SQL & PL/SQL :: File Data Versus Table Data Comparison
Jun 21, 2010
I have written a java code which reads 2 millions of data under a particular column from CSV file and store it into a set. Now there is a table in Oracle database which contains 10 millions of records for that particular column. Now, I want to form a SQL query which select those records under that particular column from the database table which is in CSV file but not in database table. For e.g.
If I consider the CSV file name as employee.csv and it has column called employee_name under which the records are as follows
employee_name
---------------------
Sudip
Kaushik
Joyanta
Soumya
Ritesh
Gautam
And the database table name called cmp_employee and it has column called employee_name under which the records are as follows
employee_name
--------------------
Sudip
Kaushik
Joyanta
Soumen
Souvik
Sahoo
Now, the "SQL Query" should return ---- "Soumya, Ritesh, Gautam" this three names.
View 2 Replies
Nov 8, 2012
I have two tables T1 and T2. T1 is the original backup snapshot for changed records from overnight batch in a big table and T2 is the overnight batch changed records. Both tables have similar number of rows (T2 might have more for newly inserted rows) and you can find out the differences by comparing these two according to action column in T2 (C - Update, A - Insert and D - Delete)
how to compare these two tables to generate something like the following. I can join these two tables to generate the diff but it is one row per account.
client_nbr branch_cd, account_cd, action column, old_value, new_value
8888 123 45678 C account_clsfn_cd 004 005
8888 123 45678 C buy_cd 98 99
8888 012 34546 A sell_cd 12
8888 321 98765 D dividend_cd 1
I am using Oracle 10g so Unpivot cannot be used.
CREATE TABLE T1
(
CLIENT_NBR CHAR(4 BYTE) NOT NULL,
BRANCH_CD CHAR(3 BYTE) NOT NULL,
ACCOUNT_CD CHAR(5 BYTE) NOT NULL,
ACCOUNT_CLSFN_CD CHAR(3 BYTE),
SELL_CD CHAR(2 BYTE),
BUY_CD CHAR(2 BYTE),
[code]....
View 4 Replies
View Related
Dec 9, 2008
Environment Setup
Oracle Server 11g on HP-UX
Oracle Client on Windows
I am using swingbench tool to generate load on DB and using OLTP like benchmark i am comparing the performance of plain data and encrypted data.
I have created two different database. one for tde and other for plain. I have populated same number of rows in both databases. Then i start running the benchmark and i use SAR to collect disk I/O's, VSAR to CPU usage.
From the sar report it seems that,
Oracle plain has faster transactions, it uses minimum CPU. But when look in tot the Reads/Writes TDE has lower than the plain.
If TDE needs to encrypt the data to store in the disks it should occupy more space than the plain data. Then the I/O should be more in TDE..
Note: Bcz the DB parameters are same, number of rows in the tables are same. File system and its block size are same. I will run the swingbench seperately for both the databases.
I am attaching the excel sheet for sar results. Let me know if you need more information
View 7 Replies
View Related
Sep 2, 2013
First, I'm aware that the equals (=) operator is a "comparison operator compares two values for equality." In other words, in an SQL statement, it won't return true unless both sides of the equation are equal. For example:
SELECT * FROM Store WHERE Quantity = 200; The LIKE operator "implements a pattern match comparison" that attempts to match "a string value against a pattern string containing wild-card characters."
For example:
SELECT * FROM Employees WHERE Name LIKE 'Chris%';
Here,I query about date type data on ORACLE database, I found the following, when I write select statment in this way:
SELECT ACCOUNT.ACCOUNT_ID, ACCOUNT.LAST_TRANSACTION_DATE FROM ACCOUNT WHERE ACCOUNT.LAST_TRANSACTION_DATE LIKE '30-JUL-07';
I get all rows I'm looking for. but when I use the sign equal =
instead :SELECT ACCOUNT.ACCOUNT_ID, ACCOUNT.LAST_TRANSACTION_DATE FROM ACCOUNT WHERE ACCOUNT.LAST_TRANSACTION_DATE = '30-JUL-07';
I get nothing even though nothing is different except the equal sign.
View 6 Replies
View Related
Apr 9, 2012
How we can escape comma while exporting data from table into csv file.
CREATE TABLE emp
(
EMPNO NUMBER(4) NOT NULL,
ENAME VARCHAR2(10 BYTE),
JOB VARCHAR2(9 BYTE),
MGR NUMBER(4),
HIREDATE DATE,
address varchar2(100),
[code].......
i have to export data from emp table which has address column and address column contain comma, when i am running below script, the comma part in address field comes in next tab in csv file, is there any way we can avoid shifting to next tab and can have complete address in one tab.
set echo off
set verify off
set termout on
set heading off
set pages 50000
[code]....
View 9 Replies
View Related
Apr 25, 2013
I have written a below procedure to dump the table data to .csv file.But the problem is i have 20 tables which is holding 75 studies data. Means every table will have 75 studies related data.what i supposed to do is i need to export the data from 20 tables for each study. but this procedures requires me to run the procedure 75(studies)*20(tables) times. is there any technique instead of i manually giving the table name and study name , will it take from any text file where we defined 75 studies in that. or easy there any better way .
create or replace procedure dump_table_to_csv1(p_tname in varchar2,
p_dir in varchar2,
p_filename in varchar2)
is
l_output utl_file.file_type;
l_theCursor integer default dbms_sql.open_cursor;
[code]........
View 7 Replies
View Related
Nov 5, 2010
I want to change dbname,sid,data/control file locations in operational dataguard setup i plan to follow as below
1)shutdown primary and standby (stop managed recovery)
2)change db name in init.ora of primary and standby change database name control file location
3)create control file for primary from trace(script) make changes for db name and file locations
4)mount and open primary database
5)create standby control file
6) transfer standby control file to standby
7) mount stand by database and start manage recovery
If this steps will error free do i need to follow any thing additional to this or what is other best way for this or its not possible at all
View 1 Replies
View Related
Jul 23, 2010
i did everything writen but when i do *SQL>alter database recover managed standby database disconnect from session;*
i go and look in the standby database AlertLog file ,and thats whats writen
*ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1: 'F:ORACLEPRODUCT10.2.0ORADATADBSYSTEM01.DBF'
ORA-27041: unable to open file
OSD-04002: غير قادر على فتح الملف
O/S-Error: (OS 3) The system cannot find the path specified.
[code]....
strange thing that it realises the primary database in drive F and it goes to it but i dont understand what could be the reason of this ,although im doing this command while primary database is shutdown!
View 2 Replies
View Related
Oct 16, 2012
Not able to understand what's wrong with the code. I am trying to import data to a table using a CSV file. I have exported the data (CSV) from the interactive report and I am just trying to insert the same data to the table, through a process. When, I tried to do so; its throwing an error message saying NO_DATA_FOUND and file is not getting inserted into wwv_flow_files table.
But when I removed the data from the CSV file for the comments field and then tried importing the file, the process worked. I don't understand whats the problem with the code.
I have a sample app setup in my workspace for this weird problem.
[URL]
Workspace details:
CSV file with comments field and data in it - when trying to import - throws an error message NO_DATA_FOUND
CSV file with comments field and without data in it - tried importing - this worked
View 2 Replies
View Related
Aug 16, 2011
I have a table revenue
create table revenue
(
person varchar2(23),
month varchar2(3),
rev_amt number
)
and i have data in a file like below
Person Jan Feb Mar Apr Mai Jun Jul Aug Sep Oct Nov Dez
--------------------------------------------------------
Schnyder,345,223,122,345,324,244,123,123,345,121,345,197
Weber,234,234,123,457,456,287,234,123,678,656,341,567
Keller,596,276,347,134,743,545,216,456,124,753,346,456
Meyer,987,345,645,567,834,567,789,234,678,973,456,125
Holzer,509,154,876,347,146,788,174,986,568,246,324,987
Müller,456,125,678,235,878,237,567,237,788,237,324,778
Binggeli,487,347,458,347,235,864,689,235,764,964,624,347
Stoller,596,237,976,876,346,567,126,879,125,568,124,753
Marty,094,234,235,763,054,567,237,457,325,753,577,346
Studer,784,567,235,753,124,575,864,235,753,864,634,678
i want to load it into the table in the following way.
Person Month Revenue
-------------------------
Schnyder Jan 345
Schnyder Feb 223
Schnyder Mar 122
Schnyder Apr 345
Schnyder Mai 324
Schnyder Jun 244
Schnyder Jul 123
Schnyder Aug 123
Schnyder Sep 345
Schnyder Oct 121
Schnyder Nov 345
Schnyder Dez 197
........ ... ...
How to write control file to load this data into the above revenue table.
View 2 Replies
View Related
Jul 24, 2012
how to insert data in a table by deleting previous entered data and only inserting current data like:
CREATE TABLE test
(
name VARCHAR2(20),
id NUMBER
)
INSERT INTO test VALUES ('aaa',5500);
[code]....
I got two rows. now when I do insert statement I want to delete the previously stored data and only insert the current data like:
INSERT INTO test VALUES ('aaa',8);
INSERT INTO test VALUES ('aaa',9);
it must show aaa,8 and aaa,9 bt not the previous values.
NOTE: we can not do sth like: update set... where id = ... becoz the values are dynamic.
View 4 Replies
View Related
