I huge table with million of rows and no of column more than 300.. is it possible to keep this table in some memory where oracle can access it fast as compare to disk memory.
View 8 Replies
have a performance problem with a simple query, for example:
SELECT *
FROM CA_ADDRESS
WHERE address_k1 = 'L163'
I have an index created in column address_k1. CA_ADDRESS is a 3-4 Million Record table.
I need to improve the performance of the query. How I can improve it?
Due to some business requirements a table field needs to change from date to timestamp in order to handle the millisecs.
1>When i alter the row , for a table with 150 million recs will there be a conversion. Is there a recommended way to convert the field. Mind you this field is used as a part of composite PK.
2> There is a interfacing application which connects and copies the data to its system and is using the date type, will that application be able to continue to work without any changes, if it does not care about the millisecs.
3> Will there be performance impact on an existing application that uses the date field to sort
4> Will DB need more space due to the change
trying to update a column in a table which has 3 columns of 16million rows from column in another table which has 1million rows, there is no relationship between the 2 tables.
Table A has 3 columns of 16million rows, the first two columns have 16million ID numbers, the 3rd colunm is currently NULL.
Table B has 1million Numbers, i need to somehow update column 3 in table A using the numbers in table B, it doesnt how many times each of the 1 million numbers are used but i dont want it to just update every row to the same value.
We have two tables, TableA and TableB that contain list of accounts and balances.The requirement is to compare the balances of accounts in both the tables, and if there is a difference, then record that difference with account number in another table.
Both TableA and TableB contain more than 10 million rows.What is the best way to do this task in PL/SQL? A join on TableA and TableB to know the differences has become very slow due to large volume.
I am trying to update a million rows in one table with the values from another tables.
Table being updated CI_ADJ_CHAR column CHAR_VAL_FK1
Table from which values will be used CK_ADJ columns (cx_id, ci_id)
The CI_ADJ_CHAR.CHAR_VAL_FK1 values match CK_ADJ.CX_ID and should be updated with the value CK_ADJ.CI_ID.
The CK_ADJ table has 1.3 million rows and both the columns have indexes defined. Table definitiuon mentioned below
The CI_ADJ_CHAR table has 14 million rows and will update 1 million rows and has an index on the ADJ_ID column but not on the CHAR_VAL_FK1 column.
We have to load 10 million rows in a table from another table based on the multiple joins. How much tablespace size we allocate to the table and for performance point of view how much should be the SGA size.
View 11 Replies View RelatedI have following table.
CREATE TABLE ORAFAQ
(
DPT NUMBER,
EMP NUMBER,
SAL NUMBER
)
[Code]....
DPTEMPSAL
1110
12100
131000
241500
25100
26500
27100
but i need data like
Dept
1
1 2 3 --3 columns show each employee
10 100 1000 --3 columns show salary below each employee
2
4 5 6 7
1500 100 500 100
I have two tables as follows:
TABLE_1
ID ENTRY_DATE VALUE
------- --------------- ----------
1 1-JUN-12 21
1 2-JUN-12 51
1 3-JUN-12 232
1 4-JUN-12 221
1 5-JUN-12 424
.
.
.
.
1 26-JUN-12 52
1 27-JUN-12 0
1 28-JUN-12 247
1 29-JUN-12 528
1 30-JUN-12 489
2 1-JUN-12
2 2-JUN-12
2 3-JUN-12
2 4-JUN-12
2 5-JUN-12
.
.
.
.
2 26-JUN-12
2 27-JUN-12
2 28-JUN-12
2 29-JUN-12
2 30-JUN-12
TABLE_2
ID DAY_1 DAY_2 DAY_3 DAY_4 DATE_5 .......... DAY_26 DAY_27 DAY_28 DAY_29 DAY_30
----- ---------- --------- --------- ---------- ---------- --------- --------- -------- -------- --------
1 21 51 232 221 424 52 0 247 528 489
2
There are millions of DISTINCT ID values in TABLE_1 and corresponding to each ID there are some values for all the days of a month. I need to insert these values in TABLE_2 in the above format.
How to convert station & date wise multiple rows to date wise column. I have a table TEST like this,
STN_Name Date State
DELHI1-Sep-201G
DELHI2-Sep-201B
DELHI3-Sep-201G
DELHI4-Sep-201G
DELHI5-Sep-201G
DELHI6-Sep-201M
DELHI7-Sep-201G
DELHI8-Sep-201G
DELHI9-Sep-201G
DELHI ......... ..
DELHI 30 Sep 2012 G
KOLKATA1-Sep-201G
KOLKATA2-Sep-201B
KOLKATA3-Sep-201B
KOLKATA4-Sep-201B
KOLKATA5-Sep-201G
KOLKATA6-Sep-201M
KOLKATA7-Sep-201G
KOLKATA8-Sep-201G
KOLKATA9-Sep-201B
I want output like this
STN_Name1-Sep-20122-Sep-20123-Sep-20124-Sep-20125-Sep-2012............Sep 2012
DELHI G B G G G M
KOLKATA G B B B G M
Calculating the difference between the two rows of same columns? Example of my Scenario is as follows
I have a table as shown below, there are checks thats has been issued per week (to tell how its been issued per week ,if you see the week number ,there is a change in week no for period of 7 days i.e. what i have to show on my results tables based on week no and probably we may need to take into account for check no too.)
wekno ! checkno ! end date
------ ! ------ ! ------
1 ! 1 ! 1/7/2012
1 ! 2 ! 1/8/2012
1 ! 3 !1/9/2012
2 ! 1 ! 1/14/2012
2 ! 2 ! 1/15/2012
3 ! 1 ! 1/21/2012
result table and date range i picked up was 1/1/2012-1/31/2012
wekno ! checkno ! end date ! previous period ! Daysin period
------ ! ------ ! ------ ! ------------- ! ------------
1 ! 1 ! 1/7/2012 ! null (as previous period is 2011 and so prvs year i dont count) ! 7 this because we see change in wkno per 7 days
1 ! 2 ! 1/8/2012 !null becoz this one falls same week and therefore previous peroid would be the same as above ! 7 above reason
1 ! 3 ! 1/9/2012 ! null becoz this one falls same week and therefore previous peroid would be the same as above ! 7 above reason
2 ! 1 ! 1/14/2012 ! 1/7/2012 becoz this a second week as you see the change in wekno and therefore its previosu period is 1/7/2012 ! 7 above reason
2 ! 2 ! 1/15/2012 ! 1/7/2012 becoz this check falls on the same second week so previosu would be 1/7/2012 ! 7 above reason
3 ! 1 ! 1/21/2012 ! 1/14/2012 as a new week no starts this gonn be 1/4/2012 ! 7 above reason
writing the query, Output is shown below. facing problem in when converting columns into rows.
CREATE TABLE TESTTAB (IDNUM VARCHAR2(3),PLAN1 VARCHAR2(5),AMT1 NUMBER,PLAN2 VARCHAR2(5),AMT2 NUMBER,PLAN3 VARCHAR2(5),AMT3 NUMBER,PLAN4 VARCHAR2(5),AMT4 NUMBER,PLAN5 VARCHAR2(5),AMT5 NUMBER)
INSERT INTO TESTTAB VALUES('100','A01',9,'','','','','D04',300,'E05',900)
INSERT INTO TESTTAB VALUES('101','','','B02',56,'C03',24,'','','','')
INSERT INTO TESTTAB VALUES('102','A01',33,'','','C03',545,'','','E05',23)
[Code]...
My OUTPUT SHOULD BE LLIKE
IDNUM PLAN AMT
100 A01 9
100 D04 300
100 E05 900
101 B02 56
101 C03 24
102 A01 33
102 C03 545
102 E05 23
.
.
104 C03 44
can we show the following rows into column upto 1000 using sql query?
A
1
2
3
4
[code]...
Result should like this 1,2,3,4,5,6,7,8,...... 1000 including comma(,)
I have a table with columns emp_i, LOC_C and SUBSID_C. I want to find all emp_i's with LOC_C OR SUBSID_C as always NULL. Please note that the value should be NULL, always, for all dates.
--------------------------------------------
EX:
emp_i----LOC_C---SUBSID_C--Eff_Date
100------20------30--------01/01/2011
101------NULL----10--------05/01/2011
102------NULL----NULL------02/01/2011
101------20------NULL------02/01/2011
102------NULL----NULL------05/01/2011
103------NULL----20--------01/01/2011
103------NULL----NULL------02/01/2011
--------------------------------------------
The query ---
should return 102 as LOC_C OR SUBSID_C is ALWAYS NULL.
should return 103 as LOC_C is ALWAYS NULL.
should not return 101, as LOC_C is not ALWAYS NULL.
In other words, the query should give list of emp_i who never ever had a non-null value for LOC_C OR SUBSID_C. The purpose is to find the emp_i for which the columns LOC_C and SUBSID_C are never used.
I tried the query:
---------------------------------------------------
SELECT DISTINCT ORG_EMP_I FROM tab1
WHERE ORG_GRP_I = 58
AND ORG_EMP_I NOT IN (
SELECT DISTINCT org_emp_i
FROM tab1 ap
WHERE ap.ORG_GRP_I = 58
AND trim(ap.LOC_C) IS NOT NULL OR ap.ORG_SBSID_C IS NOT NULL )
---------------------------------------------------
SELECT a.objname, c.property1, c.value1
FROM datatable a, datatabledet c
WHERE a.OBID=c.DATAOBID
and a.CLASSNAME='Class1';
OBJNAME PROPERTY1 VALUE1
280-419-1994psCls1Attr3Attr1Value3
280-419-1994psCls1Attr4Attr1Value4
280-419-1994psCls1Attr5Attr1Value5
[code]....
After query output we put through front end code to make it in the following way i.e. convert rows into columns but with respective data value:
psCls1Attr3 psCls1Attr4 psCls1Attr5 psCls1Attr1 psCls1Attr2 psCls1Attr7
280-419-1994 Attr1Value3 Attr1Value4 Attr1Value5 Attr1Value1 Attr1Value2
280-419-1995 Attr1Value11Attr1Value21Attr1Value71
how to output in the above format using SQL.
converting Rows to Column for a specific group.
Following is the query
SELECT Lpad(papf.employee_number, 6, '0') "File#",
papf.full_name,
Decode(ppee.processing_type, 'R', Decode(ppee.element_name,
'Regular Wages USD', peev.screen_entry_value,
'Regular Salary USD', Round(peev.screen_entry_value / 26, 2),
0),
[Code]...
Which gives me out put as
Example 1
Employee Number Name Value Rate Type Type Assignment Id
-----------------------------------------------------------------
4 Employee 1 800 N 5 Yr Bonus 64
4 Employee 1 1063 N 6 Months Bouns 64
4 Employee 1 24.04 H Reg Hourly Sal 64
5 Employee 2 6923.08 S Reg Sal 65
6 Employee 3 5961.54 S Reg Sal 66
6 Employee 3 15000 N 6 Months Bouns 66
I want to convert above out to look like following
Emp Num Name Value Rate Type Type Val 1 Rate Type 1 Type 1 Value 2 Rate Type 2 Type 2 Assignt Id
-------------------------------------------------------------------------------------------------------------------
4 Employee 1 24.04 H Reg Hourly Sal 800 N 5 Yr Bon 1063 N 6 Mon Bon 64
5 Employee 2 6923.08 S Reg Sal 65
6 Employee 3 5961.54 S Reg Sal 15000 N 6 MontBon 66
Example of Query Output 2.
Employee Number Name Value Rate Type Type Assignment Id
--------------------------------------------------------------------------------
4 Employee 1 800 N 5 Yr Bonus 64
4 Employee 1 1063 N 6 Months Bouns 64
4 Employee 1 1345 N Patent Bonus 64
4 Employee 1 24.04 H Reg Hourly Sal 64
5 Employee 2 6923.08 S Reg Sal 65
6 Employee 3 5961.54 S Reg Sal 66
6 Employee 3 15000 N 6 Months Bouns 66
Desired Output from Above Query. As you can see column have increased as one more row for same employee has increased
ENu Nm Val RTy Ty Val1 RTy1 Ty1 Val2 RTy2 Ty2 Val3 RTy3 Ty3 AsgId
-------------------------------------------------------------------------------------------------------------------
4 E1 24.04 H Reg Hour Sal 1063 N 6 Mon Bns 1345 N Pat Bon 800 N 5YB 64
5 E2 6923.08 S Reg Sal 65
6 E3 5961.54 S Reg Sal 15000 N 6 Mos Bns 66
I have a table with below structure
Id - Desc -repeat_times
1a - andy - 3
2b - santa - 5
I want to write a sql query which outputs two columnns like below. the particular row to be repeated as per the repeat_times column.
1a-1 andy
1a-2 andy
1a-3 andy
2b-1 santa
2b-2 santa
2b-3 santa
2b-4 santa
2b-5 santa
I have tried but am failing..
Currently I have a requirement where I need return data of different columns in rows.
For example: I have a table that contains monthly data for voice calls, sms count and mms count for each mobile. I will need to get the output as summary of voice calls, sms and mms counts in different rows. For this I am using an approach which I am not totally satisfied even though I am getting the required results (majorly because i am querying the table thrice for getting this data).
I would want to know about any alternate ways of implementation.
--Create table
Create table
UsageData
(Mobile varchar2(20),
CAL_MONTH Varchar2(20),
VOICE_CALL number(9),
SMS number(9),
MMS number(9)
);
--Data
insert into UsageData values ('9999','JAN',1,2,3);
insert into UsageData values ('9888','JAN',5,20,1);
insert into UsageData values ('9777','JAN',4,5,9);
insert into UsageData values ('9666','JAN',200,111,8);
insert into UsageData values ('9555','JAN',154,1534,3);
insert into UsageData values ('9444','JAN',0,2,212);
--Query
select 'VOICE_CALL' AS EVENT,sum(VOICE_CALL) AS UNITS from UsageData where cal_month ='JAN'
union all
select 'SMS',sum(SMS) from UsageData where cal_month ='JAN'
union all
select 'MMS',sum(MMS) from UsageData where cal_month ='JAN';
i'm using the below query to update a VOTER table with over 15million records but it's taking ages to finish. i am using 11gr2 on linux
the query:
MERGE INTO voter dst
USING (
SELECT voterid,
pollingstation || CASE
WHEN ROW_NUMBER () OVER ( PARTITION BY pollingstation
[code]........
I want to update a table 8 million records of a table which has 10 millions records, what could be the best strategy if the table has a BLOB column with 600GB worth of data. BLOB itself is 550GB. I am not updating the BLOB column. Usually with non-BLOB data i have tried doing "CREATE TABLE new_table as select <do the update "here"> from old_table;" method .
View 6 Replies View RelatedI need to insert almost million rows in my database.I have already split the row in separate files so that task would be easier. Now, i am planning to put commit after every 1000 line so that undo generation would be less and no locking would take place if i inserting those lines from multiple sessions.
But how can i insert commit after every 1000 line??
how to convert rows data into column...
View 7 Replies View RelatedI have one table , with one column having 2,3 or 4 machine codes , i need to display them as each row per machine code will it be possible to do as i have thousands of records similar to the test case and which i had to do it manually in excel and then upload it back.
create table ow_oper_setup (wo_no varchar2(12),mrk_no varchar2(20),pos_no varchar2(30),mc_code varchar2(60))
insert into ow_oper_setup VALUES ('1270','1270001','W165','IR HO BV ')
insert into ow_oper_setup VALUES ('1270','1270001','W1332','IR BV ')
insert into ow_oper_setup values ('1270','1270001','W1367','RE HO SC BV ')
insert into ow_oper_setup values ('1270','1270001','W389','RE HO SC BV')
commit;
SELECT * FROM ow_oper_Setup;
WO_NOMRK_NOPOS_NOMC_CODE
12701270001W165IR HO BV
12701270001W1332IR BV
12701270001W1367RE HO SC BV
12701270001W389RE HO SC BV
--i want the output in the following way or the same table data to be replaced as below
WO_NOMRK_NOPOS_NOMC_CODE
12701270001W165IR
12701270001W165HO
12701270001W165BV
12701270001W1332IR
12701270001W1332BV
12701270001W1367RE
12701270001W1367HO
12701270001W1367SC
12701270001W1367BV
12701270001W389RE
12701270001W389HO
12701270001W389SC
12701270001W389BV
I have a select statement
select name, address, qty
from names_table
and it returns a result such as
name|address|qty
alan,1 the street,5
bert,2 the road,3
what I want to do is create an output that takes the value in the qty column and repeates the number of rows e.g. the alan record 5 times and the bert record 3 times
name|address|qty
alan,1 the street,5
alan,1 the street,5
alan,1 the street,5
[code]...
how I might go about acheiving this?
i need to transpose a column to rows.
CREATE TABLE TEST(c1 VARCHAR(10),c2 VARCHAR(2),t1 NUMBER,t2 NUMBER);
INSERT INTO TEST VALUES('a','a',1,2);
INSERT INTO TEST VALUES('b','b',2,3);
INSERT INTO TEST VALUES('c','c',7,6);
INSERT INTO TEST VALUES('d','d',2,2);
Actual output.
C1C2T1T2
aa12
bb23
cc76
dd22
I need the output in this format
C1C2C3C4
aaT11
aaT22
bbT12
bbT23
ccT17
ccT26
ddT12
ddT22
ie the header t1 and t2 has to come in the output along with the corresponding values it has.the number of column as T1,T2 will be dynamic cannot predict before.
column sid format 'a5'
column serial# format 'a10'
column mins_running format 'a15'
column sql_text format 'a100'
set linesize 200
set pagesize 30
[Code]..
I am running this code, and the output shows multiple lines.
TRIM(S.SID) TRIM(S.SERIAL#) MINS_RUNNING SUBSTR(Q.SQL_TEXT,1,70)
---------------------------------------- ---------------------------------------- --------------- ----------------------------------------------------------------
700 46592 242.08 Select count(*) as count, case when count(*)>0 then 'FAIL' else
700 46592 242.08 'PASS' end as result
from (SELECT cv.code_value
FROM code_valu
[Code]...
Is there a way to wrap up the column for SQL_TEXT VARCHAR2(64) so that I can 1 row for the output?
I am having a table with following data:
DateProduct_nameQuantity_sold
12/6/2012Product11
12/7/2012product23
12/6/2012product34
12/7/2012Product12
12/7/2012product21
12/6/2012product35
12/7/2012product33
12/6/2012product24
Now I want this data in following manner:
For each date - how much is the Total quantity sold , sum of Product1 sold,Sum of product2 sold,etc. I am having more than 50 products in my table.
dateQuantity_soldProduct1Product2Product3
12/6/2012141 49
12/7/201292 43
I was trying this by decode but the sum of the product was not correct.
I have a table emp having data as
empno ename sal deptno
1001 manoj 1000 10
1001 sachin 2000 20
1003 manoj 30000 30
Now I wanted to write a query which will display the results like below. Row data need to be display in the columns
empno ename sal deptno 1001 manoj 10 20 1003 30
1001 manoj 1000 10 1001 manoj 10
1001 sachin 2000 20 1001 sachin 20
1003 manoj 30000 30 1003 manoj 1003 30
How to print the rows into column data?
Consider the following (example)table.,
TABLE_A
------------------------------
ID DEPT CRS
------------------------------
1 CS CS_100
2 SCIENCE SCI_150
3 MATH MATH_400
4 HISTORY HIS_110
[Code]...
To display CRS from TABLE_A where DEPT = 'MATH' but in the following format.,
--------------------------------------------
NO DEPT CRS
--------------------------------------------
1 MATH MATH_400, MATH_550, MATH_230
--------------------------------------------
instead of.,
--------------------------
NO DEPT CRS
---------------------------
1 MATH MATH_400
2 MATH MATH_550
3 MATH MATH_230
---------------------------
I need a single select query which converts all the rows into a single value . Below is my requirement :
Create table email_tbl(emailid varchar2(30));
insert into email_tbl('1@y.com');
insert into email_tbl('2@y.com');
insert into email_tbl('3@y.com');
insert into email_tbl('4@y.com');
Now , I need a single select query which gives me the below results.
1@y.com,2@y.com,3@y.com,4@y.com
I have done the above by using a cursors in the pl/sql objects.But want to achieve this with a single sql/query.
