PL/SQL :: How To Order By The Column

May 28, 2013

I have a varchar2 column which can hold numeric values, and also varchar2 values.

The following select returns only the records which have a number value in that column

select * from my_table
order by decode(
replace(translate(valoare,'1234567890.','00000000000'),'0',''), NULL,
valoare, 0 ) != 0;

But how can i order that column, so that first are the numbers (also ordered), and then the varchar2 columns (so all the rows of that table are selected, both varchar2 values and numbers in that column)? Is it possible?

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SQL & PL/SQL :: How To Get Order By A Column

Jun 17, 2013

I am one table create tt1(A varchar2(6),B number(5));

insert data in this column

tt1
A B
---------------
F1 1
F365 2
F10 3
F65 4
F55 5

Q. how to get order by a column. i wan't to

tt1
A
--------------------
F1
F10
F35
F65
F365

Q. how to get order by a column , i wan't to

tt1
A
--------------------
F0001
F0010
F0035
F0065
F0365

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Change Order Of A Column

May 23, 2013

In sql server we can able to change the order of a column but some says in oracle also we can do it. But as i think it is not possible.

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SQL & PL/SQL :: Order By In Date Column

May 20, 2013

I am trying group by count on Monthly basis, entered_timestamp Column is of DATE datatype.

select count(*),to_char(entered_timestamp,'MM-YYYY') MONTHLY from payments
where type = 'BOOK' group by to_char(entered_timestamp,'MM-YYYY') order by MONTHLY DESC

Above SQL doesn't gives the output in proper order ,

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PL/SQL :: Order By In Union Clause In Date Column

Nov 3, 2012

Oracle version : 11.2.0.2 Linux EL6 server

I have a query like below:

select col1, col2, col3, col4
from tab1, tab2, tab3
where conditions
union

[Code]...

Now, the col4 is a date column and I have to order by the entire result sets on it. I know I can do it by (order by col4) or by (order by 4) at the end of the entire query.

But the problem is that, the output is coming in dd-Mon-yyyy (i.e 31-Nov-2012).

I want every output in dd/mm/yyyy format so I need to use to_char function.

But in that case, I cant use the order by clause, because in that case it is getting arranged by character i.e by 1,2,3,4,5 like this.

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PL/SQL :: Order By Date Column With A Format Mask

May 16, 2013

10g- 10.2.0

This is my query

select to_char(exp_Date,'Mon-YYYY') dt, count(*) from exp_main
where exp_type like 'Income%Photo%'
group by to_char(exp_Date,'Mon-YYYY')
order by exp_date

When I run this I get :not a GROUP BY expression

If I remove the order by, it works fine.

Is there a way to order by since the output of the query is character-sorted.

I did search online most have suggested to use order by column_name. But does not work for me.

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Create A Separate Sort Order Column On Table

Oct 31, 2006

I have data that i am sorting, the data is mostly numeric (format of XXX-1234). is there any way to have my query sort xxx-1000 AFTER xxx-999? right now i am thinking i will have to create a separate sort order column on my table.

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Reports & Discoverer :: Order In Matrix Report Column

May 20, 2010

I have to set a matrix report as follow:

- in the rows the machine_id.
- in the column the material_lib.

Table material ( material_id,material_lib,ordre)
- in the cells quantity.

I get successfully my matrix through the wizard of report, but i should display the columns sorted with the field ordre.

how to get the columns of the matrix sorted.

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Application Express :: How To Change Column Order In Interactive Report

Oct 18, 2013

I am trying to change the column order in an Interactive Report. Run the report as a developer then use the action menu. 

However, I am not sure how one can run the the report as a developer.  Do you just login and run the page?  Then if I do that, I don't see the action menu there.  If I go to page attributes "Save Report" tab, I do see the action menu but "Select Columns" only gives me "Report Type", "Report Name" etc as columns. Or we don't have enough privileges to run the report as a developer? 

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Server Utilities :: SQL Loader - Excel File Different Column Order Format?

May 8, 2011

I have an Excel spreadsheet that just had a format change. The fourth column is new. Order of columns in Excel is:

oldcol1
oldcol2
oldcol3
oldcol4
newcol
oldcol5

Sqlldr script is in order of the .csv file just listed. Oracle table is in order

oldcol1
oldcol2
oldcol3
oldcol4
oldcol5
newcol

When I run the sqlldr script, the information is loaded:

oldcol1
oldcol2
oldcol3
oldcol4
newcol in oldcol5

so that all the information is loaded incorrectly. Out side of having to change the table, is there anything I can do to make it load correctly?

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Performance Tuning :: Index Usage In Order By Clause On Nullable Column

Jan 28, 2011

I came across situation where a Nullable column is not using index for 'order by' clause. I added Not Null condition in the 'where' condition but it wasn't useful. I don't wanted to make composite index with not nullable column or with constant or modify column to 'Not Null'

So I carried out test cases and during which I found that in one case the sql statement does 'fast full scan' for data access but does not use index for 'order by' sorting

here are the steps

Initially I kept the column Nullable

SQL> create sequence s5;
Sequence created.

SQL> create table t5 as select s5.nextval id,a.* from dba_objects a where rownum<1001;
Table created.

SQL> set pages 100
SQL> select column_name,nullable from user_tab_columns where table_name='T5';

SQL> create index i5 on t5(id);
Index created.

SQL> exec dbms_stats.gather_table_stats(user,'T5',cascade=>true);
PL/SQL procedure successfully completed.
exit

SQL> alter session set events '10046 trace name context forever, level 12';

select *
from
t5 where id is not null order by id

call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 68 0.00 0.00 0 16 0 1000
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 70 0.01 0.00 0 16 0 1000

Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 5

Rows Row Source Operation
------- ---------------------------------------------------
1000 SORT ORDER BY (cr=16 pr=0 pw=0 time=4771 us)
1000 TABLE ACCESS FULL T5 (cr=16 pr=0 pw=0 time=1157 us)

Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 68 0.00 0.00
SQL*Net message from client 68 49.49 49.72
********************************************************************************

select /*+ index(t i5) */ *
from
t5 t where id is not null order by id

call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 68 0.00 0.00 0 150 0 1000
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 70 0.00 0.00 0 150 0 1000

Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 5

Rows Row Source Operation
------- ---------------------------------------------------
1000 TABLE ACCESS BY INDEX ROWID T5 (cr=150 pr=0 pw=0 time=5167 us)
1000 INDEX FULL SCAN I5 (cr=71 pr=0 pw=0 time=3141 us)(object id 4673065)

Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 69 0.00 0.00
SQL*Net message from client 69 22.89 28.04

Now I modified the 'id' column to Not Null

SQL> alter table t5 modify id not null;

SQL> set pages 100
SQL> select column_name,nullable from user_tab_columns where table_name='T5';

COLUMN_NAME N
------------------------------ -
ID N
OWNER Y
OBJECT_NAME Y
SUBOBJECT_NAME Y
OBJECT_ID Y
DATA_OBJECT_ID Y
OBJECT_TYPE Y
CREATED Y
LAST_DDL_TIME Y
TIMESTAMP Y
STATUS Y
TEMPORARY Y
GENERATED Y
SECONDARY Y

14 rows selected.

select *
from
t5 order by id

call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.01 0 29 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 68 0.00 0.00 0 16 0 1000
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 70 0.01 0.01 0 45 0 1000

Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 5

Rows Row Source Operation
------- ---------------------------------------------------
1000 SORT ORDER BY (cr=16 pr=0 pw=0 time=2398 us)
1000 TABLE ACCESS FULL T5 (cr=16 pr=0 pw=0 time=1152 us)

Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 68 0.00 0.00
SQL*Net message from client 68 37.74 37.91
********************************************************************************

select /*+ index(t i5) */ *
from
t5 t order by id

call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 68 0.00 0.00 0 150 0 1000
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 70 0.00 0.00 0 150 0 1000

Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 5

Rows Row Source Operation
------- ---------------------------------------------------
1000 TABLE ACCESS BY INDEX ROWID T5 (cr=150 pr=0 pw=0 time=4166 us)
1000 INDEX FULL SCAN I5 (cr=71 pr=0 pw=0 time=3142 us)(object id 4673065)

Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 68 0.00 0.00
SQL*Net message from client 68 8.28 8.45

select id
from
t5 order by id

call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 68 0.00 0.00 0 6 0 1000
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 70 0.00 0.00 0 6 0 1000

Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 5

Rows Row Source Operation
------- ---------------------------------------------------
1000 SORT ORDER BY (cr=6 pr=0 pw=0 time=1342 us)
1000 INDEX FAST FULL SCAN I5 (cr=6 pr=0 pw=0 time=1093 us)(object id 4673065)

Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 68 0.00 0.00
SQL*Net message from client 68 1.88 1.89

Questions are

1) Why adding 'where id is not null wasn't enough for the index to get used in 'order by'?
2) While we got 'fast full scan' why index wasn't used for 'order by' clause?
3) Do we need the indexed column in where clause for being used in 'order by clause' too?
4) Do we need 'order by' clause if we are selecting only the indexed column with sequence generated values?

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Performance Tuning :: Order Of Steps In Execution Path And Order Of Predicates In The Plan

Mar 20, 2012

Which step in the following plan is the first step of execution

I reckon it is "TABLE ACCESS BY INDEX ROWID| BANK_BATCH_STATE"

Is that correct?

In the "Predicate Information (identified by operation id):"

section the predicates - access and filter for the step "TABLE ACCESS FULL | PYMNT_DUES" are displayed first

Isn't there any relation between the order of execution steps and the order in which predicates are displayed?

Execution Plan
----------------------------------------------------------
Plan hash value: 538700484
-------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
-------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 2364 | 15 (14)| 00:00:01 |
|* 1 | FILTER | | | | | |
| 2 | HASH GROUP BY | | 1 | 2364 | 15 (14)| 00:00:01 |
| 3 | NESTED LOOPS | | 1 | 2364 | 14 (8)| 00:00:01 |
| 4 | NESTED LOOPS | | 1 | 2313 | 13 (8)| 00:00:01 |
| 5 | NESTED LOOPS | | 1 | 2281 | 12 (9)| 00:00:01 |
| 6 | NESTED LOOPS OUTER | | 1 | 2255 | 11 (10)| 00:00:01 |
|* 7 | HASH JOIN | | 1 | 175 | 6 (17)| 00:00:01 |
|* 8 | INDEX RANGE SCAN | INDX_2 | 12 | 612 | 2 (0)| 00:00:01 |
|* 9 | TABLE ACCESS FULL | PYMNT_DUES | 43 | 5332 | 3 (0)| 00:00:01 |
| 10 | VIEW PUSHED PREDICATE | | 1 | 2080 | 5 (0)| 00:00:01 |
| 11 | NESTED LOOPS | | 1 | 154 | 5 (0)| 00:00:01 |
| 12 | NESTED LOOPS | | 1 | 103 | 4 (0)| 00:00:01 |
|* 13 | TABLE ACCESS BY INDEX ROWID| BANK_BATCH_STATE | 1 | 32 | 2 (0)| 00:00:01 |
|* 14 | INDEX RANGE SCAN | INDX_BBS_1 | 3 | | 1 (0)| 00:00:01 |
|* 15 | TABLE ACCESS BY INDEX ROWID| DAILY_CHECK | 1 | 71 | 2 (0)| 00:00:01 |
|* 16 | INDEX RANGE SCAN | INDX_SEARCH | 1 | | 1 (0)| 00:00:01 |
|* 17 | INDEX RANGE SCAN | INDX_2 | 1 | 51 | 1 (0)| 00:00:01 |
|* 18 | INDEX RANGE SCAN | INDX_IAM_SR_NO | 1 | 26 | 1 (0)| 00:00:01 |
|* 19 | INDEX RANGE SCAN | INDX_2 | 1 | 32 | 1 (0)| 00:00:01 |
|* 20 | INDEX RANGE SCAN | INDX_2 | 1 | 51 | 1 (0)| 00:00:01 |
-----------------------------------------------------------------

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SQL & PL/SQL :: Result Order In 2 Table Joins Without Order By

Sep 6, 2011

I have below tables,

describe rpthead

Name Null Type
--------------------------- -------- -------------
RPTNO NOT NULL NUMBER
RPTDATE NOT NULL DATE
RPTD_BY NOT NULL VARCHAR2(25)
PRODUCT_ID NOT NULL NUMBER

describe rptbody

Name Null Type
------------- -------- -------------
RPTNO NOT NULL NUMBER
LINENO NOT NULL NUMBER
COMMENTS VARCHAR2(240)
UPD_DATE DATE

The fact is that we store some header in RPTHEAD and store real data in RPTBODY, the question is that if I use below SQL to query all data for a 'PRODUCT_ID'.

SELECT t0.LINENO, t0.COMMENTS, t0.RPTNO, t0.UPD_DATE
FROM RPTBODY t0 , RPTHEAD rpthead
WHERE
(
t0.RPTNO = rpthead.RPTNO
AND
t0.UPD_DATE>=to_date('1970/01/01 00:00:00','YYYY/MM/DD hh24:mi:ss')
AND
rpthead.PRODUCT_ID IN ('4647')
)

I do not want to have 'ORDER by' clause since data set is too large, the sorting takes long time, is there any way to get the result rows in the order sorted by RPTNO? We have the index for RPTNO on RPTBODY.

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SQL & PL/SQL :: Order By With IN

May 24, 2010

Its a very small query

SELECT * from EMPLOY
WHERE fk_dept_id IN ( select id
from DEPARTMENT
ORDER BY END_DT DESC)

I cant use IN.

NOTE: Select * should be done from Employ only no joins and all.

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SQL & PL/SQL :: ORDER BY In A Particular Order

Jul 17, 2012

oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
PL/SQL Release 11.1.0.6.0 - Production
"CORE 11.1.0.6.0 Production"

I have data like:-

event_idiss_nbr
171350 2012051WR
171350 2012041WR
171350 2011081CC
171350 2012041WA
171350 2012031WW
171350 2011081WW
171350 2011081CR
171350 2011081CA

The possible last two characters of the iss_nbr can be:-

WW, WR,WA,CR,CA,CC

And I want it to be ORDER BY as follows.

WR
WA
CR
CA
WW
CC

So for example, in above case, it should be

event_idiss_nbr
171350 2012051WR
171350 2012041WR
171350 2012041WA
171350 2012031WW
171350 2011081CR
171350 2011081CA
171350 2011081WW
171350 2011081CC

How can I do it while loading the table?

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SQL & PL/SQL :: Order By Row ID

Mar 20, 2012

I am having table without any primary key. In this table, only inserts and deletes are performed , no update operation.

Is it safe to use order by rowid on such a table ? Does by applying order rowid, is it possible to check order in which rows were inserted in this table ?

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Select Vs Order By

Nov 9, 2006

In a query which gets executed first:

Select clause or Order by clause? First the columns specified in the select clause are fetched and then ordered or is it the vice -versa? In a query if a psuedo-column rownum is selected, then if we use order by on the rownum column, what happens?

What would be the output of the following query and why?Which part of the query is first executed, is it select clause or order by clause?

select empno,ename,rownum from emp order by rownum desc;

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Tab Order On A Form

Feb 25, 2010

I am having trouble with tab order on a Form.

I rearranged the fields on a form, so I want the tab order to be different. I rearranged the fields in the object navigator to be in the order I want them to tab. I made sure the Previous Navigation Item and Next Navigation Item were set to null for all the fields.

Still it keeps the old tab order.

I also tried explicitly specifying the Previous Navigation Item and Next Navigation Item. Same thing, it kept the old tab order before I rearranged the fields. Previous Navigation Item and Next Navigation Item are both null.

There are no triggers on these fields. All fields are in the same block. I am using Oracle Form Builder version 9.

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SQL & PL/SQL :: Use Of Order By In Varchar2

Feb 21, 2011

I have a column named "col1" with datatype "varchar2(10)" and row wise entries like "1,1A, 2,3...,10,2A,..." like. I want to order it like "1, 1A ,2,2A, 2B,3... 10...".I tried it with to_number() but it gives me

1,10,11,2,....like that.

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SQL & PL/SQL :: Order By Clause?

Mar 12, 2013

I have requirement to create an XML structure through stored procedure. I need to Order some of the columns in ascending order before I format them into the xml structure. I am pretty novice to creating an output into XML format, but attached is the query I came up with (without order by). This works perfect, but now the requirement is to order by - cls_cd, and within cls_cd, again order by - cat_cd. I am not able to do this.

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SQL & PL/SQL :: Order By Alphanumeric?

Aug 1, 2012

create table x(
sno varchar2(5)
);

insert into x values('A-1');
insert into x values('B-1');
insert into x values('B-2');
insert into x values('B-3');
insert into x values('1');
insert into x values('A-2');
insert into x values('2');
insert into x values('3');
insert into x values('A-4');
insert into x values('B-4');
insert into x values('C-4');
insert into x values('D-4');

SQL>select * from x;

SNO
-----
A-1
B-1
1
A-2
2
3
A-4
B-4
C-4
D-4
B-2
B-3

How can I select it ike this

1
A-1
A-2
A-4
B-1
2
B-2
3
B-3
B-4
C-4
D-4

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PL/SQL :: Order By Month Name

Jun 20, 2012

I've got a TRANSACTION table with about 4, 681 transactions going on over the course of a given year (this is a project for my DB class). I'm trying to create a query that will give the base revenue for each month in that year; so far I've come up with the following:

SELECT DISTINCT
CASE
WHEN EXTRACT(MONTH FROM transaction_date) = 1 THEN 'JAN' || ' ' || EXTRACT(YEAR FROM transaction_date)
WHEN EXTRACT(MONTH FROM transaction_date) = 2 THEN 'FEB' || ' ' || EXTRACT(YEAR FROM transaction_date)
WHEN EXTRACT(MONTH FROM transaction_date) = 3 THEN 'MAR' || ' ' || EXTRACT(YEAR FROM transaction_date)
WHEN EXTRACT(MONTH FROM transaction_date) = 4 THEN 'APR' || ' ' || EXTRACT(YEAR FROM transaction_date)
[code]....

The query returns twelve months, but they're all jumbled up. I tried extracting the month in the ORDER BY subclause

ORDER BY EXTRACT(MONTH FROM TO_DATE(month, 'MM YYYY'));

But I got an ORA-01866: the datetime class is invalid. I'm using Oracle 10g xe (outdated, I know). get the months to show up in order?

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PL/SQL :: Order By With Union?

Aug 24, 2012

I have the following sql

select htf.escape_sc(su.sukey) a, htf.escape_sc(su.sukey) b
from udm_su su, udm_lde lde
where su.ldeid = lde.ldeid
and su.sukey in (select su_generic
 
[code]...

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PL/SQL :: Order By On Datafile Name

Sep 4, 2013

I am using 11GR2 and looking to find out a way , where in I able to extract the data files name in such a manner , where it lists data file in order of mount points. say data1 first and then so on.. Snippet from my data files

output. /db/ptmtrain/data1/system01.dbf/db/ptmtrain/data2/sysaux01.dbf/db/ptmtrain/data1/undotbs01.dbf/db/ptmtrain/data3/tools01.dbf/db/ptmtrain/data24/users01.dbf/db/ptmtrain/data25/users02.dbf/db/ptmtrain/data26/users03.dbf/db/ptmtrain/data2/rbs01.dbf/db/ptmtrain/data3/rbs02.dbf/db/ptmtrain/data2/rbs03.dbf/db/ptmtrain/data23/sans01.dbf 

should be something

like /db/ptmtrain/data1/system01.dbf/db/ptmtrain/data1/undotbs01.dbf/db/ptmtrain/data2/sysaux01.dbf/db/ptmtrain/data2/rbs03.dbf/db/ptmtrain/data2/rbs01.dbf/db/ptmtrain/data3/tools01.dbf/db/ptmtrain/data3/rbs02.dbf/db/ptmtrain/data23/sans01.dbf/db/ptmtrain/data24/users01.dbf/db/ptmtrain/data25/users02.dbf/db/ptmtrain/data26/users03.dbf  

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SQL & PL/SQL :: Order By For VARCHAR2

Sep 28, 2010

create table members(
memberID varchar2(7),
locationID number(5),
roomID varchar2(5)
)
/

[Code]....

MEMBERI LOCATIONID ROOMI
------- ---------- -----
2007209 1 1
2006253 1 1-A
2006253 1 1-A
2006265 1 1-B
2006240 1 1-C
2005064 1 1-D
2007836 1 100
2007211 1 101
2007075 1 102
2007110 1 105

[Code]...

Function created.

SQL> select * from members
2 order by safe_to_number(roomID);

MEMBERI LOCATIONID ROOMI
------- ---------- -----
2007209 1 1
2007185 1 2
2007089 1 3
2007023 1 4

[Code]....

How can I sort the output to get the result like below

2007209 1 1
2006253 1 1-A
2006253 1 1-A

[Code]...

and so on...

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SQL & PL/SQL :: Order By Month

Jan 31, 2013

How I can see the order by employees,year wise and monthwise (month should start from january and so on..)

SELECT ENAME,TO_CHAR(HIREDATE,'yyyy') YEAR,TO_CHAR(HIREDATE,'Month') MONTH ,count(*) total
FROM EMP
GROUP BY TO_CHAR(HIREDATE,'yyyy') ,TO_CHAR(HIREDATE,'Month');

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PL/SQL :: First Clause With Order By

Apr 29, 2013

I have a requirement where I need to display a list of employees, performance rating and manager id. I want to display the employees first whose manager is as manager_id as input parameter. So lets say a manager logs in, he should see his reporters first and then the rest. How can I implement this in SQL? I am trying first clause with order by but not sure how to do that here.

procedure
display_list(manager_id in varchar2)

Output is:
emp_id
manager_id
performance_rating

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Order By In Oracle With Priority?

Nov 23, 2012

I have a table (emp) with three columns in ORACLE:

COMPANY OFFICE EMP
------------------------
9999 00001 emp1
9999 00001 emp2
9999 00002 emp3
9999 00002 emp4

[code]...

I want to get value in EMP column with following statement:
-------------
SELECT
EMP
FROM
emp
ORDER BY COMPANY (But 9999 is first), OFFICE (But 99999 is first).
-------------

I don't know how to do.

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Sep 9, 2010

I have a query with order by clause, which takes 30 sec to execute with order by clause. And if i remove the order by clause it executes within 1 sec.

The column in the order by condition has index. but when i see Explain plan output. it doesn't show this index is being used. I tried to execute query with INDEX hint but still explain plan is not showing this index.

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Group By With Order By For Dates?

Mar 9, 2013

ii have written a query like thi:

select to_char(order_date,'mon-yyyy') "months", sum(nob) "number of bags"
from p_in where order_date between '1-apr-11 and '31-mar-12'
group by to_char(order_date,'mon-yyyy')

the above query returns me a resultset which gives me number of bags sold in every month, but it does not sort the month in their chronological order. i want to sort my resultset in ascending order of month s.,means jan-feb-march-apr-may ams so on...QUOTE

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