SQL & PL/SQL :: Substitute Column Name From Variable For Select Query
Jan 27, 2012
In a select query, I want to substitute the column name from a variable (In turn from an array of column names). Details are given below. I am getting an error as mentioned below. sort it out?
Create table Test1(ID Number(10),
Name varchar2(100),
Description varchar2(1000),
Site varchar2(100));
[Code]...
I am getting the error:
ORA-00904: "MTEST1"."NAME": invalid identifier
ORA-06512: at line 9
My objective is to get the name 'Thomas' in the variable - MValue1. I don't want to use the statement MValue1:=MTest1.Name because, moving forward, I want to have the column name to be dynamic, taken from an array of column names.
I need to achieve it by giving only one select query to get entire record and fetch the column values one by one, by substituting the column name from an array of column names, instead of writing that many lines of code / querying that may times to the database.
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Jan 24, 2012
In a select query, I want to substitute the column name from a variable (In turn from an array of column names). Details are given below. I am getting an error as mentioned below.
Create table Test1(IDNumber(10),
Namevarchar2(100),
Descriptionvarchar2(1000),
Sitevarchar2(100));
Insert Into Test1 values(10,'Thomas','Manager','LA');
Insert Into Test1 values(11,'George','Chairman','LA');
declare
MTest1Test1%RowType;
str1VarChar2(1000):='Name';
MValue1Varchar2(100);
begin
Select * Into MTest1 from Test1 where ID=10;
str1:='Select MTest1.'||str1||' from dual';
execute immediate str1 into mvalue1;
dbms_output.put_line('mvalue1 '||mvalue1);
end;
/
I am getting the error:
ORA-00904: "MTEST1"."NAME": invalid identifier
ORA-06512: at line 9
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Jan 23, 2010
when I've tried to use substitute variables, they like to come up in 2's for the prompt. When I have the Set Verify option on, its even more disgusting.
insert into orders
values(&order#, &customer#, &orderdate, &shipdate,
&shipstreet, &shipcity, &shipstate, &shipzip);
Enter value for order: Enter value for customer:
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Apr 2, 2012
I need generate a script like this.
spool loadvalues.sql
INSERT INTO SALES(column1, column2, column2) SELECT( COLUMN1, COLUMN2, COLUMN3) FROM TABLE_NAME;
spool off;
I would like to substitute TABLE_NAME with each value from the following query;
select table_name from user_tables
where table_name like 'SALES%'
so there are about 45 SALES tables ex: SALES_IDAHO,SALES_MICHIGAN etc.so my spool file(loadvalues.sql) should look like this ex:
INSERT INTO SALES(column1, column2, column2) SELECT( COLUMN1, COLUMN2, COLUMN3) FROM SALES_IDAHO;
sales_michingan should have script like
INSERT INTO SALES(column1, column2, column2) SELECT( COLUMN1, COLUMN2, COLUMN3) FROM SALES_MICHIGAN;
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May 1, 2011
I have a problem executing a function.
There are two tables,
1. Table with column names of a second table mapped to certain variables.
ex: Table1
col1, var1
col2, var2
col3, var3
--------
--------
2. Table with the values for columns as given in table 1 ex:
col1, col2, col3, col4, col5,
a , aa , 1 , x1 , p
b , ab , 2 , x2 , q
c , ac , 3 , x3 , r
I have to select values from table2.col1 do some processing and calculate values and store it in a table then do the same thing with col2 and so. This needs to be done for all the columns that appear in table1.For example in table 1 i have only three columns mentioned thus i have to process col1, col2 and col3 from table2. col4 and col5 will not be processed since they do not appear in the first table.
The problem is i have hundred columns in table 2 and the user can add up to hundred columns in table 1 as and when it is required.
I have created a cursor to first select column name from table 1 where variable is not null.For each value in cursor i put it in a local variable.
Second step is to select values from table2 where instead of column name i am using the local variable.But the problem is instead of choosing values from col1 the query returns the value as col1 (the value of local variable)
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Sep 3, 2013
I have table desc xx_testName
Null Type
-------- -------- --------------
COL1 NOT NULL NVARCHAR2(100) COL2 NOT NULL NVARCHAR2(100) COL3 NOT NULL NVARCHAR2(100)
i am able to query select * from xx_test however if i query as select col1 from xx_test then it is giving error.
ORA-00904: "COL1": invalid identifier00904. 00000 - "%s: invalid identifier"*
Cause: *Action:Error at Line: 3,131 Column: 13
Let me know how to query NVARCHAR2 column and how can we put in WHERE condition ?
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Jul 3, 2011
is it possible to use the records returned by a query as column names in a select query.
select (select column_name from dba_tab_cols where table_name='V_$DATABASE' and column_name like '%CONTROL%')
from v$database;
*
ERROR at line 1:
ORA-01427: single-row subquery returns more than one row
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Jul 5, 2011
I'm trying to write a simple query so I can do some testing on my application. I am trying to do something like this:
SELECT
Location,
LEVEL,
FROM
S_ORG_EXT
where
Location = 'North America' and LEVEL ='Software'
OR location = 'North America'
and Active = 'N'
in the where statement, I have put in the 'Active' that isn't a column. I want to be able to be able to change that in the select part. But I am not able to do so.
this is what I have tried:
SELECT
Location,
LEVEL,
Active = 'N' --I want to change this in the to N or Y so I can get different results.
FROM
S_ORG_EXT
where
Location = 'North America' and LEVEL ='Software'
OR location = 'North America'
and Active = 'N'
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Apr 5, 2011
here is what i am trying to do: im as using oracle 8 with sqltool
i have a Very large query. and i notice that many things are repeating. so i want to add them to a variable, instead of re-typing them. for example:
select SomeID from SomeTable;
i want SomeID to be put into a variable. but i still want to be able to get a normal select query at the end so that i can see the returned value:
i tried things like:
declare x number;
begin
set x=45454
select x from SomeTable;
end;
but could not get it to work.
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Jun 13, 2012
What is the best alternative to using VARCHAR2 if the output gets truncated after 4000 bytes in a PL/SQL function?
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May 9, 2013
I wrote the following
DECLARE
VISCONNECTED BOOLEAN;
VCONEXAO EXEC_SQL.CONNTYPE;
VARQUIVO_SAIDA TEXT_IO.FILE_TYPE;
VCURSOR EXEC_SQL.CURSTYPE;
VCOLUMNVALUE VARCHAR2(2000);
VSTATUS PLS_INTEGER;
[code].....
But, on line "VSTATUS := EXEC_SQL.EXECUTE(VCURSOR);" i get the error (ORA-01007 - VARIABLE NOT IN SELECT LIST). Whats is wrong?
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Jan 30, 2013
I'm new to XML to Oracle data integration. I do have clob column that has the XML data and trying to bring it into the Oracle relational tables, as a part of it we are developing PL/SQL procedure that calls this CLOB column, I want to know if we can variablize the data types ( Just like tablename. column name%type) in the select of the XML data:
select v.instrid, v.endtoendid, v.txid, v.cd, v.ccy,
replace(v.intrbksttlmamt,'.',',') as intrbksttlmamt, v.chrgbr, v.bic1, v.nm1, v.adrline11, v.adrline12, v.ctry1, v.iban1,
v.bic2, v.bic3, v.nm2, v.adrline21, v.adrline22, v.ctry2, v.iban2, v.cdtrref, v.addtlrmtinf
from the_data w,
xmltable(xmlnamespaces(default 'urn:iso:std:iso:20022:tech:xsd:pacs.008.001.01'),
[code]....
I do define the data types after every column name , the problem is incase there is change in datatype I do need to manually edit the procedure to change the datatype is there a way I can variablize them something like tablename.columname%type.
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Apr 12, 2011
I'm trying to return the number of records in my link table that contains the excursion_id I pass in by counting them. It doesn't seem to like the select count(*) into my output variable.
create or replace
PROCEDURE BOOK_PASSENGER(
EXCURSION_ID IN excursion_booking.excursion_id%TYPE,
PASSENGER_ID IN excursion_booking.passenger_id%TYPE,
NUMBER_BOOKED OUT NUMBER)
AS
BEGIN
INSERT INTO EXCURSION_BOOKING VALUES(EXCURSION_ID, PASSENGER_ID, NULL);
SELECT COUNT(*) INTO NUMBER_BOOKED FROM EXCURSION_BOOKING WHERE EXCURSION_ID = EXCURSION_ID;
END BOOK_PASSENGER;
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Mar 3, 2011
I have a table with around 80 columns. All i need is to select first 40 columns.
Is there any way to select first 40 columns without giving all the 40 Column Names in select clause.
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Jul 4, 2010
i want to select dynamic column names in my select statement in my function.
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Mar 30, 2011
the moment my 11g database is connecting to a php web front end. this following procedure is the one I'm having trouble with.
CREATE OR REPLACE PROCEDURE "BSISSONS"."CREATE_EXCURSION" (
min_places IN excursion.min_places%TYPE,
max_places IN excursion.max_places%TYPE,
additional_charge IN excursion.additional_charge%TYPE,
[code]...
I can select into an output variable to return the value of the primary key of the newly inserted row back into the webpage, but i need to be able to 'select into' a temp variable to insert this value into another table on the same procedure. I get complie errors when i try to 'DECLARE' a variable after the 'AS' keyword
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Jul 25, 2010
I have a problem that i have hard coded the username.tablename in each select statement of all forms of my application. Now i want to use a dynamic variable in place of username in each select statement throughout the application. The example is:
select * from scott.emp
and i want to write it as:
select * from variable.emp
But at compilation of the form the compiler should know the above variable name.
I have tried to use following select statement but it does not work.
select user into :global.username from user_users
I think perhaps my problem would be solved with Dynamic SQL Statement but i have no experience by using this statement.
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Apr 22, 2010
All I want to do is run a procedure (DO_H_RUN) that returns a number into "v1" and then use that variable to return the result sets in three selects. This is all in TOAD. If I do not have a where clause, the code executes fine (allowing me to see the data in multiple Grid tabs)! But, I want to filter the rows.
I've tried doing a number of different things (finding all sorts of stuff on the Web) like declaring cursor variables and the like but after spinning on this for a couple of hours, I'm stuck.
Here's my attempt (the names have been changed to protect the innocent!):
declare
v1 Numeric;
BEGIN
DO_H_RUN('Me', v1);
--DBMS_OUTPUT.PUT_LINE(v1); --This line works okay!
select * from h_run where h_run_id=v1; --NO GO
[code]....
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Jul 22, 2013
I am fetching a value in a variable as:
<select application_short_name into l_appl_nm from fnd_application where application _id=:p_appl_id>
Now I need to use the value fetched in variable "l_appl_nm" as a table partition name in next query.
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Jan 15, 2012
I studied a document about lexical parameter in that it says "Lexical parameters are used to substitute multiple values at run time and are identified by a preceding '&'. Lexical s can consist of as little a one line where clause to an entire select statement"
Select * from emp, deptno &where.
and i know about substitution variables using & is this are same (lexical and substitution) or different.
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Aug 7, 2009
I am looking to simplify the below query,
DELETE FROM A WHERE A1 IN (SELECT ID FROM B WHERE BID=0) OR A2 IN (SELECT ID FROM B WHERE BID=0)
Since both the inner queries are same,I want to extract out to a local variable and then use it.
Say,
Array var = SELECT ID FROM B WHERE BID=0;
And then ,
DELETE FROM A WHERE A1 IN (var) OR A2 IN (var)
How to do this using SQLPLUS?
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Jul 31, 2013
I have a INSERT query which is happening with a SELECT query.
===================================================
INSERT INTO tbl_fact_effort_lvl_data ( ............... )
SELECT ria.report_id,report_status: :,
((SELECT lov_num_val
FROM tbl_reference_data
WHERE lov_type = 'FREQUENCY' ) * (SELECT SUM(pph_task)
FROM tbl_ri_process
WHERE report_id = ria.report_id )) TOT_YEARLY_PROD_HOURS ,TOT_YEARLY_PROD_HOURS * tf.fac_value TOT_FACT_DATA,location_id
FROM tbl_fact tf LEFT JOIN ......... ;
====================================================
So, here I want to use column alias TOT_YEARLY_PROD_HOURS as another column to derive another column value TOT_FACT_DATA.
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May 14, 2013
I have to use bind variable for dynamic sql in a procedure. Is there a way to have control on these values. Say for example:
Procedur MyProc
(
In_EmpID Number default null,
In_EmpName Varchar2 default null,
in_JoinDate Date default null
[code]....
I have more than 5 In parameters, all 5 is not compulsory by default they are null and sql formation is also dynamic with in the procedure.I need to map bind variable to a proper one.. Is there a way to handle bind variable.
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May 17, 2010
How can i convert data in NCLOB column to BLOB variable? NCLOB now is tored in UTF16. The data character set is ISO8859P2. Need to keep BLOB at unicode.
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Nov 12, 2012
need to dynamically assign value of each column of a row type variable:The example is like that:
Table "Student_list" is as follows:
---------
COL1 VARCHAR2(50),
COL2 VARCHAR2(50),
COL3 VARCHAR2(50)
[code]....
Is there any work around where i can dynamically built my variable or table.column name and assign a value to it?
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Mar 10, 2012
Is there a technique to getting a Top-N query to work as a sub-select in a larger query -or- is there another way to generate Top-N like results that works as a sub-select?
Background:
We have a large query that is being used to build an export from a legacy HR system to a new one. Amount the data needed in the export is the employees primary phone number.
The legacy HR system allows multiple phone numbers to be stored in a simple table structure:
SELECT emp_id, phone_type, phone_number
FROM employee_phones
emp_idphone_typephone_number
------- --------------- -------------------
46021CELL2222222222
46021HOME1111111111
46021WORK3333333333
The new HR system does allow for multiple phone numbers, however they need a primary phone number identified and stored with the employee master information. (Subsequent phone numbers get stored in alternate table.)
From a business perspective, we have decided that if they have a HOME phone in the legacy system that should be the primary in the new system, if no HOME phone, then WORK, if no WORK then CELL.
That can be represented as:
SELECT *
FROM employee_people_phones
WHERE emp_id = '46021'
ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')
emp_idphone_typephone_number
------- --------------- -------------------
46021HOME1111111111
46021WORK2222222222
46021CELL3333333333
Or similarly with Top N concept:
SELECT *
FROM (SELECT *
FROM employee_people_phones
WHERE emp_id = '46021'
ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')) results
WHERE ROWNUM = 1
emp_idphone_typephone_number
------- --------------- -------------------
46021HOME1111111111
Or really what I want in my export:
SELECT phone_number
FROM (SELECT phone_number
FROM employee_people_phones
WHERE emp_id = '46021'
ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')) results
WHERE ROWNUM = 1
phone_number
-------------------
1111111111
However, when the Top-N query is added as a sub-select in a larger query using the employee id from the larger query (WHERE emp_id = export.emp_id), it fails saying that �export.emp_id� is not a valid id.
(SELECT phone_number
FROM (SELECT phone_number
FROM employee_people_phones
WHERE emp_id = export.emp_id
ORDER BY decode(phone_type, 'HOME', 'a', 'WORK', 'b', 'CELL', 'c', 'z')) results
WHERE ROWNUM = 1)
1.Any way around this? Is it possible to put a Top-N (with a WHERE clause using data from the main query) in a sub-select?
2.Any alternatives (other than Top-N) to delivering a ROWNUM=1 result with a �custom� ORDER BY statement?
Other Notes: Yes, we know we could do two queries in the data conversion first deliver the bulk data to the target table, and then update with the phone numbers. However, for multiple reasons, that is less than desirable.
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Aug 28, 2012
I am unable to insert the result set of query into corresponding SQL Table type variable where as same functionality can be accomplished by PL/SQL table type variable. Can't we access the same by using SQL type variable?
Ex:
Step 1:
SQL Object type , Table type Objects creation :
drop type sql_emp_tab_type ;
drop type sql_emp_type ;
create or replace type sql_emp_type as object
(
empno number,
ename varchar2(20),
[code]...
Step 2: Accessing the table type object from PL/SQL block
SQL>
SQL> declare
2
3 tab_type_var sql_emp_tab_type := sql_emp_tab_type();
4
5 begin
6
7 tab_type_var.extend(10);
[code]...
Step 3: Instead of SQL Table type , if we define the corresponding PL/SQL table type variable
SQL> declare
2
3 --tab_type_var sql_emp_tab_type := sql_emp_tab_type();
4
5 type pl_sql_emp_type is record
6 (
7 empno number,
[code]...
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Jul 27, 2012
I have a query which is using literals
strquery:='SELECT SUMTOTAL FROM tab1 WHERE BATCHNO = '''
|| gBNo
|| ''' AND A_ID = '''
|| g_id
|| ''' AND L_ID = '''
|| g_LId
|| ''' AND S_Code = ''C_3'' ';
execute immediate strquery; I have been asked to use a bind variable to avoid hard parsing.How do i do it?
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Nov 11, 2012
Just explaining what I am trying to achieve:
1) i have a hr.departments table that was loaded in hr schema on 1st oct 2012 with 4 columns(department_id, department_name, manager_id, location_id)
2) now I have a new schema by my name 'rahul' and I have loaded departments table but now an additional column has come into picture,ie created_date, this table got loaded on 1st-Nov-2012
3) Now going forward my columns could be dropped from the departments table (it can be a case), for example might be my departments table in my schema 'rahul' one day could comprise of only 3 columns(department_id,department_name,manager_id)
4) Now in the next step, I have managed to extract common column names(in a single line where columns are delimited using a comma) from both the tables(hr.departments and rahul.departments) which are (department_id, department_name, manager_id, location_id) using all_tab_cols table and I have written a function for it which i will be pasting below.
5) now going forward, using the above column names line with column names delimited using comma, I have used a ref cursor and assigned a query to it using the line of columns that I have extracted from the above point
6) Now I want to create a record variable which refers to my ref cursor, something like we do when we create a record variable by reffering to an explicit cursor defination that we give in the declaration block.
PS:
1) I have been out of touch with plsql for a long time so I have lost a lot of mmeory regarding plsql.
2) basically I need to compare data in hr.departments table with rahul.departments table for only columns that are common to both the tables, rest new or discarded columns information will go in one of the log tables that I have created(this is done already)
Code :
===================================================================================================
create or replace procedure p_compare_data(fp_old_table_name in varchar2, fp_new_table_name in varchar2)
is
[Code].....
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Jul 22, 2009
I'm trying to do a pivot query in oracle to get the years from a column and make a separate column for each. I found an example of the code to use on the internet and i changed it for my own tables but i'm getting errors. Namely a "FROM keyword not where expected" error at the beginning of the 'avg(...' statements.
I have copied the code used in
select stud_id, 2006, 2007, 2008, 2009
from (
select stud_id,
avg(case when year=2006 then ((present/poss)*100) else null end) 2006,
avg(case when year=2007 then ((present/poss)*100) else null end) 2007,
avg(case when year=2008 then ((present/poss)*100) else null end) 2008,
avg(case when year=2009 then ((present/poss)*100) else null end) 2009
from attendance.vw_all_attendance_perc
group by stud_id
);
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