SQL & PL/SQL :: Time Comparison Alone Like Less / Greater Than?
Dec 15, 2010
Select
to_char(to_date('10-02-2006 10:30:00 AM', 'DD-MM-YYYY HH:MI:SS AM'), 'HH:MI:SS AM') as a1,
to_char(to_date('10-02-2006 01:30:00 PM', 'DD-MM-YYYY HH:MI:SS AM'), 'HH:MI:SS AM') as a2,
Case
when to_char(to_date('10-02-2006 10:30:00 AM', 'DD-MM-YYYY HH:MI:SS AM'), 'HH:MI:SS AM') >
[code]...
from the above query i was expecting value '2' but its returning '1'. As I am using TO_CHAR its trying to compare characters. Is there a way, to compare times alone like less than, greater than?
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Dec 27, 2010
I have one inline view query which shows exec\ fetch : 2 sec\ 19 sec It gives 500 rows as final out put, when i give rownum<100 it shows exec\ fetch : 1 sec\ 000 sec, and i cannot use this rownum< 100 alternative as this is inline subquery of big query.
What does this exec and Fetch time is?
How to improve fetch time, (esp with sub-query) ?
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May 26, 2013
how to pull data from a table where date is greater than current time (+24 hours)... my date field is in the following format 15-MAR-2013 20:07:00
I want to do something like this
select * from table_A where date_field > (sys_date_time) +24h
as an example, when I run a query @ 4 PM on March 26, I want to pull data that has date > 4 PM March 27
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Apr 9, 2013
I am creating a query where I am trying to take phone call lengths and put them into buckets of length ranges 0:00 - 0:59, 1:00 - 1:59 etc. Even if there are no calls in the call table I need to return the range with a zero (hence the left join and nvl). When I do this the left join acts like an equal join, I suspect there is some reason left joins only work if there is an equal condition in the join (instead of >= and < that I use, or similarly I could use BETWEEN). I also have a question about performance (below).
The create table script for the lookup is like this:
CREATE TABLE DURATION_RANGES
(
RANGE_TEXT varchar2(20),
RANGE_LBOUND decimal(22),
RANGE_UBOUND decimal(22)
)
Sample inserts are:
INSERT INTO DURATION_RANGES (RANGE_TEXT,RANGE_LBOUND,RANGE_UBOUND) VALUES ('00:00 - 00:59',0,59);
INSERT INTO DURATION_RANGES (RANGE_TEXT,RANGE_LBOUND,RANGE_UBOUND) VALUES ('01:00 - 01:59',60,119);
etc.
The query is:
select
r.range_text as duration_range,
nvl(count(*),0) as calls,
nvl(SUM(call_duration),0) as total_duration
from
[code]...
As I say, it is not returning all ranges in the duration_ranges table, so acting like an inner join. I realize one solution would be to populate duration ranges with every value possible (instead of ranges) so join is an equal join, but that would make the duration_range table larger.
My questions:
1. Is it possible to get the left join to work with the duration range values as they currently are?
2. Even if 1 is possible, would it be better performance to have exact values (but a larger lookup table) and do an equals join instead of >=, < or BETWEEN? Performance now is not bad.
What I mean is (with only one time value and not lbound and ubound:
INSERT INTO DURATION_RANGES (RANGE_TEXT,RANGE_LBOUND,RANGE_UBOUND) VALUES ('00:00 - 00:59',0);
INSERT INTO DURATION_RANGES (RANGE_TEXT,RANGE_LBOUND,RANGE_UBOUND) VALUES ('00:00 - 00:59',1);
INSERT INTO DURATION_RANGES (RANGE_TEXT,RANGE_LBOUND,RANGE_UBOUND) VALUES ('00:00 - 00:59',2);
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Apr 6, 2012
When we are trying to create number data type column of a table with precision greater than actual value,it's accepting the definition of the table . But we are unable to insert any values into the table.how internally it stores the value
SQL> drop table precision_test;
Table dropped
SQL> create table precision_test(name number(2,5));
Table created
SQL> insert into precision_test values (1);
insert into precision_test values (1)
[code]....
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Mar 9, 2011
I have two sql queries. They run the one after another.
Query 1:
select * from capital
where member_status = 'MEMBER' AND rownum <= 25
order by price desc
Query 2:
select * from capital
where member_status = 'MEMBER' AND rownum > 26
order by price desc
Question is, in the query 2 I want records greater than row number 25. In query 2, I don't want the records that were fetched in Query 1. Is there any way to do this without using rownum?
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Jul 15, 2013
I have table TEST_REP with below data
DA SUMA
---------------------- ----------------------
2011 2
2011 3
2011 5
2012 2
2012 7
2014 2
2014 10
2015 2
2016 33
2015 26
2017 21
2017 2
2018 23
13 rows selected
I have used following query to get the below output:
select
br_mat MAT_YEAR,
sum(br_par) TOTAL
from (
(select to_char(da) br_mat,suma br_par from test_rep)
UNION ALL
[code].......
Output :
MAT_YEAR TOTAL
---------------------------------------- ----------------------
2011 10
2012 9
2013 0
2014 12
2015 28
2016 33
2017 23
2018 23
2019 0
2020 0
10 rows selected
Expected Output :
MAT_YEAR TOTAL
---------------------------------------- ----------------------
2011 10
2012 9
2013 0
2014 12
2015 28
2016 33
2017 and Greater 46
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Jul 14, 2011
I have an Oracle application that deals with a 29 hour clock. so the days begin at 5am instead of midnight. I am trying to get data from a table where time is up to certain number of hours, but when it reached the 00 clock my whole query returns no records, even though there is plenty of records before the midnight hour, because the data is saved as lets say 2530 instead of 0130
I am using this
SELECT *
FROM WORK.WORK_UNIT
WHERE (to_char (current_garage) = :entry_blk.curr_garage
OR 'all' = :entry_blk.curr_garage)
AND route >= 0 AND run >= 0
AND ((package_id > 0 and work_code = 99) OR
(package_id is null and work_code = 1))
and Nvl (Emp_No, 0) = 0
AND work_date = :entry_blk.p_work_date
AND on_time <= TO_CHAR(SYSDATE + :Entry_Blk.up_to_hour/24, 'HH24MI')
since oracle deals with a 24hour clock, my code doesn't seem to work if there is data for after midnight (00 hour). I am using :Entry_Blk.up_to_hour/24 to determine up to how many hours I want to see data, i.e.
on_time <= TO_CHAR(SYSDATE + 2/24, 'HH24MI')
will give me data up to 2 hours
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Aug 2, 2012
I have the below query which is doing FTS and is very expensive causing load to timeout.
I did my analysis and found that table is having large number of records and hence FTS is taking long time causing timeout from app side.
I proposed to have this table partitioned but this is still pending with business and they in meantime want some solution other solution to fix this issue.
below is the query and plan
SELECT TRANSACTION_LOG.ID, TRANSACTION_LOG.USER_IDENTIFIER, TRANSACTION_LOG.START_TIME, TRANSACTION_LOG.END_TIME, TRANSACTION_LOG.REQUEST, TRANSACTION_LOG.RESPONSE ....
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Oct 13, 2011
Currently I am working on conversion project. We want to verify the both applications updated database values are same or not.
if you run same transaction in both application values are updated in the database. I want compare both database tables, its updated same values in table or any mismatch in the table, is there any tools available right now to compare the two rows values in same tables.
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Apr 3, 2011
When we create sql and some pieces of sql are implemented as oracle function. and we run this sql only once every day. I read article that function after first run located in cache. This part of cache ( with function ), is it really consume one oracle resources? Or it will be erased after while.
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Mar 7, 2013
This is the description for the procedure:
ADD_REWARD_sp. Given the identifier of a project, add a new reward for the project. The procedure should return a unique identifier for the reward. The month and year indicated should be greater than or equal to the current month, or an error message should be generated. The pledge amount should be greater than zero. The number of backers, if not NULL, should be greater than 1. If the project is not found, generate an error message.
This is the procedure head:
create or replace
PROCEDURE ADD_REWARD_sp(
p_proj_id IN NUMBER,
p_pledgeAmt IN NUMBER,
p_rewardDesc IN VARCHAR2,
[code]...
Basically, what I am struggling with is how to check if th month and year is greater than or equal to current month. I suppose it would be easy with just checking SYSDATE, but in this case I need to use both month and year.
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Dec 9, 2011
I am trying to do a simple query where I need to return the rows from a table and treat each rown according to some rules.The query works fine, and returns all the rows, usually I have 2 rows returned. WHen I add to the query where ROWNUM = 1, I get the first row returned, but when I use when ROWNUM =2 OR ROWNUM >1, I always get null rows retured, even if I have rows in the database. Here is my query:
SELECT on_time
INTO on_time2
FROM work.work_unit
WHERE work_code = 1
AND emp_no = :entry_blk.p_emp_no
AND work_date = :entry_blk.p_work_date
WHERE ROWNUM = 2;
--RETURN NULL
I changed it to the following format, but still I get the same results, only I get data when I say when rownum = 1, i get back the first record in the query
SELECT on_time
INTO on_time2
FROM (SELECT on_time
FROM work.work_unit
WHERE work_code = 1
AND emp_no = :entry_blk.p_emp_no
AND work_date = :entry_blk.p_work_date)
WHERE ROWNUM = 2;
I can't move forward in my form until I figure out why this is not returning records
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Nov 26, 2010
To find all the employees whose salaries greater than avg(salary) of the department.
Quote
select empname,salary,deptid from salaries t1 where
salary > (select avg(salary) from salaries t2 where t1.deptid = t2.deptid);
Unquote
Its not diplaying all departments
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Oct 8, 2012
I've to create a table which has 650 fields and the total length of CREATE TABLE statement got to be more than 4000 characters.I've to create the table by inserting the CREATE TABLE statment in a variable (V1) then by using EXECUTE IMMEDIATE V1 Since VARCHAR2 only supports upto 4000 characters length string, how can I create such table??
DECLARE
V1 VARCHAR2(4000);
BEGIN
V1 :=
-- CREATE TALBE STATEMENT WITH LENGTH MORE THAN 4000
EXECUTE IMMEDIATE V1;
END;
Quote:got the error -- PL/SQL: numeric or value error: character string buffer too small
How can I create such table??
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Oct 15, 2012
For one of my row its returning as below lpad('abcdef', 4 , 'Z') returning abcd
but instead of this if no of characters is greater than 4 i want the actual data without lpad should be returned.
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Dec 27, 2012
For Just learning purpose This is an example found in text book but while i try to execute it fails..I am trying to set Boolean flag to true if the hire_date is greater than 5 years otherwise boolean flag to false
DELARE
v_Hire_date date :='12-Dec-2005';
v_five_years BOOLEAN;
BEGIN
IF
[code].....
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Jul 27, 2010
I have two columns in database
INPUTDATE DDMMYYYY
and
OUTPUTDATE YYYYMMDD
I want to compare both the columns because of format of columns i am getting problem to compare.
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Jun 28, 2010
SQL> select * from query;
CUSTO SWITCH DATE_X METRIC COUNT_X SEQUENCE_NO FILE
------- ------- --------- ------- ---------- ----------- ----
JCI S1 28-JUN-10 PORT1 10 4 TNB
JCI S1 28-JUN-10 PORT2 4 4 TNB
JCI S1 28-JUN-10 PORT3 8 4 TNB
JCI S2 28-JUN-10 PORT1 1 2 TNB
JCI S2 28-JUN-10 PORT2 5 2 TNB
JCI S3 28-JUN-10 PORT1 6 8 TNB
JCI S5 28-JUN-10 PORT2 2 4 TNB
------->s5 only in the current month-it was not in the previous month data collection
-----------------------------------------------------------------------------
JCI S1 28-MAY-10 PORT1 10 3 TNB
JCI S1 28-MAY-10 PORT3 5 3 TNB
JCI S2 28-MAY-10 PORT1 4 1 TNB
JCI S2 28-MAY-10 PORT2 2 1 TNB
JCI S2 28-MAY-10 PORT3 8 1 TNB
JCI S3 28-MAY-10 PORT2 7 7 TNB
JCI S3 28-MAY-10 PORT3 5 7 TNB
JCI S4 28-MAY-10 PORT1 2 10 TNB
------->s4 in the previous month data
15 rows selected.
1 SELECT A.CUSTO,A.SWITCH,
2 A.PORT1-B.PORT1,
3 A.PORT2-B.PORT2,
4 A.PORT3-B.PORT3
5 FROM (SELECT
6 A.CUSTO
[Code] ......
CUSTO SWITCH A.PORT1-B.PORT1 A.PORT2-B.PORT2 A.PORT3-B.PORT3
------- ------- --------------- --------------- ---------------
JCI S1 0 4 3
JCI S2 -3 3 -8
JCI S3 6 -7 -5
How to include the Switch S4 and S5 in the output. how implemented FULL OUTER JOIN
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Sep 1, 2010
I need to populate a table based on the results of comparing sets of data. I decided to do this using MULTISET EXCEPT, but having created the structure, do not know whether it is actually possible, and if so, what syntax to use.
I have created:
CREATE OR REPLACE
TYPE NUMBER_TBL IS TABLE OF NUMBER;
/
CREATE OR REPLACE
TYPE PACKAGE_OPTION_GROUP_OBJ AS OBJECT( ID NUMBER, benefits NUMBER_TBL )
/
CREATE OR REPLACE
TYPE PACKAGE_OPTION_GROUP_TBL AS table of PACKAGE_OPTION_GROUP_OBJ
/
I have populated the following:
selectedTable PACKAGE_OPTION_GROUP_TBL := PACKAGE_OPTION_GROUP_TBL();
defaultTable PACKAGE_OPTION_GROUP_TBL := PACKAGE_OPTION_GROUP_TBL();
groupTable PACKAGE_OPTION_GROUP_TBL := PACKAGE_OPTION_GROUP_TBL();
comparisonTable PACKAGE_OPTION_GROUP_TBL := PACKAGE_OPTION_GROUP_TBL();
Once populated they contain the following data:
***selectedTable***
GROUP_ID : 121
BENEFITS : 161
---------------------------
GROUP_ID : 123
BENEFITS : 165
BENEFITS : 167
---------------------------
***defaultTable***
GROUP_ID : 121
BENEFITS : 161
---------------------------
GROUP_ID : 122
BENEFITS : 162
BENEFITS : 163
---------------------------
***groupTable***
GROUP_ID : 121
BENEFITS : 161
---------------------------
GROUP_ID : 123
BENEFITS : 165
BENEFITS : 166
---------------------------
I first need to compare the ID field only of selectedTable with defaultTable to find where they differ, something like
comparisonTable := selectedTable MULTISET EXCEPT(ID) defaultTable
I am expecting the result to be something like:
***comparisonTable***
GROUP_ID : 123
BENEFITS : 165
BENEFITS : 167
---------------------------
However, I don't know if this is possible and if so, what the syntax would be.
At a later stage, I will need to compare the benefits between selectedTable and groupTable, where the GroupID's match, which is why I have the tables structured in this way.
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Jul 11, 2013
I ran SPA for SQL workload of around 94 SQLs.In comparison report that is generated by SPA, there is a metrics "Top 94 SQL Sorted by Absolute Value of Change Impact on the Workload".
In this metrics there is a column "Impact on Workload". This column hold a value in percentage.how this is calculated by SPA. What formula is used by SPA to calculate "Impact on Workload".
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Mar 11, 2011
I am trying to compare the ranges of low pair and high pair,if they are within the range then source_conn_id should remain same,else it should be updated to null,which i had written it in else block.How can I implement the IF block and what to write in that block so that source_conn_id can remain the same.
SQL> CREATE OR REPLACE PROCEDURE fp_complements_src(p_id varchar2,ftr_con_id varchar2)
2 AS
3 BEGIN
4 FOR i IN(SELECT SOURCE_CONN_ID,LOW_PAIR,HIGH_PAIR FROM COMP_TEMP1 WHERE SOURCE_CONN_ID=ftr_con_id)
[Code]....
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Jul 5, 2012
Provide details about performance comparison between Oracle Sun Sparc 10 and IBM P7 server running oracle 11gR2 for OLTP system.
I know that licensing wise Sun will be much cheaper but i want to know other aspects such as performance, storage, transaction per second. Basically on a nut shell which server to buy for our OLTP system.
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Jul 5, 2010
value of "Shared Pool Free %" in v$sysmetric is larger than 100%
SQL> select value, group_id from v$sysmetric where metric_name = 'Shared Pool Free %';
VALUE GROUP_ID
186.45107 2
186.4685382 3
SQL> show parameter shared_pool
NAME TYPE VALUE
-------------- ------------ --
shared_pool_reserved_size big integer 832149913
shared_pool_size big integer 0
SQL> show sga
Total System Global Area 1.0155E+11 bytes
Fixed Size 2163880 bytes
Variable Size 8.1068E+10 bytes
Database Buffers 2.0401E+10 bytes
Redo Buffers 79310848 bytes
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Sep 25, 2008
When attempting to create the following table I recieve the error
count(m.mission_id) < 4
ERROR at line 9:
ORA-00905: missing keyword.
assist in order to resolve this error.
CREATE TABLE AM_agents
AS
(
SELECT
a.first_name || ' ' || a.last_name fullname,
'agent' person_type,
[code]...
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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
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Apr 17, 2013
My primary objective was to compare objects in schemas in two different databases and find out the differences, Execute DDL's in the database where objects are missing and syn schemas in two different databases.
So I need to compare schemas in databases. Which tool will be user friendly to make a comparison of database objects existing in schemas in two different databases.
I'd like to see if I can get a list of pro and cons between Toad and SQL Developer for comparing schemas pros and cons. How to make a comparison. I have some idea on using TOAD but was not familiar with SQL Developer.
Below is my requirement:-
Connect to Source
Connect to Target
Compare schemas with different object types
Find out differences
Generate DDL's for the missing objects or for the objects in difference report
Run them in missing instace(Source/Target)
Make sure both are in sync.
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May 25, 2011
Could it be that it's impossible to change the date format in the default_where clause?
The table column PROPOSAL_END in the database that I want to compare with, is in Format DD.MM.YYYY.
I tried:
set_block_property('Tours' , default_where, 'Number_of_places > 0 AND PROPOSAL_END <= ' || to_char(to_date(sydate,'DD.MM.YYYY')));
set_block_property('Tours' , default_where, 'Number_of_places > 0 AND PROPOSAL_END <= ' || to_char([-- A date item with the intial value $$date$$ the output is in Fomat DD.MM.YYYY by default --]));
set_block_property('Tours' , default_where, 'Number_of_places > 0 AND PROPOSAL_END <= ' || to_char(to_date([-- A date item with the intial value $$date$$ the output is in Fomat DD.MM.YYYY by default --],'DD.MM.YYYY')));
It all does dot matter. Every time the generated select-statement shows the format DD-MMM-YY. How can I change that?
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Apr 17, 2013
I have a below requirement to compare the development and production objects.if any association_type or association_role are not exists in production then i need to return a message like "the Type Object found in Development,but not Production"
Below is the tree structure
development
ProcessingSite(Association type1)
TreatingSite(role1)
MoodedActivity(role2)
MaterialName(role3)
production
ProcessingSite(Association type1)
TreatingSite(role1)
MaterialName(role2)
Processing Site is an association_type and it is having 3 association_roles. we can observe same association_type in the production, but Mooded Activity(association_role) is not available. in this case we need to return "Type Object found in Development,but not Production".
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Nov 4, 2013
We have migrated database data from physical servers to virtual servers. i want to ensure all database parameters are set correctly in both physical and vblock servers. My question is what are all the parameters need to check and compare in both servers to ensure database from both servers ( physical/vblock ) are in sync.
Database used -- RAC database
OS used -- RHL 5.7
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