Selecting and joining differnent tables based on columns populated
I have a table for audit purpose
Table paudit
pauditid (NOT NULL)
operationid (NOT NULL)
typeid (NOT NULL) -- Electronics, furniture, entertainment, department
operatorid (NOT NULL)
electronicsid
furnitureid
entertainmentid
departmentid
location (NOT NULL)
changeto
changefrom
memberelectronicsid
memberfurnitureid
memberentertainmentid
memberdepartmentname
paudittime
deptfrom
deptto
operatorname name type operation location deptfrom deptto membername
operatorname1 name1 Electronics install abcbcbcb
name2 furniture uninstall nnddnd
name3 furniture move jdjdj abc def
entertainment product_add gjhg adfgfgffdg
entertainment product_del gfhfghj dgfdfgdfgf
Operatorname2As you can see, based on the typeid and operationid differnt columns get populated. But the proble is that is all these columnid's have to be joined to the resipective tables to get the names and the result will have be all consolidated into a single column. Like the column "name", in the sample above, to get the name, based on the type, would have to be joined with 4 differnt tables to get the "name". Based on the "operation" 3 diffent tables would have to joined to get the "membername". Hope this is clear.
I was thinking about using "With as" and "parition by". But I got confused. So I would like some one to help me out if they have done something similar or point me in the right direction.
Also these reports could be run for long periods of time or often and hence performance is also important.
Well one of the main reason this was done was to enforce foreign keys when it comes to using ids and referring from other tables and the columns were split based on the produt type.
pauditid operationid operatorid electronicsid furnitureid entertainmentid departmentid location changeto changefrom memberelectronicsid memberfurnitureid memberentertainmentid memberdepartmentname paudittime deptfrom deptto typeid
41 2 3 74 UYWZrKifzeVVGJzhocmh 1
42 3 3 66 ngqmfBaagQyLMTXNjjju 2
43 2 13 9 NnLBvOJjZAPJFtkJLQcg 3
44 4 13 16 NRYMhvySvbrsiuLKAgfH 4
45 2 7 10 hZAMQcoGeeMXjrNcfBsH 1
46 4 50 11 vKswkxnfNnRkcKkFxanP 2
47 3 13 4 opBYnyQLArRwxOQTURww 3
48 1 22 14 SaGoHjQGtlMQjjOzfFEO 4
49 4 41 53 DaPXkQVAZOvqgWPXFlEi 1
108 1 13 14 OfYVYvhBJpwExyfrIDux 4
109 4 6 81 GODUpaejHEdpcOGTYGsF iSHTF aJtmf 1
110 2 21 88 cpOVLkRuZtaMlLgKmCXz MIMoN NcFwD 2
111 1 32 36 DyaqlSglgvDTzQMMQmsa gipDq bIoTb 3
112 4 47 48 ncwzqYjSCgIcBaeOxXkk XVuZi fEuYj 4
113 1 33 62 PzHlvjpYjJkPhFYfZDzN ryVIB tPHoA 1
114 4 46 16 jnVNDWHuUnDAyOFItlaD EoRsW tkkYU 2
115 4 43 45 lvJvmTYmQrwkNJnBirEX MAFgG xbqym 3
116 4 25 98 JtBYgfCSAoBafXbcovhr yDstl llGPL 4
186 7 3 2 kvymkGFDPsPcqtRqmdFF 32 3
187 8 18 6 YcwhKhgRdMlUspaLlGWj 50 3
188 7 19 8 EGtVVpNJYuUunmUsEBxj jrCYkboqxXadjqDgWuaB 3
189 7 4 8 gcuEqHTTJspnohiLSNom 15 3
190 8 12 13 KgvuLHNQLmHOruIzpNOR 33 3
191 7 8 24 jjNJseqqIqzCPgkUfxBg 55 3
192 8 6 5 bDEYJnZtQJEDlDHUcGQG bsTVKQxsQaGKmShBRPkZ 3
193 8 3 4 AkroIDSnEkfdlTCRZOfE 7 3
241 9 8 19 vbrGYWcdrTbCQdtGAVlZ 15 6 1
242 9 7 13 AoKZgAtBkkvXqFwcpZQl 25 10 2
243 9 16 14 CEKuwaMwPCfEXWecDXaG 17 20 3
244 9 17 20 uCLddsBDtVTdbGxAmbcN 14 14 4
245 9 3 22 wrsiJORxHWXaTNzIXziy 14 14 1
246 9 14 20 zCULRoirtEMnHSAArrEu 10 24 2
247 9 5 6 bKLEEijvtNuaCApBajNa 16 1 3
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I want a table like this.
I want to insert Data column value based on Id and Name Columns
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Hi All,
I have a requirement where I have to join 2 tables based on the functions TO_DATE,TRIM,UPPER.
I have Date Of Birth, Person Name . So I have to use these functions and then join in the RPD.
Is it possible to achieve. I am stuck in this problem.
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KrishnaHi Dann,
Thanks for your reply. I had tried adding these functions but I get the error 'Only columns,designated predicates and operators are allowed". Niether in the Business not in the Physical layer we are allowed
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Select and join one month record
I receive a request from my customer . He want generate a total sales record for a month and those data stored in daily sales table and customer table.
tblcustomer-20140101
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tblcustomer-20141231
tblsales-20140101
tblsales-20140102
tblsales-20140103
tblsales-20141231
is there anyway when user select month name from application(ex: April), it will choose all april record and join it together?Hi kjleong,
Generally to say, it is not a good practice to store the same entity data individually for each day, there are many shortages, such as the problem you posted in this thread. You can put all of them into one table and tag them with a DATE column. Anyway
in this case, to achieve your requirement, you may refer the below stored procedure(SP).
CREATE PROC ProcGetSales
@Year VARCHAR(20),
@Month VARCHAR(20)
AS
DECLARE @Date DATE;
DECLARE @Days INT;
DECLARE @SqlStr NVARCHAR(MAX);
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create a temp table
CREATE TABLE #Temp
col1 int --you should put the columns after join in your real envrioment here
table join statement, put the join result into a temp table
I dont know the columns so I use * here and the join condition is just based on assumption
you should modify the statement basing on your real environment
SET @SqlStr= 'INSERT INTO #Temp SELECT * FROM [tblcustomer-WhichDay] tc JOIN [tblsales-WhichDay] ts ON tc.customerID = ts.customerID';
DECLARE @Counter INT = 1;
WHILE @Counter <= @Days --loop the tables named after the specific month
BEGIN
DECLARE @Sql NVARCHAR(MAX) = REPLACE(@SqlStr,'WhichDay',CONVERT(VARCHAR(8),CAST(@Year+'-'+@Month+'-'+LTRIM(STR(@Counter)) AS DATE),112));
EXEC sp_executesql @Sql;
SET @Counter = @Counter+1;
END
SELECT * FROM #TEMP
The SP is not ready to use, you have to make some modification basing on your real environment before it works.
If you have any question, feel free to let me know.
Best regards,
Eric Zhang
If you have any feedback on our support, please click
here. -
Hi
I want to know when is good to do join between 2 tables
or to do select and loop and in the loop select single
When it good to use for all entries
Thanks
have a nice dayHi
JOIN is faster to fetch the data from database tables provided they have some connecting fields in both tables
for all entries
The WHERE clause of the SELECT statement has a special variant that allows you to derive conditions from the lines and columns of an internal table:
SELECT ... FOR ALL ENTRIES IN <itab> WHERE <cond> ...
<cond> may be formulated as described above. If you specify a field of the internal table <itab> as an operand in a condition, you address all lines of the internal table. The comparison is then performed for each line of the internal table. For each line, the system selects the lines from the database table that satisfy the condition. The result set of the SELECT statement is the union of the individual selections for each line of the internal table. Duplicate lines are automatically eliminated from the result set. If <itab> is empty, the addition FOR ALL ENTRIES is disregarded, and all entries are read.
The internal table <itab> must have a structured line type, and each field that occurs in the condition <cond> must be compatible with the column of the database with which it is compared. Do not use the operators LIKE, BETWEEN, and IN in comparisons using internal table fields. You may not use the ORDER BY clause in the same SELECT statement.
You can use the option FOR ALL ENTRIES to replace nested select loops by operations on internal tables. This can significantly improve the performance for large sets of selected data.
Select single and Upto 1 rows
Difference Between Select Single and Select UpTo One Rows
According to SAP Performance course the SELECT UP TO 1 ROWS is faster than SELECT SINGLE because you are not using all the primary key fields.
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The best way to find out is through sql trace or runtime analysis.
Use "select up to 1 rows" only if you are sure that all the records returned will have the same value for the field(s) you are interested in. If not, you will be reading only the first record which matches the criteria, but may be the second or the third record has the value you are looking for.
The System test result showed that the variant Single * takes less time than Up to 1 rows as there is an additional level for COUNT STOP KEY for SELECT ENDSELECT UP TO 1 ROWS.
The 'SELECT SINGLE' statement selects the first row in the database that it finds that fulfils the 'WHERE' clause If this results in multiple records then only the first one will be returned and therefore may not be unique.
Mainly: to read data from
The 'SELECT .... UP TO 1 ROWS' statement is subtly different. The database selects all of the relevant records that are defined by the WHERE clause, applies any aggregate, ordering or grouping functions to them and then returns the first record of the result set.
Mainly: to check if entries exist.
Reward points for useful Answers
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Anji -
Using functions in select statement(joining 5 tables) taking long time in Oracle
Hi,
I have created a query in oracle which joins 5 tables and uses two functions(function names are 'ca_concat' and 'ca_concat_noseq').
Query takes approximately 40 secs to execute around 12000 records. If I remove the functions from query it excutes within a second..
Note : I have used the oracle SQL Developer for testing the query.
It would be appriciated if anybody helps me to improve the perfomance of the query.
Below are the querie with and without functions:
1. Query with functions:
select
imsAuditEvent12.id as ID,
imsAuditEvent12.audit_time as AUDIT_TIME,
imsAuditEvent12.admin_dn as ADMIN_DN,
imsAuditEvent12.admin_name as ADMIN_NAME,
imsAuditEvent12.event_name as EVENT_NAME,
imsAuditEvent12.event_description as EVENT_DESCRIPTION,
imsAuditEvent12.event_state as EVENT_STATE,
imsAuditEvent12.envname as ENVNAME,
imsAuditTaskSession12.task_name as TASK_NAME,
imsAuditTaskSession12.id as TASK_ID,
imsAuditTaskSession12.task_description as TASK_DESCRIPTION,
imsAuditTaskSession12.task_priority as TASK_PRIORITY,
S1.OBJECT_ID,
S1.OBJECT_NAME as OBJECT_NAME,
S1.OBJECT_TYPE as OBJECT_TYPE,
S2.ATTRIBUTE_NAME as ATTRIBUTE_NAME,
S2.ATTRIBUTE_OLDVALUES as ATTRIBUTE_OLDVALUES,
S2.ATTRIBUTE_NEWVALUES as ATTRIBUTE_NEWVALUES,
S3.OBJECT_DN as OBJECT_DN,
S3.OBJECT_TYPE as IMSOBJECT_TYPE,
S3.CONTAINER_NAME as CONTAINER_NAME,
S3.CONTAINER_DN as CONTAINER_DN,
S3.CONTAINER_TYPE as CONTAINER_TYPE
from
imsAuditEvent12 LEFT JOIN imsAuditTaskSession12 ON imsAuditTaskSession12.id=imsAuditEvent12.tasksession_id LEFT JOIN
(select parent_event_id,
ca_concat('imsAuditEventObject12.parent_event_id',parent_event_id,'imsAuditEventObject12.object_name','imsAuditEventObject12') as OBJECT_NAME,
ca_concat('imsAuditEventObject12.parent_event_id',parent_event_id,'imsAuditEventObject12.object_type','imsAuditEventObject12') as OBJECT_TYPE,
ca_concat_noseq('imsAuditEventObject12.parent_event_id',parent_event_id,'imsAuditEventObject12.ID','imsAuditEventObject12') as OBJECT_ID
from
imsAuditEventObject12 group by parent_event_id) S1
ON imsAuditEvent12.id = S1.parent_event_id LEFT JOIN
(select
parent_object_id,
ca_concat('parent_object_id',parent_object_id,'attribute_name','imsauditobjectattributes12') as ATTRIBUTE_NAME,
ca_concat('parent_object_id',parent_object_id,'attribute_oldvalue','imsauditobjectattributes12') as ATTRIBUTE_OLDVALUES ,
ca_concat('parent_object_id',parent_object_id,'attribute_newvalue','imsauditobjectattributes12') as ATTRIBUTE_NEWVALUES
from
imsauditobjectattributes12 group by parent_object_id) S2
ON S1.OBJECT_ID = S2.parent_object_id LEFT JOIN
(select
parent_event_id,
ca_concat('parent_event_id',parent_event_id,'OBJECT_DN','imsauditobjectrelationship12') as OBJECT_DN,
ca_concat('parent_event_id',parent_event_id,'OBJECT_TYPE','imsauditobjectrelationship12') as OBJECT_TYPE ,
ca_concat('parent_event_id',parent_event_id,'CONTAINER_NAME','imsauditobjectrelationship12') as CONTAINER_NAME,
ca_concat('parent_event_id',parent_event_id,'CONTAINER_DN','imsauditobjectrelationship12') as CONTAINER_DN,
ca_concat('parent_event_id',parent_event_id,'CONTAINER_TYPE','imsauditobjectrelationship12') as CONTAINER_TYPE
from
imsauditobjectrelationship12 group by parent_event_id) S3
ON imsAuditEvent12.id =S3.parent_event_id where imsauditevent12.id > 0 and imsauditevent12.id <12000 order by imsauditevent12.id ASC;
2. Query without using functions:
select * from imsauditeventobject12 left join imsauditevent12 on imsauditeventobject12.id=imsauditevent12.id left join imsauditobjectattributes12 on imsauditeventobject12.id=imsauditobjectattributes12.parent_object_id left join imsaudittasksession12 on imsauditevent12.tasksession_id=imsaudittasksession12.id left join imsAuditObjectRelationship12 on imsAuditEvent12.id =imsAuditObjectRelationship12.parent_event_id where imsauditevent12.id >0 and imsauditevent12.id < 12000 order by imsauditevent12.id asc;
Thanks,
BadriHi,
Please find the below more information about the query.
DB version: Oracle 11g Enterprise Edition Release 11.2.0.1.0
Below are source of the functions:
create or replace function ca_concat( ca_key_name in varchar2,
ca_key_val in varchar2,
ca_other_col_name in varchar2,
ca_tname in varchar2 )
return varchar2
as
type rc is ref cursor;
l_str varchar2(32000);
l_sep varchar2(1);
l_val varchar2(32000);
l_count number(6);
l_cur rc;
begin
l_count :=1;
l_str := '';
open l_cur for 'select '|| ca_other_col_name ||'
from '|| ca_tname || '
where ' || ca_key_name || ' = '
using ca_key_val;
loop
fetch l_cur into l_val;
l_val := SUBSTR(l_val,0,102);
exit when (l_cur%notfound or l_count > 38);
l_str := l_str || l_sep || l_count || '.' || l_val;
l_sep := ',';
l_count := l_count + 1;
end loop;
close l_cur;
return l_str;
end;
create or replace function ca_concat_noseq( ca_key_name in varchar2,
ca_key_val in varchar2,
ca_other_col_name in varchar2,
ca_tname in varchar2 )
return varchar2
as
type rc is ref cursor;
l_str nvarchar2(32000);
l_sep varchar2(1);
l_val varchar2(32000);
l_count number(6);
l_cur rc;
begin
l_count :=1;
open l_cur for 'select '||ca_other_col_name||'
from '|| ca_tname || '
where ' || ca_key_name || ' = '
using ca_key_val;
loop
fetch l_cur into l_val;
exit when (l_cur%notfound or length(l_val)>3000 or l_count>1);
l_str := l_str || l_sep || l_val ;
l_sep := ',';
l_count := l_count + 1;
end loop;
close l_cur;
return l_str;
end;
Below are the tables structures:
DESC imsauditevent12;
Name Null Type
ID NOT NULL NUMBER
TASKSESSION_ID NOT NULL NUMBER
TASKSESSION_OID VARCHAR2(100)
PARENT_EVENT_OID VARCHAR2(100)
AUDIT_TIME NOT NULL TIMESTAMP(6)
EVENT_OID NOT NULL VARCHAR2(100)
ADMIN_DN NOT NULL VARCHAR2(512)
ADMIN_NAME VARCHAR2(255)
EVENT_NAME NOT NULL VARCHAR2(255)
EVENT_DESCRIPTION VARCHAR2(4000)
EVENT_STATE VARCHAR2(100)
ENVNAME NOT NULL VARCHAR2(100)
ENV_OID NOT NULL VARCHAR2(100)
DESC imsauditeventobject12;
Name Null Type
ID NOT NULL NUMBER
PARENT_EVENT_ID NOT NULL NUMBER
AUDIT_TIME NOT NULL TIMESTAMP(6)
OBJECT_TYPE NOT NULL VARCHAR2(100)
OBJECT_NAME VARCHAR2(255)
DESC imsauditobjectattributes12;
Name Null Type
ID NOT NULL NUMBER
PARENT_OBJECT_ID NOT NULL NUMBER
AUDIT_TIME NOT NULL TIMESTAMP(6)
DISPLAY_NAME VARCHAR2(255)
ATTRIBUTE_NAME NOT NULL VARCHAR2(255)
ATTRIBUTE_OLDVALUE VARCHAR2(4000)
ATTRIBUTE_NEWVALUE VARCHAR2(4000)
DESC imsaudittasksession12;
Name Null Type
ID NOT NULL NUMBER
PARENT_TS_OID VARCHAR2(100)
PARENT_EVENT_OID VARCHAR2(100)
AUDIT_TIME NOT NULL TIMESTAMP(6)
TASKSESSION_OID NOT NULL VARCHAR2(100)
ADMIN_DN NOT NULL VARCHAR2(512)
ADMIN_NAME VARCHAR2(255)
TASK_NAME VARCHAR2(255)
TASK_TAG NOT NULL VARCHAR2(255)
TASK_DESCRIPTION VARCHAR2(4000)
TASK_PRIORITY NUMBER
STATE NOT NULL VARCHAR2(100)
ENVNAME NOT NULL VARCHAR2(100)
ENV_OID NOT NULL VARCHAR2(100)
DESC imsAuditObjectRelationship12;
Name Null Type
ID NOT NULL NUMBER
PARENT_EVENT_ID NOT NULL NUMBER
AUDIT_TIME NOT NULL TIMESTAMP(6)
OBJECT_TYPE NOT NULL VARCHAR2(100)
OBJECT_DN NOT NULL VARCHAR2(512)
CONTAINER_TYPE NOT NULL VARCHAR2(100)
OBJECT_NAME NOT NULL VARCHAR2(255)
CONTAINER_NAME NOT NULL VARCHAR2(255)
CONTAINER_DN NOT NULL VARCHAR2(512)
OPERATION NOT NULL VARCHAR2(50)
Thanks,
Badri -
Joining Two Tables based on Conditions.
Hi All,
i would like to join two tables emp and dept with conditional join like
for example: select emp.column1...............
left outer join DEPT ON if Dept.column1='A" then emp.column1=dept.column1
else emp.column2=dept.column3
i know that bu using the UNION we can dothis, but i donot want to USE UNION.
please let me know if any workaround for this.
Thanks,
KalyanSQL> select * from etl
2 /
EMPNO ENAME JOB MGR SAL COMM DEPTNO AAA DEPT_NO
7566 JONES MANAGER 7839 2975 20 2 20
7654 MARTIN SALESMAN 7698 1250 1400 30 3 10
7698 BLAKE MANAGER 7839 2850 30 3 10
7782 CLARK MANAGER 7839 2450 10 1 20
7788 SCOTT ANALYST 7566 3000 20 2 20
7839 KING PRESIDENT 5000 10 1 20
7844 TURNER SALESMAN 7698 1500 30 3 10
7876 ADAMS CLERK 7788 1100 20 2 20
7900 JAMES CLERK 7698 950 30 3 10
7902 FORD ANALYST 7566 3000 20 2 20
7934 MILLER5 CLERK 7782 1300 10 1 20
7936 MILLER7 CLERK 7782 1300 10 1 20
12 rows selected.
SQL> select * from dept;
DEPTNO DNAME LOC
10 ACCOUNTING NEW YORK
20 RESEARCH DALLAS
30 SALES CHICAGO
40 OPERATIONS BOSTON
SQL> ed
Wrote file afiedt.buf
1 select
2 e.empno,
3 e.ename,
4 e.deptno,
5 aaa,
6 e.dept_no,
7 d.deptno,
8 d.dname
9 from
10 etl e ,
11 dept d
12 where
13 (e.aaa =1 and e.deptno = d.deptno) or
14* (e.aaa =2 and e.dept_no =d.deptno)
SQL> /
EMPNO ENAME DEPTNO AAA DEPT_NO DEPTNO DNAME
7566 JONES 20 2 20 20 RESEARCH
7788 SCOTT 20 2 20 20 RESEARCH
7876 ADAMS 20 2 20 20 RESEARCH
7902 FORD 20 2 20 20 RESEARCH
7782 CLARK 10 1 20 10 ACCOUNTING
7839 KING 10 1 20 10 ACCOUNTING
7934 MILLER5 10 1 20 10 ACCOUNTING
7936 MILLER7 10 1 20 10 ACCOUNTING
8 rows selected.Regards
Singh -
Joining 3 tables based on the Value from 1 Table
Dear Oracle Guru's
I have a Table called Resourcemaster , which stores the details of Resources for the project , The Resources can be of 2 types either our own employees as well as Hired Developers from other consultancies. The following is the proposed Resourcemaster table structure
Resourcemaster
Project_id
Resource_ID
Resource_type (E - Employees /H - Hired)
Resource_code
Employeemaster
Emp_code
Emp_Name
Emp_address
Hiredresourcemaster
Hired_code
Hired_Name
Hired_Address
I need to query the resourcemaster , my result should be containing Project id, resource id , Resource type, Resource Name and Resource Address. for which the details are in the above 3 tables . How these 3 tables can be joined and the join is based on the condition, if the resource type is E then resource code = Emp_code from employee master or if the resource type is H then resource_code = Hired_code.
I am not clear how to join them in a single query and i got stuck
Kindly Clarify me
With Warm Regards
ssrssr wrote:
I have a Table called Resourcemaster , which stores the details of Resources for the project,So this table should really be called PROJECT_RESOURCES :-)
The Resources can be of 2 types either our own employees as well as Hired Developers from other consultancies. So you have a table called RESOURCES (id [PK], code [UK?], name, address, resource_type [E or H])
And the PROJECT_RESOURCES table is this: (project_id [FK to PROJECTS], resource_id [FK to RESOURCES])
And by modelling your data like this, you'll also find that querying because much easier.
Hope this helps.
Regards,
Rob. -
How to Insert-Select and Updade base table
Hi All,
How is the best way to do this?
I have a table A that has 1million rows.
I need to Insert-Select into table B from a Group by on table A,
and Update all rows in table A that were used into Insert with a flag.
(select a hundred from A and insert 10 thousands into B)
What to do?
1-Update table A with flag before Insert-Select?
2-Insert-Select group by into table B, before Update?
3-Another way?
Thanks in advance,
EdsonEither way. But you may find that updating the source flag first and then using that flag as part of your where clause when extracting rows to put in the destination table is a bit faster.
In any case, you will commit only once after all of the work is done. -
Select query on scapptseg table based on tst_from field.
Hi everybody,
We enhanced the activity search with date type and date fields. User will enter date along with the datetype field to search. He can enter even ranges also for date field.
I tried by converting the date into timestamp and querid the table but in vain as timestamp is different from the timestamp in table even though date part is same.
Please let me know how to query this table using date. This may be a basic question. Please help me.Thanks for your reply.
I know that. For example user entered 5/15/2014 in date field on web ui.
in SCAPPTSEG, tst_from having value 5/15/2014 06:40:00 ( 20140515064000) , when I use convert statement below i am getting a timestamp where date is same but timepart is different. so query is failing.
CLEAR lv_timestamp.
CONVERT DATE '20140515'
TIME sy-uzeit
INTO TIME STAMP lv_timestamp TIME ZONE sy-zonlo.
My question is when we have a timestamp filed in database , can i query the database when i am having only date values at my hand and i dont have any time information. -
How and when does table SWIWIOBJCT being updated / populated with workitem
Hi Experts,
I am currently debugging an issue wherein a Invoice Workflow is being displayed in the Purchase Order Workflow Overview. I debugged this and found out that this is because there are entries being selected from table SWIWIOBJCT and this will be also displayed in the workflow overview.
So what I am trying to look into is how does this table being populated. Like, what are the criteria and requirements that this table will be updated / populated.
Any help is highly appreciated.
Thanks so much in advance,
Larissa
Edited by: Larissa Taguiamon on Apr 14, 2010 7:48 PMAbdullah
The EKBE table will have items related to PO history - so if you go to a PO line item and look at the PO history you will see an invoice but you will NOT see a payment. Payments are not directly related to a PO and therefore no payment information would appear in your PO history and therefore it wouldn't be on the EKBE table either
Sandra -
Is it possible to use a case statement when joining different tables based on input parameters?
Hi,
I have a scenario where my stored procedure takes 5 parameters and the users can pass NULL or some value to these parameters and based on the parameters, I need to pull data from various tables.
Is it possible to use a case statement in the join, similar the one in the below example. I'm getting error when I use the below type of statement.
select a.*
from a
case
when parameter1=1 then
inner join a on a.id = b.id
when parameter1=2 then
inner join a on a.id = c.id
end;
Please let me know, if this type of statement works, and if it works will it create any performance issues?. If the above doesn't work, could you please give me some alternate solutions?
Thanks.Here's a technique for joining A to B or C depending on the input parameters. In theory, you are joining to both tables but the execution plan includes filters to skip whichever join is not appropriate. The drawback is that you have to do outer joins, not inner ones.
CREATE TABLE A AS SELECT LEVEL ak FROM dual CONNECT BY LEVEL <= 100;
CREATE TABLE b AS SELECT ak, bk
FROM A, (SELECT LEVEL bk FROM dual CONNECT BY LEVEL <= 10);
CREATE TABLE c(ak, ck) AS SELECT ak, bk*10 FROM b;
variable p1 NUMBER;
variable p2 NUMBER;
exec :p1 := 1;
exec :p2 := 20;
SELECT /*+ gather_plan_statistics */ A.ak, nvl(b.bk, c.ck) otherk FROM A
LEFT JOIN b ON A.ak = b.ak AND :p1 IS NOT NULL AND b.bk = :p1
LEFT JOIN c ON A.ak = c.ak AND :p1 is null and :p2 IS NOT NULL and c.ck = :p2
WHERE A.ak <= 9;
SELECT * FROM TABLE(dbms_xplan.display_cursor(NULL,NULL,'IOSTATS LAST'));
| Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers |
| 0 | SELECT STATEMENT | | 1 | | 9 |00:00:00.01 | 7 |
|* 1 | HASH JOIN OUTER | | 1 | 9 | 9 |00:00:00.01 | 7 |
|* 2 | HASH JOIN OUTER | | 1 | 9 | 9 |00:00:00.01 | 7 |
|* 3 | TABLE ACCESS FULL | A | 1 | 9 | 9 |00:00:00.01 | 3 |
| 4 | VIEW | VW_DCL_5532A50F | 1 | 9 | 9 |00:00:00.01 | 4 |
|* 5 | FILTER | | 1 | | 9 |00:00:00.01 | 4 |
|* 6 | TABLE ACCESS FULL| B | 1 | 9 | 9 |00:00:00.01 | 4 |
| 7 | VIEW | VW_DCL_5532A50F | 1 | 9 | 0 |00:00:00.01 | 0 |
|* 8 | FILTER | | 1 | | 0 |00:00:00.01 | 0 |
|* 9 | TABLE ACCESS FULL | C | 0 | 9 | 0 |00:00:00.01 | 0 |
Predicate Information (identified by operation id):
1 - access("A"."AK"="ITEM_0")
2 - access("A"."AK"="ITEM_1")
3 - filter("A"."AK"<=9)
5 - filter(:P1 IS NOT NULL)
6 - filter(("B"."AK"<=9 AND "B"."BK"=:P1))
8 - filter((:P2 IS NOT NULL AND :P1 IS NULL))
9 - filter(("C"."AK"<=9 AND "C"."CK"=:P2))
You can see that table C was not really accessed: the buffer count is 0.
exec :p1 := NULL;
SELECT /*+ gather_plan_statistics */ A.ak, nvl(b.bk, c.ck) otherk FROM A
LEFT JOIN b ON A.ak = b.ak AND :p1 IS NOT NULL AND b.bk = :p1
LEFT JOIN c ON A.ak = c.ak AND :p1 is null and :p2 IS NOT NULL and c.ck = :p2
WHERE A.ak <= 9;
SELECT * FROM TABLE(dbms_xplan.display_cursor(NULL,NULL,'IOSTATS LAST'));
Now table B is not accessed.
| Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | Reads |
| 0 | SELECT STATEMENT | | 1 | | 9 |00:00:00.02 | 7 | 2 |
|* 1 | HASH JOIN OUTER | | 1 | 9 | 9 |00:00:00.02 | 7 | 2 |
|* 2 | HASH JOIN OUTER | | 1 | 9 | 9 |00:00:00.01 | 3 | 0 |
|* 3 | TABLE ACCESS FULL | A | 1 | 9 | 9 |00:00:00.01 | 3 | 0 |
| 4 | VIEW | VW_DCL_5532A50F | 1 | 9 | 0 |00:00:00.01 | 0 | 0 |
|* 5 | FILTER | | 1 | | 0 |00:00:00.01 | 0 | 0 |
|* 6 | TABLE ACCESS FULL| B | 0 | 9 | 0 |00:00:00.01 | 0 | 0 |
| 7 | VIEW | VW_DCL_5532A50F | 1 | 9 | 9 |00:00:00.01 | 4 | 2 |
|* 8 | FILTER | | 1 | | 9 |00:00:00.01 | 4 | 2 |
|* 9 | TABLE ACCESS FULL | C | 1 | 9 | 9 |00:00:00.01 | 4 | 2 | -
Adding one more table to the select statement joining 4 tables gives dump
Hi All,
There is a select statement using which four tables namely VBAK,VBAP,LIPS and LIKPUK(view) are joined(inner join).Here, date and time fields are selected from LIPS and used.
My requirement is to consider the Date (LIKP - WADAT_IST) instead of LIPS-ERDAT and time(LIKP-SPE_WAUHR_IST) is to be used instead of LIPS-erzet.
Neither LIPS nor LIKPUK contains time(SPE_WAUHR_IST) field. And, I cannot remove LIPS table or LIKPUK view as each contains a unique field which is used in the report.
When I tried to join LIPS in the select query, it is going to dump.
Can someone suggest a good approach ?
Thanks,
PavanThank you for the detailed explanation of the dump.
The dump details together with your code lead to the answer: 42.
Regards,
Clemens -
SQLPLUS sub quey and joining multiple tables
SELECT a.ac_number AS ac_number,
m.mod_name AS Model,
m.mod_manufacturer AS Make,
ch.char_trip,
ch.destination
FROM tables.aircraft a
SELECT a.ac_number,
count(char_trip) numtrip,
avg(count(char_trip)) OVER() avgnumtrip
FROM tables.charter
GROUP BY charter.ac_number)
charter
WHERE a.ac_number = ch.ac_number
AND a.mod_code = m.mod_code
AND charter.numtrip > charter.avgnumtrip
Sqlplus> @ 2
ERROR at line 7:
ORA-00933: SQL command not properly endedCan someone help me with that? also my where clause doesnt seem right. Im trying to do a left join on. thanksHi,
SELECT a.ac_number AS ac_number,
m.mod_name AS Model,
m.mod_manufacturer AS Make,
ch.char_trip,
ch.destination
FROM tables.aircraft a
SELECT a.ac_number,
count(char_trip) numtrip,
avg(count(char_trip)) OVER() avgnumtrip
FROM tables.charter
GROUP BY charter.ac_number)
charter
WHERE a.ac_number = ch.ac_number
AND a.mod_code = m.mod_code
AND charter.numtrip > charter.avgnumtrip
;Few things which i could notice
refer comments
SELECT a.ac_number AS ac_number,
m.mod_name AS Model, /* what table is m */
m.mod_manufacturer AS Make, /* what table is m */
ch.char_trip,/* assume you want to alias charter as ch */
ch.destination/* assume you want to alias charter as ch */
FROM tables.aircraft a /* no comma */
SELECT a.ac_number, /* cannot refer A (tables.aircraf) table here */
count(char_trip) numtrip,
avg(count(char_trip)) OVER() avgnumtrip
FROM tables.charter
GROUP BY charter.ac_number)
charter
WHERE a.ac_number = ch.ac_number /* assume you want to alias charter as ch */
AND a.mod_code = m.mod_code /* what table is m */
AND charter.numtrip > charter.avgnumtrip /* change charter to CH if you alias charter as CH */ -
To Select Data from Mutiple Table having different column name
Dear All,
I have 100 tables under one user Operation, each table has column containg the code of the Data Entry Operator, But name of the column in each table is different.
Can anyone give the script to run from SQL PLUS so the we can find the total entry of each D.E. Operator per month.
Thanks and Regards,
ManojPerhaps the UNION ALL operator is what you want.
SELECT data_entry_operator, count(*) AS qty
FROM(
SELECT de_oper AS data_entry_operator FROM a
UNION ALL
SELECT d_e_operator FROM b
UNION ALL
SELECT d_e_op FROM c
GROUP BY data_entry_operator;
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