I need to create two table-type variables in oracle and make inner join between them.
I can't create temporary table in the source database because I dont have privileges.
How to create an anonymous plsql block in oracle something relative to this code in SQL server?
DECLARE #TB_PROJETO TABLE
(
ID INT,
NAME NVARCHAR(MAX)
)
DECLARE #TB_CAMERA TABLE
(
ID INT,
NAME NVARCHAR(MAX),
PROJETOID INT
)
BEGIN
INSERT INTO #TB_PROJETO
SELECT [ProjetoId], [Nome] FROM [dbo].[TbProjeto]
INSERT INTO #TB_CAMERA
SELECT [CameraId], [Nome],[ProjetoId] FROM [dbo].[TbCamera]
SELECT * FROM #TB_PROJETO P INNER JOIN #TB_CAMERA C ON P.ID = C.PROJETOID
END
The use of table variables is very common in SQL Server but Oracle doesn't have them because Oracle is pretty good at efficiently joining tables. So in Oracle the equivalent of your T-SQL routine would just be this:
SELECT c.ProjetoId
, p.Nome as project_nome
, c.CameraId
, c.Nome as camera_nome
FROM TbProjeto p
inner join TbCamera c
ON P.ID = C.PROJETOID
Column aliasing optional but done for clarity
Related
I am trying to create stored procedure where I want to join two tables and save the result into one of the tables, but I am getting INTO clause is required error.
This is my code:
CREATE PROCEDURE DiorItemMaster
AS
SELECT *FROM pcdo_dior_item_master
INNER JOIN pcdo_itemdata on pcdo_itemdata.vpn = pcdo_dior_item_master.vpn;
GO;
ERROR:
Error(4,1): PLS-00428: an INTO clause is expected in this SELECT statement
You have a query that selects columns from a table in your pl/sql block. What do you want to do with the result of that query ? You cannot just select and not do anything with the results in pl/sql (you can in sql). Oracle expects that you to store the results of that select in variables. That can be done using the SELECT INTO clause.
Example (based on sample schema emp/dept):
DECLARE
l_emp emp%ROWTYPE;
BEGIN
SELECT e.* INTO l_emp FROM emp e WHERE e.ename = 'KING';
END;
/
Note that you can SELECT INTO individual columns and into rows. You cannot use SELECT INTO arrays.
A couple of other remarks about your code:
You perform a SELECT * from a table with a join to another table without using aliases. This will return all columns from both tables. It is a lot more readable to prefix the "*" with a table alias like in the example.
The GO; is not part of the oracle syntax - this will cause a compilation error.
I am using Toad for oracle 12c. I need to copy a table and data (40M) from one shcema to another (prod to test). However there is an unique key(not the PK for this table) called record_Id col which has something data like this 3.000*******19E15. About 2M rows has same numbers(I believe its because very large number) which are unique in prod. When I try to copy it violets the unique key of that col. I am using toad "export data to another schema" function to copy the data.
when I execute query in prod
select count(*) from table_name
OR
select count(distinct(record_id) from table_name
Both query gives the exact same numbers of data.
I don't have DBA permission. How do I copy all data without violating unique key of the table.
Thanks in advance!
You can use UPSERT for decisional INSERT or UPDATE or you may write small procedure for this.
you may consider to use NOT EXISTS, but your data is big and it might not be resource efficient.
insert into prod_tab
select * from other_tab t1 where NOT exists (
select 1 from prod_tab t2 where t1.id = t2.id
);
In Oracle you can use a MERGE query for that.
The following query proceeds as follows for each data row :
if the source record_id does not yet exist in the target table, a new record is inserted
else, the existing record is updated with source values
For the sake of the example, I assumed that there are two other columns in the table : column1 and column2.
MERGE INTO target_table t1
USING (SELECT * from source_table t2)
ON (t1.record_id = t2.record_id)
WHEN MATCHED THEN UPDATE SET
t1.column1 = t2.column1,
t1.column2 = t2.column2
WHEN NOT MATCHED THEN INSERT
(record_id, column1, column2) VALUES (t2.record_id, t2.column1, t2.column2)
I'm trying to replace a giant IN clause (hundreds of values) with a JOIN for performance reasons, so I created a global temp table (Oracle) hoping that may be a viable alternative:
CREATE GLOBAL TEMPORARY TABLE TMP_USER_GUID (
user_guid varchar(20)
)
ON COMMIT DELETE ROWS
When I run my sql manually, it works fine:
INSERT ALL
INTO ent.tmp_usr_guid VALUES ('00JD49W7IJ93ZU5MBWBQ')
-- as many INTO statements as I would have IN parameters
SELECT * FROM DUAL;
SELECT u.guid, u.first_name, u.last_name, ...
FROM usr u
JOIN ...
JOIN ...
JOIN tmp_usr_guid tug ON u.guid = tug.usr_guid
When I try running it as a native sql statement using Hibernate (5.2.12.FINAL) it throws:
org.hibernate.QueryException: unexpected char: ';' [INSERT ALL INTO
ent.tmp_usr_guid VALUES ('00JD49W7IJ93ZU5MBWBQ') SELECT * FROM DUAL;
SELECT u.guid,
Any thoughts on the correct approach to take?
I want to make something like this work in proc sql:
proc sql;
%connect_to_sql_macro;
create table sql.table as
(
select some_id, date from connection to oracle
(
select some_id, date, row_number()over(partition by some_id order by date) as row from dataset d join sql_table s on d.some_id=s.some_id
) where row=1
Basically i need to create table in oracle based on dataset joined with oracle table and take the first date for each id.
If i use "from oracle" pass through it doesn't see the dataset, if i make it the other way around i can't use window functions(row_number()) becouse they are not in SAS. For now i create a table from that dataset and then do a pass through but it's large and i need to do it in one go. Any suggestions?
You're probably better off doing it in SAS.
Can be done in one step too
libname lib <oracle connection options>;
proc sql;
select some_id
,date
from dataset d
inner join lib.sql_table s
on d.some_id=s.some_id
group by some_id
having date=min(date)
;
quit;
or
proc sql;
%connect_to_sql_macro;
select some_id
,date
from dataset d
inner join (select * from connection to oracle (
select * from sql_table
)
) s
on d.some_id=s.some_id
group by some_id
having date=min(date)
;
quit;
Also, limit as much as you can the amount of records that are being read from the oracle table.
Given the syntax:
CREATE [OR REPLACE] FUNCTION [Owner.]FunctionName
[(arguments [IN|OUT|IN OUT][NOCOPY] DataType [DEFAULT expr][,...])]
RETURN DataType [InvokerRightsClause] [DETERMINISTIC]
{IS|AS}
I think my query is syntactically correct, but for some reason, I get these errors during compilation:
Error(6,5): PL/SQL: SQL Statement ignored
Error(8,34): PL/SQL: ORA-00942: table or view does not exist
CREATE or replace FUNCTION aCombinationMismatches(p_column1 IN VARCHAR2)
RETURN Number
IS
duplicate_count NUMBER(4,0);
BEGIN
select count(*) into duplicate_count
from schema1.tableA a
inner join schema1.tableB b
on a.b_id = b.id and a.column1 = p_column1
group by a.b_id, a.column1, a.column2, b.column1, b.column2, b.column3;
return duplicate_count;
END;
Anyone see anything wrong with my query above?
Also I'd like to how to set this UDF up to be used to create a CHECK constraint. How exactly do I specify the param: p_param1 to the function assuming this is the value of a field column1 in a row that a user is trying to insert? I just don't want the user to insert a record into tableA that consists of duplicate combinations of fields across tables: tableA and tableB.
Note: The tables tableA and tableB do exist - a select query like below indicates it. So the error above is rather confusing to me, I must add. (All table and column names in the two queries were found/replaced with dummy values.)
select count(*)
from schema1.tableA a
inner join schema1.tableB b
on a.b_id = b.id
group by a.b_id, a.column1, a.column2, b.column1, b.column2, b.column3;
Output:
Count(*)
OK, you already know that you have problem with priviliges. I wanted to add that you won't be able to create CHECK constraint basing on your function. According to documentation:
The condition of a check constraint can refer to any column in the table, but it cannot refer to columns of other tables.
Conditions of check constraints cannot contain the following constructs:
Subqueries and scalar subquery expressions
Calls to the functions that are not deterministic (CURRENT_DATE, CURRENT_TIMESTAMP, DBTIMEZONE, LOCALTIMESTAMP, SESSIONTIMEZONE, SYSDATE, SYSTIMESTAMP, UID, USER, and USERENV)
Calls to user-defined functions
So to achieve what you want, you would have to define some triggers, or make use of some combination of MATERIALIZED VIEW and CHECK constraint. See for example this discussion on Ask Tom
You probably have access to TableA and TableB through a Role. This means that you can query the table, but you cannot create a procedure that reads or writes that table. In order to compile your procedure you should at least grant select on the table to your user.
In the link below you'll find more info
https://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1065832643319