PL/SQL :: Same Alias For 2 Tables / A Table Without Join in A Query?
Jan 24, 2013
In a query can we have the same alias for more than 1 table as in the following example
Select C.ContractNum, B.Billnum, B.Billamt,A.
From Contractmaster C,
Billdetails B,
Address A,
Currencymaster c,
Where B.billtype = 1
and C.Contractnum = B.Contractnum
and C.customerref = A.Customerref
and c.currencycode ='EUR'
In the above query, Table Contractmaster has an alias C --in capitals while table Currencymaster has an alias c - in small caps ...
Is this possible in Oracle 11g ? Also i found that the table Currencymaster has no Join conditions I executed the query, without any errors!
Table Two TableTwoId Name 1 Jones 2 Smith 3 Edwards 4 Camden
My SQL to fetch all records with Smith works great:
select Name from TableTwo Inner Join TableOne on TableTwo.TableTwoId in (TableOne.pocOne, TableOne.pocTwo) where Name = 'Smith'
Now I need to create an alias for the Name field. Here is my attempt:
select myAliasName from TableTwo Inner Join TableOne on TableTwo.TableTwoId in (TableOne.pocOne, TableOne.pocTwo), (select Name as myAliasName from TableTwo) where myAliasName = 'Smith'
This attempt pulls up all the records instead of just Smith records. How I can create an alias for the Name field in my above query?
How does one select * from one table without selecting * from other tables that are included in a query? For example, if in the query below I want to view all fields in some_table, but not the fields from other_table, how do it?
select * from some_table st, other_table ot where st.id = ot.id
I have a need to use the Alias name of a column within the same select statement( because I can't have another select statement using the first select as table - BO tool limitation).
Ex:
Select dept_id, agency, sum(quantity) as "sum_qty" where sum_qty > 500;
Currently oracle won't allow using alias name Sum_qty in the same select statement. Is there a way to use alias within the same select statement?
We have a query which uses start by and connect with method. this query works fine in our earlier version 10. But when we migrated to 11g, we are facing problem with the query.
Scenario 1: ------------ There is a table in Schema 1 and created a view for the same.
Table : create table alias_test1 ( A varchar2(10),B varchar(10),C varchar2(20),D varchar2(40), E varchar2(10),F number(1)); View: create or replace view alias_vw1 as select A, B,C,D, E,F from alias_test1
Values : Insert into A.ALIAS_TEST1 (A, B, C, D, E, F) Values ('Block1', '136', 'TOTBANK', 'Total Bank', ' ', 1); Insert into A.ALIAS_TEST1 (A, B, C, D, E, F) Values ('Block2', '136', 'PPRSEGHKB', 'HKB', 'TOTBANK', 2);
Now in the schema B, created a synonym for the view to access. create synonym alias_vw1 for alias_vw1@link.world
I am getting [Error] PLS-00402 (182: 1): PLS-00402: alias required in SELECT list of cursor to avoid duplicate column names error in my SP.I have created alias for each column and still i am getting the error.
for my_rec_lot in (SELECT LLP.BOOK_VALUE LLP_BOOK_VALUE,LLP.COMMISSION LLP_COMMISSION,LLP.CURRENCY LLP_CURRENCY,LLP.EXCHANGE_RATE LLP_EXCHANGE_RATE,LLP.EXPENSES LLP_EXPENSES,
I saw a strange plan for one query in TESTING DB today. Although 2 tables are involved i dont see any join , NL/HJ/SMJ !! i am not facing any performance issue but curious to know what type of optimization oracle is doing here.
Query text and plan : SELECT FIRST_NAME FROM CAMPA.TABLE_A WHERE NAME_ID = (SELECT NAME_ID FROM CAMPA.TABLE_B WHERE ban=:b1); [code]....
I have two primary key values based on that I would need to query at least 25+ tables(each of these tables might have both primary key columns or either one to query) to extract data for my 150 columns and load it onto my target table.
I have a query regarding nested tables while exporting. Are we not allowed to use Query clause during the export of nested table?
I am getting the error: "EXP-00053: unable to execute QUERY on table NT_LP_COREBAL_MAINT because the table has inner nested tables Export terminated successfully with warnings."
The exp command we are using is: exp XXXX/XXXX@XXXX file=test1.dmp log=test1.log tables=nt_lp_corebal_maint query='where domain_id=10110307'.
I am interested if there maybe exists any function that would return all source tables that are present in the given sql. For example function('select 'abc' from table_1, table2') would return a list containing 'table_1' and 'table_2'.
The code was originally an MS Access Query with linked tables to the Oracle DB however trying to remove the need for access and have it drop directly into Excel using Recordset.
SELECT SWPRO.CASE_INFORMATION.CASEDESC, SWPRO.OUTSTANDING_MAIL.CASENUM, CASE_DATA_1.FIELD_VALUE, SWPRO.OUTSTANDING_MAIL.SENTDATE, SWPRO.OUTSTANDING_MAIL.DEADDATE FROM
create a procedure so that I could get minus query of 2 table as a result.
I have two table 1- src_table_list ,2- tgt_table_list both tables have 2 columns : serial_no,table_name and 100 records each. and details mentioned in column "table_name" are actually tables name which present in my testing database.
so I need one procedure which will pick one table_name from src_table_list and one table_name from tgt_table_name each time recursively and provide minus query as a result. as below.
select c1,c2,c3,c4 from table1 --(fetched from src_table_list) minus select b1,b2,b3,b4 from table2 --(fetched from tgt_table_list)
create the procedure..as I have to prepare minus query for more than 200 tables and then I need to test them for integration testing..
I have a large, relatively complex query which I am in the midst of trying to optimize. I am using Toad as my SQL editor and executor. I am trying to test the execution time, but the first time the query executes is a good 5mins slower than future executions. I am wondering; does Toad "pre-load" the tables from previous querys when re-running a query?
I want to be able to run a query as if its the first time it is being run in order to truly gauge whether I am really optimizing the code or not.
I have the following four tables with the following structures Table A
ColA1 ColA2 ColA3 ColA4 ColA5 AA 100 CC DD EE
Table B
ColB1 ColB2 ColB3 ColB4 ColB5 AA 100 40452 A9 CDE
when these two tables were joined like the following:
Select colA1,ColA2, ColA3, ColA4, ColB3,ColB4, ColB5 from table A Left outer join (select ColB3, ColB4, ColB5 from table B where colB3 = (select max(colB3) from table B ) on (colA1 = colB1 and ColA2 = col B2)
