NP.STRING_VALUE)
as containedWithin
FROM EMP_NODE N
JOIN EMP_QNAME Q
ON N.TYPE_QNAME_ID = Q.ID
LEFT JOIN EMP_NODE_PROPERTIES NP
ON NP.NODE_ID = N.ID
WHERE Q.LOCAL_NAME = 'document'
AND AN.UUID = '13456677';
This is a bit speculative because your original query would not run for the reason explained by Littlefoot.
I am struggling with trying to apply a date filter to my query. I keep getting this error message
Conversion failed when converting the varchar value 'Collect_Date' to
data type int
Here is my code:
SELECT
Location_ID,
CONVERT(Date,CONVERT(varchar(10),Collect_Month_Key,101)) as 'Collect_Date',
Calc_Gross_Totals, Loc_Country,
CONVERT(varchar(8),Collect_Month_Key)+'-'+Location_ID as 'Unique Key'
FROM
FT_GPM_NPM_CYCLES,
LU_Location,
LU_Loc_Country
WHERE
LU_Location.LU_Loc_Country_Key=LU_Loc_Country.LU_Loc_Country_Key
AND FT_GPM_NPM_CYCLES.Lu_Loc_Key= LU_Location.LU_Loc_Key
AND Collect_Month_Key<>-1
AND 'Collect_Date'>=2016-1-1
ORDER BY
Location_ID,
Collect_Date;
If someone could help that would be appreciated. I am also getting a different error when I try to do the Month(Collect_Date). So if anyone knows why on that I would appreciate it. I have attched a picture with the code nd results I am getting.
I see whats going on, you are trying to use the alias in the select statement. You can't do that, There are a few other issues that have been covered in the comments, but here is the immediate answer to the question:
Select Location_ID
, Convert(Date,CONVERT(varchar(10),Collect_Month_Key,101)) as Collect_Date
, Calc_Gross_Totals
, Loc_Country
, CONVERT(varchar(8),Collect_Month_Key)+'-'+Location_ID as [Unique Key]
From FT_GPM_NPM_CYCLES
, LU_Location
, LU_Loc_Country
Where LU_Location.LU_Loc_Country_Key=LU_Loc_Country.LU_Loc_Country_Key
and FT_GPM_NPM_CYCLES.Lu_Loc_Key= LU_Location.LU_Loc_Key
and Collect_Month_Key <> -1
and Convert(Date,CONVERT(varchar(10),Collect_Month_Key,101)) >= '2016-1-1'
Order By Location_ID, Collect_Date;
Here is an updated query that brings following modifications:
As commented by Robert Sheahan, you cannot use a resultset column alias in the WHERE clause
As commented by Larnu, since you are storing dates as strings, you could simply do string comparaison to filter records (and return string values). With this technique, you do not need additional condition Collect_Month_Key <> -1, since string '-1' is not greater than string '20160101'.
use explicit joins instead of implicit joins (comment by Gordon Linoff)
I added table aliases : they make the query easier to read (and make it possible to self-join a table...)
I would also recommend to to prefix all columns being used in the query with their table alias. This clearly indicates from which table each column comes from, and makes the query easier to understand and maintain. NB: if Collect_Month_Key belongs to a table other than FT_GPM_NPM_CYCLES, you want to move the condition from the WHERE clause to the ON clause of the relevant JOIN)
Query:
SELECT
Location_ID,
Collect_Month_Key AS Collect_Date,
Calc_Gross_Totals,
Loc_Country,
CONVERT(varchar(8),Collect_Month_Key) + '-' + Location_ID AS Unique_Key
FROM
FT_GPM_NPM_CYCLES AS cyc
INNER JOIN LU_Location AS loc
ON cyc.Lu_Loc_Key = loc.LU_Loc_Key
INNER JOIN LU_Loc_Country AS cty
ON loc.LU_Loc_Country_Key = cty.LU_Loc_Country_Key
WHERE
Collect_Month_Key > '20160101'
ORDER BY
Location_ID,
Collect_Month_Key
To answer your comment "So if I don't put the collect_Date in the WHERE, where should I put it for something like this in the future?", I suggest Common Table Expressions. Functionally they are equivalent to defining a derived table in the FROM clause, but they move it "above" so it feels more like "before" and I think they make it much easier to read. To convert GMB's excellent solution to using a CTE:
--Leading ; because CTEs require prvious command terminated explicitly
;WITH cteWithDates as ( --cteDates becomes a virtual temporary table
SELECT
cyc.* --Keep all the original columns of FT_GPM_NPM_CYCLES
, Collect_Month_Key AS Collect_Date --and add Collect_Date and Unique_Key
, CONVERT(varchar(8),Collect_Month_Key) + '-' + Location_ID AS Unique_Key
FROM FT_GPM_NPM_CYCLES AS cyc
) --you could add more CTEs with the following format,
--all become available at the end
--, cteMore as (SELECT ... FROM ...)
--the first line after the closing ) has access to all CTEs, but ONLY that line
SELECT Location_ID,
Collect_Date,
Calc_Gross_Totals,
Loc_Country,
Unique_Key
FROM
cteWithDates AS cyc --Use the CTE as you would your original table,
--but the added fields are now available EVERYWHERE in your query!
INNER JOIN LU_Location AS loc
ON cyc.Lu_Loc_Key = loc.LU_Loc_Key
INNER JOIN LU_Loc_Country AS cty
ON loc.LU_Loc_Country_Key = cty.LU_Loc_Country_Key
WHERE
Collect_Date > '20160101' --NOW you can use CollectDate!
ORDER BY
Location_ID,
Collect_Date --And here too
Note that this is much more efficient than defining an actual temporary table with #TableName, because the query optimizer can drop unused records from the CTE but it has to put them all into the #temporary table, a huge performance difference if your table is large and the matching subset small.
I would like to know if is it possible to use the clause "with as" with a variable and/or in a block begin/end.
My code is
WITH EDGE_TMP
AS
(select edge.node_beg_id,edge.node_end_id,prg_massif.longueur,prg_massif.lgvideoupartage,prg_massif.lgsanscable from prg_massif
INNER JOIN edge on prg_massif.asset_id=edge.asset_id
where prg_massif.lgvideoupartage LIKE '1' OR prg_massif.lgsanscable LIKE '1')
,
journey (TO_TOWN, STEPS,DISTANCE,WAY)
AS
(SELECT DISTINCT node_beg_id, 0, 0, CAST(&&node_begin AS VARCHAR2(2000))
FROM EDGE_TMP
WHERE node_beg_id = &&node_begin
UNION ALL
SELECT node_end_id, journey.STEPS + 1
, journey.DISTANCE + EDGE_TMP.longueur,
CONCAT(CONCAT(journey.WAY,';'), EDGE_TMP.node_end_id
)
It create a string as output separated by a ; but i need to get it back as variable or table do you know how? I used a concat to retrieve data in a big string. Can i use a table to insert data
,
A need to use the result to proceed more treatment.
Thank you,
mat
No, WITH is a part of an SQL statement only. But if you describe why you need it in pl/sql, we'll can advice you something.
Edit: if you have SQL statement which produces result you need, you can assign it's value to pl/sql variable. There are several methods to do this, simpliest is to use SELECT INTO statement (add INTO variable clause into your select).
You can use WITH clause as a part of SELECT INTO statement (at least in not-too-very-old Oracle versions).
The following is my sql statement for a join in dB2.
select name, address, bloodgroup
from user_tb, health_tb
where user_tb.id = health_tb.id;
I am getting the following error:
"health_tb.id" is not valid in the context where it is used..
SQLCODE=-206, SQLSTATE=42703, DRIVER=4.12.79
I understand that one reason why I could be getting this error is because id may not exist in health_tb, but that is not the case. I hope someone can advise. Thank you.
First, you should learn to use modern join syntax, although this has nothing to do with your problem:
select name, address, bloodgroup
from user_tb join
health_tb
on user_tb.id = health_tb.id;
A simple search on Google pointed me to the documentation for this error. One of the first things it mentions is:
Possible reasons for this error include:
The specified column is not a column of any of the source or target
tables or views of the statement.
In a SELECT or DELETE statement, the specified column is not a column of any of the tables or views that are identified in a FROM
clause in the statement.
A column list of an SQL data change statement specified the name of a column of the target table or view of the statement.
I suspect that the id column is really called something like user_id. The working query might look like:
select name, address, bloodgroup
from user_tb join
health_tb
on user_tb.id = health_tb.user_id;
1) check if the id column in both tables have the same data type
2) check if there is any trailing space in the column name
select '<' || column_name || '>' from user_tab_columns
where tbname = 'health_tb'
If the id columns are defined as different types, that could be a problem.
Error: Only one expression can be specified in the select list when the subquery is not introduced with EXISTS.
I understand this error, but I don't know how to rewrite the query to avoid it. I'm looking for records with duplicate values in f1, f2, and f3 based on the timestamp of the file they were imported from. The records not in the subquery should be modified as indicated. I don't need the import_file_timestamp in my results but I believe I have to include it to select the proper version of the record. The subquery, by itself, returns the correct information. How do I do this?
update import_raw_records
set raw_record_status = 'I'
from import_raw_records
where f1+f2+f3 NOT IN (
select a.f1+a.f2+a.f3,
max(b.import_file_timestamp)
from import_raw_records a
inner join import_files b
on a.import_file_id = b.import_file_id
group by a.f1+a.f2+a.f3)
Thanks,
John