MySQL SQL Question

OK fellas. Gentle on the newbie.
I have my datasource set up, I have the MySQL Query Browser
working and I'm poking around a bit with the World dB tables.
I can't seem to get why this:
SELECT * FROM countrylanguage c; ORDER BY IsOfficial;
isn't doing a thing. No error, but it surely doesn't seem to
be alphabetizing on IsOfficial.
Thanks!
Rick

Try adding ASC or DESC to the end of it.
Brendon
"webspinner" <[email protected]> wrote in
message
news:eo6akr$2r7$[email protected]..
> OK fellas. Gentle on the newbie.
>
> I have my datasource set up, I have the MySQL Query
Browser working and
> I'm
> poking around a bit with the World dB tables.
>
> I can't seem to get why this:
> SELECT * FROM countrylanguage c; ORDER BY IsOfficial;
>
> isn't doing a thing. No error, but it surely doesn't
seem to be
> alphabetizing
> on IsOfficial.
>
> Thanks!
>
> Rick
>

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SQL Question Bank and Answers for Practise

Dear Readers:
Does any one have any recommendation on SQL question bank and answers where I could practice my SQL.
I have developed some basic knowledge of SQL thanks to the MS community, but I am looking for some additional Questions or textbook recommendations which has questions and answers to queries for practice.
Best Wishes,
SQL75

Hi,
Refer below post.
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/446b2247-5124-49c1-90c9-b7fea0aa4f83/sql-dba-books?forum=sqlgetstarted
Please mark solved if I've answered your question, vote for it as helpful to help other users find a solution quicker
Praveen Dsa | MCITP - Database Administrator 2008 |
My Blog | My Page

Sql question : TRUNCATE vs Delete

hi
this is sql question, i don't know where i should post it, so here it is.
i just want to know the best usage of each. both commands delete records in a table, one deletes all, and the other can do the same plus option to delete specified records. if i just want to purge the table. which one is better and why? thanks

this is crucial to my design, i need to be able to
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Caution: You cannot roll back a TRUNCATE statement.
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Urgent SQL question : how to flip vertical row values to horizontal ?

Hello, Oracle people !
I have an urgent SQL question : (simple for you)
using SELECT statement, how to convert vertical row values to horizontal ?
For example :
(Given result-set)
MANAGER COLUMN1 COLUMN2 COLUMN3
K. Smith ......1
K. Smith ...............1
K. Smith ........................1
(Needed result-set)
MANAGER COLUMN1 COLUMN2 COLUMN3
K. Smith ......1 .......1 .......1
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scott@ORA92> column vice_president format a30
scott@ORA92> SELECT f.VICE_PRESIDENT, A.DAYS_5, B.DAYS_10, C.DAYS_20, D.DAYS_30, E.DAYS_40
2 FROM   (select t2.*,
3               row_number () over
4                 (partition by vice_president
5                  order by days_5, days_10, days_20, days_30, days_40) rn
6           from   t2) f,
7          (SELECT T2.*,
8               row_number () over (partition by vice_president order by days_5) RN
9           FROM   T2 WHERE DAYS_5 IS NOT NULL) A,
10          (SELECT T2.*,
11               row_number () over (partition by vice_president order by days_10) RN
12           FROM   T2 WHERE DAYS_10 IS NOT NULL) B,
13          (SELECT T2.*,
14               row_number () over (partition by vice_president order by days_20) RN
15           FROM   T2 WHERE DAYS_20 IS NOT NULL) C,
16          (SELECT T2.*,
17               row_number () over (partition by vice_president order by days_30) RN
18           FROM   T2 WHERE DAYS_30 IS NOT NULL) D,
19          (SELECT T2.*,
20               row_number () over (partition by vice_president order by days_40) RN
21           FROM   T2 WHERE DAYS_40 IS NOT NULL) E
22 WHERE f.VICE_PRESIDENT = A.VICE_PRESIDENT (+)
23 AND    f.VICE_PRESIDENT = B.VICE_PRESIDENT (+)
24 AND    f.VICE_PRESIDENT = C.VICE_PRESIDENT (+)
25 AND    f.VICE_PRESIDENT = D.VICE_PRESIDENT (+)
26 AND    f.VICE_PRESIDENT = E.VICE_PRESIDENT (+)
27 AND    f.RN = A.RN (+)
28 AND    f.RN = B.RN (+)
29 AND    f.RN = C.RN (+)
30 AND    f.RN = D.RN (+)
31 AND    f.RN = E.RN (+)
32 and    (a.days_5 is not null
33           or b.days_10 is not null
34           or c.days_20 is not null
35           or d.days_30 is not null
36           or e.days_40 is not null)
37 /
VICE_PRESIDENT                     DAYS_5    DAYS_10    DAYS_20    DAYS_30    DAYS_40
Fedele Mark                                                          35473      35209
Fedele Mark                                                          35479      35258
Schultz Christine                              35700
South John                                                                      35253
Stack Kevin                                    35701      35604      35402      35115
Stack Kevin                                    35705      35635      35415      35156
Stack Kevin                                    35706      35642      35472      35295
Stack Kevin                                    35707      35666      35477
Stack Kevin                                               35667      35480
Stack Kevin                                               35686
Unknown                             35817      35698      35596      35363      35006
Unknown                                        35702      35597      35365      35149
Unknown                                        35724      35599      35370      35155
Unknown                                                   35600      35413      35344
Unknown                                                   35601      35451      35345
Unknown                                                   35602      35467
Unknown                                                   35603      35468
Unknown                                                   35607      35475
Unknown                                                   35643      35508
Unknown                                                   35644
Unknown                                                   35669
Unknown                                                   35684
Walmsley Brian                                 35725      35598
23 rows selected.

General SQL question

I have seen the following in some sql, but not sure of the difference.
select abc, NULL from xyz where .....
select abc, to_char(NULL) from xyz where ....
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Thanks.

BluShadow wrote:
Looks like someone was trying to cast the null to a varchar2 datatype so that SQL knew the datatype of the column. In that case they should have used the CAST function...
Blu:
Just out of curiosity, any particular reason for the preference for cast instead of to_datatype(null)? I often use that construct, particularly in union type queries. The cast is sematically meaningless in a union query since the column will get the size of the largest column in the query.
SQL> set null null
SQL> select *
2 from (select 1 id, null c1, to_char(null) c2, cast(null as varchar2(10)) c3 from dual
3        union all
4        select 2, 'Hello there', 'Hello there', 'Hello there' from dual);
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2 select *
3 from (select 1 id, null c1, to_char(null) c2, cast(null as varchar2(10)) c3 from dual
4        union all
5        select 2, 'Hello there', 'Hello there', 'Hello there' from dual);
View created.
SQL> desc v;
Name               Null?    Type
ID                          NUMBER
C1                          VARCHAR2(11)
C2                          VARCHAR2(11)
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John

SQL Questions (New to Cisco)

Hello. I work for Clarian Health in Indianapolis and am trying to learn as much as possible about the SQL databases, both AWDB and HDS so that I can handle the reporting for our Revenue Cycle Customer Service.
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3. When data is moved to the HDS server every 30 minutes, is it also removed from the corresponding AWDB table?
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6. Why doesn't the LoggedOnTimeToHalf field on both the Agent_Half_Hour table and the Agent_Skill_Group_Half_Hour table have the same value in them?
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Thank you.
Angie Combest
Clarian Health
[email protected]

You need to be careful when looking at the three databases - Logger, AW, HDS - which use the same schema. But many of what appear to be tables in the AW are really views into the t_ tables in the HDS - the data is not there in the AW DB. You are right to look at the schema - but check with SQL Enterprise to understand a bit more.
In essence, the AW DB is for configuration data and real-time data. The HDS is for historical data. You can query the AW DB for (say) Call_Type_Half_Hour data and join with the Call_Type table to resolve the call type ID into its name - but the data is really in the HDS through the view.
The DB design is quite complex and sophisticated - many things are not obvious.
Keep up your research.
Regards,
Geoff

How can I convert a mysql sql script to a oracle sql script

Hi,
We have a bunch of tables with data running on a mysql server.
This should now be moved to an oracle 9 db.
are there any tools to convert the import script of a mysql db
to a format of the sql script that work for oracle ?
Thanks
Michael

Oracle has a tool called Migration Toolbench, which supports MySQL 3.22 and 3.23:
http://otn.oracle.com/tech/migration/workbench/content.html
On this same topic, I was wondering if anybody has tried migrating from PostgreSQL to Oracle 9i. The workbench doesn't seem to support it, and feeding a pg_dump file directly into SQL*Plus is not working.

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Hi,
I have a sql that looks like the following:
insert into INVALID_DATES_TMP
(id, gid, created, t_rowid, updated)
select id, gid, created, rowid, updated
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COMMIT;
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ThankYou,
Radhika.

Hallo,
in general INSERT AS SELECT is the fastest method to insert into the table.
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I have a scenario:
There are 2 tables (parent and child). lets say, case summary table and task level dimension table.
for every case id in case summary table, there would be multiple tasks in task level dim table with a flag indicator set to 1 for all tasks.
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1001, admin, Ram
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1001, 1, 'New', 1
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Thanks!

may be you need just this:
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MySQL /JDBC Question

I began playing with JDBC a few days ago. I set up a database using mySQL and wrote a simple java program that will connect to it. Works good from the computer that holds the database.
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try
Class.forName("com.mysql.jdbc.Driver");
catch (Exception e)
JOptionPane.showMessageDialog(null, "ERROR = " + e.getMessage());
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Say I want to make a simple web applet that will
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SQL question - please help!

Hi,
I am working on a SQL, please help ms with the question
below .... thanks
(1)Increase by 10% salary of these captain pilots who have
traveled more than 800,000 miles.
Routes | | Flights | |Pilots |
| | | | |
#routeID | | #flightNO | |#pilotID |
depAirportID |        | airplaneNO| |*name |
arrAirportID |_______/| pilotID |\___________|*hours_in_air|
length       |       \| routeID |/ |*grade |
______________| |_____________| |*salary |
|____________|

If the length column in routes is in hours, and it represents
additional hours to those shown in hours_in_air in pilots, then
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FROM pilots a,
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      WHERE b.routeid = c.routeid
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the sub-query from flights and routes to take into account only
flights since the hours_in_air column from pilots was last
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hours_in_air is updated, then the query above will work.

SQL Question (Select rows with multiple records)

Hello Gurus,
I am learning SQL and have a question. Thanks for your time and help.
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TABLE_AA
~~~~~~~
AA_ID______AA_DATA
~~~~~~~~~~~~~~~~
1111_______XXXX
2222_______QQQQ
3333_______ZZZZZ
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TABLE_BB
~~~~~~~
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~~~~~~~~~~~~~~~~
1111_______AAAA
2222_______BBBB
3333_______CCCC
3333_______DDDD
4444_______EEEE
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AA_ID_____BB_ID
~~~~~~~~~~
3333______CCCC
3333______DDDD

Hi,
It's working fine. !!
14:10:05 topgun>With a As
14:10:06   2   (
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14:10:06   4    Select 2222 ,   'BBBB'    From dual Union All
14:10:06   5    Select 3333 ,   'CCCC'    From dual Union All
14:10:06   6    Select 4444 ,   'DDDD'    From dual
14:10:06   7   ), b As
14:10:06   8    (
14:10:06   9    Select 1111 c1,'AAAA' c2 From dual Union All
14:10:06 10   Select 2222 , 'BBBB'    From dual Union All
14:10:06 11   Select 3333 , 'CCCC'    From dual Union All
14:10:06 12   Select 3333 , 'DDDD'    From dual Union All
14:10:06 13   Select 4444 , 'EEEE'    From dual
14:10:06 14    )
14:10:06 15   Select c1,
14:10:06 16           c2
14:10:06 17     From
14:10:06 18       (
14:10:06 19       Select a.c1,
14:10:06 20              b.c2,
14:10:06 21             Count(*) over (Partition By a.c1 Order By a.c1) cnt
14:10:06 22      From a,
14:10:06 23             b
14:10:06 24       Where a.c1 = b.c1
14:10:06 25        )
14:10:06 26   Where cnt = 2;
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      3333 CCCC
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SQL question for to get a top customer

Hi All,
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The error is like this:
*Error starting at line 1 in command:
select calendar_year,cust_first_name,max(sum(amount_sold)) from sales,times,customers where sales.cust_id=customers.cust_id and times.time_id=sales.time_id group by calendar_year,cust_first_name
Error at Command Line:1 Column:7
Error report:
SQL Error: ORA-00937: not a single-group group function
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*Cause:
Action:
Thanks inadvace
Regards,
prasanna

It is not clear what you want. Code below will return a customer with highest total amout sold regardless of year:
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from (
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                 row_number() over(order by sum(amount_sold) desc) rn
           from sales,
                 times,
                 customers
           where sales.cust_id=customers.cust_id
             and times.time_id=sales.time_id
           group by calendar_year,
                 cust_first_name
where rn = 1
/Keep in mind, if more than one customer has that highest total amount sold and you want all such customers:
select calendar_year,
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        total_amount_sold max_amount_sold
from (
         select calendar_year,
                 cust_first_name,
                 sum(amount_sold) total_amount_sold,
                 rank() over(order by sum(amount_sold) desc) rn
           from sales,
                 times,
                 customers
           where sales.cust_id=customers.cust_id
             and times.time_id=sales.time_id
           group by calendar_year,
                 cust_first_name
where rn = 1
/And if you want top customer for each calendar year:
select calendar_year,
        cust_first_name,
        total_amount_sold max_amount_sold
from (
         select calendar_year,
                 cust_first_name,
                 sum(amount_sold) total_amount_sold,
                 row_number() over(partition by calendar_year order by sum(amount_sold) desc) rn
           from sales,
                 times,
                 customers
           where sales.cust_id=customers.cust_id
             and times.time_id=sales.time_id
           group by calendar_year,
                 cust_first_name
where rn = 1
/Keep in mind, if more than one have that highest total amount sold and you want all such customers:
select calendar_year,
        cust_first_name,
        total_amount_sold max_amount_sold
from (
         select calendar_year,
                 cust_first_name,
                 sum(amount_sold) total_amount_sold,
                 rank() over(partition by calendar_year order by sum(amount_sold) desc) rn
           from sales,
                 times,
                 customers
           where sales.cust_id=customers.cust_id
             and times.time_id=sales.time_id
           group by calendar_year,
                 cust_first_name
where rn = 1
/SY.
Edited by: Solomon Yakobson on Dec 22, 2011 9:24 AM

Quick MySQL Indexing question

Hi all,
I know this is not strcitly a JDBC problem, but i was wodering if you have any ideas anyhow...
I've implemented an Index on two of my columns in a table in my MySQL db. My question is, when i insert new rows into the database, is the index automatically updated? If not, how do I go about updating the Index?
Many thanks,
BBB

I thought the database would manage that for you. AFAIK, you don't have to do anything. That's the way it is in Oracle. I thought that was true for all RDBMS. - MOD

Abap SQL question

Hi,
I need to select the set of records only in Table A, but not in Table B. I think that the correct SQL is:
select k~vbeln
into data
from vbak as k
inner join vbfa as f on kvbeln = fvbelv
where f~vbelv is null.
But the following message appears: u201CNo fields from the right-hand table of a LEFT OUTER JOIN may appear in the WHERE condition: u201CF~VBELBu201Du201D.
Thanks in advance,
Ricard.

Hi Oscar & William,
first of all: The database meaning of NULL is that for the field in question no value is stored for an existing record.
In SAP tables we rarely have any NULL values. Only if you extend an existing table, i.e. append a new field, the database will expand the structure but not store INITIAL values for the new field in all records.
Second, just a hint: although the SAP example uses the mystifying ALIAS (AS) addition for joins, it does not help except reducing the code transparency:
SELECT vbak~vbeln
       INTO lw_data
       FROM vbak
       INNER JOIN vbfa ON vbak~vbeln = vbfa~vbelv
       WHERE vbfa~vbelv IS NULL.
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ENDSELECT.
Is 100 % the same. Nevertheless it will never retrieve a single record because vbelv is never stored as a NULL value.
I think this can be solved using a subquery
DATA : lt_data TYPE table of vbak-vbeln.
SELECT vbeln
       INTO lt_data
       FROM vbak
       WHERE NOT EXISTS
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ENDSELECT.
To be honest: I did not try the code, never played with subqueries though I should do so.
Regards,
Clemens

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