I have a saved query (MyUnion) for a union, appending monthly files (linked views):
select * from RawTrade1801
union all
select * from RawTrade1802
Trying to write this to a new table is proving problematic:
SELECT MyUnion.* into RawTrade2
FROM MyUnion
WHERE Field8 = 'ZAR';
I get an error: Cannot open database "
My aim is to once a month create a master table by appending every monthly file.
The following steps should generate a table from your UNION query:
Create a new query. In the SQL View, now type:
SELECT * FROM (SELECT * FROM RawTrade1801
UNION ALL
SELECT * FROM RawTrade1802);
Save the query. In its Design View click the Make Table button. Type in the table name (e.g. NewTable) that you want the output of this query to be.
Save and close the query.
The query icon will have changed. Double click on it and it should generate your table.
Access actually changes the SQL to
SELECT * INTO NewTable FROM
(SELECT * FROM RawTrade1801
UNION ALL
SELECT * FROM RawTrade1802) AS [%$###_Alias];
when you view the SQL after step 4.
Try using INSERT INTO ... SELECT:
INSERT INTO RawTrade2
SELECT * FROM RawTrade1801 WHERE Field8 = 'ZAR'
UNION ALL
SELECT * FROM RawTrade1802 WHERE Field8 = 'ZAR';
Of course, even if this works it still does not explain why your original query does not work. I expect it is a slight technical problem, though I don't know enough Access to see it immediately.
Create the Union query, save it with the name like 'qUnion'.
From menu open:
Create-->Query--> Make Table.
In Add Table Menu chose "Queries" and
Add your union query ('qUnion').
Select the fields that you need.
Open query.
Anew table will be created.
Related
I have an oracle query that uses a created table as part of the code. Every time I need to run a report I delete current data and import the new data I receive. This is one column of id's. I need to create a report on SSRS in which the user can input this data into said table as a parameter. I have designed a simple report that they can enter some of the id's into a parameter, but there may be times when they need to enter in a few thousand id's, and the report already runs long. Here is what the SSRS code currently says:
select distinct n.id, n.notes
from notes n
join (
select max(seq_num) as seqnum, id from notes group by id) maxresults
on n.id = maxresults.ID
where n.seq_num = maxresults.seqnum
and n.id in (#MyParam)
Is there a way to have MyParam insert data into a table I would join called My_ID, joining as Join My_Id id on n.id = id.id
I do not have permissions to create functions or procedures in the database.
Thank you
You may try the trick with MATERIALIZE hint which normally forces Oracle to create a temporary table :
WITH cte1 AS
( SELECT /*+ MATERIALIZE */ 1 as id FROM DUAL
UNION ALL
SELECT 2 DUAL
)
SELECT a.*
FROM table1 a
INNER JOIN cte1 b ON b.id = a.id
I have have two schemas with the same table. e.g schema1.adress and schema2.adress.
Both tables are identical.
Layout of table customer:
customerno: integer
name: varchar2(50)
Now I want to get the customers of schema 1 using something like
"select * from customer where schemaname = 1" or
"select * from customer where schemaname = 2"
Is there a mechanism in Oracle that can switch the schema depending on a criteria in a select-statement?
Before you ask: for a new project I have to query legacy schemas. I cannot change the schema, but I can set any permission on the schema / user.
Any ideas?
Thanks for any response,
Sven
You could create a private synonym for the user for the schema.table you want them to access,
create synonym user1.customer for schemaname1.customer;
create synonym user2.customer for schemaname2.customer;
Then your queries would always just be select * from customer;
So you are logged in as the same user both when you want to select from schema1.customer and select from schema2.customer?
A possible way can be something like:
select *
from (
select 'schema1' schema$name, c.* from schema1.customer c
union all
select 'schema2' schema$name, c.* from schema2.customer c
)
where schema$name = 'schema1'
If you can create views, it can be an idea to create a view like:
create or replace view customer_view as
select 'schema1' schema$name, c.* from schema1.customer c
union all
select 'schema2' schema$name, c.* from schema2.customer c
That makes it possible to do:
select *
from customer_view
where schema$name = 'schema1'
Whether you use view or not, Oracle optimizer can in most cases like this push the predicate "where schema$name = 'schema1'" into the UNION ALL and then it recognizes that it does not need to access schema2.customer at all.
I have an issue with using Oracle's union and order by clauses together.
I have two complex queries (with sub queries in them) having an order by clause for each of them. I need to union the output of both and return the result. When I run it, I am getting the error ORA-00933: SQL command not properly ended.
But it works when I comment out the order by clauses in both of them.
To test this, I created a simple query as simple as shown below
select * from employee where employee_id=2 order by name
union
select * from employee where employee_id=3 order by name;
Even this gave the same error when ran with order by clauses but runs well when I commentout the order by clauses.
I tried searching forums, but I could not get solution for the exact problem. I found one at ORACLE Query with ORDER BY and UNION but As my queries are already too complecated because of subqueries and joins between too many tables, I dont want to implement this.
Can someone help me on fixing the root cause of the issue.
try this code:
select e1.name name /* e1.* */
from employee e1
where employee_id = 2
union
select
e2.name name /* e2.* */
from employee e2
where employee_id = 3
order by name;
if you want to order the result of first query then to order the result the second query so you can do like this:
select 1 query, e1.name name /* e1.* */
from employee e1
where employee_id = 2
union
select
2 query, e2.name name /* e2.* */
from employee e2
where employee_id = 3
order by query, name;
You can have only one ORDER BY when combining multiple queries, on the last statement. The ORDER BY clause acts on the entire set.
See the Oracle Documentation:
You cannot specify the order_by_clause in the subquery of these operators.
If you want order by in each query you must wrap it in other select as a subquery:
select * from (select * from employee where employee_id=2 order by name)
union
select * from (select * from employee where employee_id=3 order by name);
I have a query like below - table names etc. changed for keeping the actual data private
SELECT inv.*,TRUNC(sysdate)
FROM Invoice inv
WHERE (inv.carrier,inv.pro,inv.ndate) IN
(
SELECT carrier,pro,n_dt FROM Order where TRUNC(Order.cr_dt) = TRUNC(sysdate)
)
I am selecting records from Invoice based on Order. i.e. all records from Invoice which are common with order records for today, based on those 3 columns...
Now I want to select Order_Num from Order in my select query as well.. so that I can use the whole thing to insert it into totally seperate table, let's say orderedInvoices.
insert into orderedInvoices(seq_no,..same columns as Inv...,Cr_dt)
(
SELECT **Order.Order_Num**, inv.*,TRUNC(sysdate)
FROM Invoice inv
WHERE (inv.carrier,inv.pro,inv.ndate) IN
(
SELECT carrier,pro,n_dt FROM Order where TRUNC(Order.cr_dt) = TRUNC(sysdate)
)
)
?? - how to do I select that Order_Num in main query for each records of that sub query?
p.s. I understand that trunc(cr_dt) will not use index on cr_dt (if a index is there..) but I couldn't select records unless I omit the time part of it..:(
If the table ORDER1 is unique on CARRIER, PRO and N_DT you can use a JOIN instead of IN to restrict your records, it'll also enable you to select whatever data you want from either table:
select order.order_num, inv.*, trunc(sysdate)
from Invoice inv
join order ord
on inv.carrier = ord.carrier
and inv.pro = ord.pro
and inv.ndate = ord.n_dt
where trunc(order.cr_dt) = trunc(sysdate)
If it's not unique then you have to use DISTINCT to deduplicate your record set.
Though using TRUNC() on CR_DT will not use an index on that column you can use a functional index on this if you do need an index.
create index i_order_trunc_cr_dt on order (trunc(cr_dt));
1. This is a really bad name for a table as it's a keyword, consider using ORDERS instead.
I have a problem while creating views with a procedure, because the Oracle ignores the order of columns I specified.
I create the text of the command for creating view in a loop (in every loop one view), at the end of view I execute EXECUTE IMMEDIATE textOfCommand;
I tried to add /*+ORDERED */ before select but this did not help. (I also tried to run the queries directly, not from procedure)
The generated command itself is good, also column_id is good, but it is ignored in oracle developer or in geomedia. I think this will be something with optimization of the query, because there are several joins in the query.
I just cannot understand why it is so unpredictable, The order is sometimes good, sometimes not (if I run the same command several times) it doesn't depend on view, it is absolutely random, and I cannot figure out what is the reason.
If you have any idea, please share it. Thanks
EDIT :
I have a problem with the order of columns (not rows) that are shown in oracle developer and also geomedia. When I click the tab 'Columns' in Oracle developer, a can see all the columns of view with good COLUMN_ID, but they are not ordered by this column. I thought it was just the way, that the oracle developer displays it, but also other software has a problem with it. If I run the select command, the order is good. I wouldn't mind the order in oracle developer, but the problem is the customer's software (geomedia).
here is an examle of generated sql that is created by procedure and then run by EXECUTE IMMEDIATE command at the end of each loop in procedure. :
(there is something about 100 such a views. Tables, columns and orders is taken from one configuration table, that specifies all this. And I use GDOSYS.GPICKLISTS to identify FK and tables that should be joined)
CREATE OR REPLACE FORCE VIEW "SOME_VIEW" AS
SELECT /*+ORDERED */ a.ID AS "ID",
a8.TEXT_EN AS "COLUMN_NAME_1",
a.COLUMN_NAME_2 AS "COLUMN_NAME_2",
a.COLUMN_NAME_3 AS "COLUMN_NAME_3",
to_char(a.COLUMN_NAME_4,'yyyymmdd') AS "COLUMN_NAME_4",
to_char(a.COLUMN_NAME_5,'yyyymmdd') AS "COLUMN_NAME_5",
to_char(a.COLUMN_NAME_6,'yyyymmdd') AS "COLUMN_NAME_6",
to_char(a.COLUMN_NAME_7,'yyyymmdd') AS "COLUMN_NAME_7",
a.COLUMN_NAME_8 AS "COLUMN_NAME_8",
a.COLUMN_NAME_9 AS "COLUMN_NAME_9",
a.COLUMN_NAME_10 AS "COLUMN_NAME_10",
to_char(a.COLUMN_NAME_11,'yyyymmdd') AS "COLUMN_NAME_11",
a9.TEXT_EN AS "COLUMN_NAME_12",
a10.TEXT_EN AS "COLUMN_NAME_13",
a.COLUMN_NAME_14 AS "COLUMN_NAME_14",
a11.TEXT_EN AS "COLUMN_NAME_15",
FROM SOME_TABLE a
LEFT JOIN IENC.TABLE1 a8 on a8.id = a.COLUMN_NAME_1
LEFT JOIN IENC.TABLE2 a9 on a9.id = a.COLUMN_NAME_12
LEFT JOIN IENC.TABLE3 a10 on a10.id = a.COLUMN_NAME_13
LEFT JOIN IENC.TABLE4 a11 on a11.id = a.COLUMN_NAME_15
I assume what is "unpredictable" is something like
SELECT column_name, data_type, column_id
FROM user_tab_cols
WHERE table_name = 'SOME_VIEW';
If you want to order rows by some column, you must explicitly add ORDER BY clause.
SELECT column_name, data_type, column_id
FROM user_tab_cols
WHERE table_name = 'SOME_VIEW'
ORDER BY column_id;
Try without the double quote for the columns' name.
SELECT /*+ORDERED */ a.ID AS "ID", => SELECT /*+ORDERED */ a.ID AS ID,