SQL & PL/SQL :: Define A Cursor Using Dynamic Query?
Aug 29, 2010
Is it possible to define a cursor using dynamic sql. Reason being is, I want to fetch data from 4 diffrent tables but dont want 4 diffrent cursors for this purpose.
I have a procedure that takes an in parameter . Cursor is declared in this procedure. Again is there a way to use dynamic sql so that this cursor declared in procedure uses all 4 table one at a time i.e cursor c1 is select * from table_name(I want this table name to be updated every time with new table name).
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Jul 17, 2013
I m trying to give table name as parameter to this function. It is compiling properly.But when an anonymous block is created to call this table value, it has to be fetched into a variable of Rowtype of this inputted table. So I am not able to create any ROWTYPE variable for this table dynamically.
//Function
create or replace function instant_tabula(tabula in varchar) return sys_refcursor
as
cur sys_refcursor;
str varchar2(20000);
begin
str := 'select * from ' || tabula;
open cur for str;
return cur;
end;
[code]....
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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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Oct 14, 2010
can we use user define value (how to use '&') in nested function of a query ?
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Apr 8, 2013
I'm using dynamic sql (DBMS_SQL) to define columns of ref cursor. It works Ok but the problem is when i'm using PL/SQL CURSOR in the REF CURSOR. Then,I'm getting :
Error at line 3
ORA-00932: inconsistent datatypes: expected NUMBER got CURSER
ORA-06512: at "SYS.DBMS_SQL", line 1830
ORA-06512: at "TW.PRINT_REF_CURSOR", line 28
ORA-06512: at line 9
Here is my code:
set serveroutput on
exec DBMS_OUTPUT.ENABLE(1000000);
declare
l_cursor sys_refcursor;
begin
[code]....
Is there a solution or bypass?
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Jan 24, 2013
how can i define the following condition in query definitions tab to define query condition for the value which is linked from previous tab/report ,:P2_SR_ BUSINESS_UNIT is the Item which are getting value from another report Value.
BUSINESS_UNIT=DECODE(:P2_SR_BUSINESS_UNIT,'BS&I','Business Sales And Information','WS','Whole Sale')
I am new in apex and havent had any chance to create a simple report.Version Application Express 4.1.1.00.23
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Jun 2, 2010
There are several stages for sql processing in 10g2 database concept document.The following stages are necessary for each type of statement processing:
■ Stage 1: Create a Cursor
■ Stage 2: Parse the Statement
■ Stage 5: Bind Any Variables
■ Stage 7: Run the Statement
■ Stage 9: Close the Cursor
Optionally, you can include another stage:
■ Stage 6: Parallelize the Statement
Queries (SELECTs) require several additional stages, as shown in Figure 241:
■ Stage 3: Describe Results of a Query
■ Stage 4: Define Output of a Query
■ Stage 8: Fetch Rows of a Query
Stage 3: Describe Results of a Query The describe stage is necessary only if the characteristics of a query's result are not known; for example, when a query is entered interactively by a user. In this case, the describe stage determines the characteristics (datatypes, lengths, and names) of a query's result.
Stage 4: Define Output of a Query In the define stage for queries, you specify the location, size, and datatype of variables defined to receive each fetched value. These variables are called define variables. Oracle performs datatype conversion if necessary.
I still don't understand what's Stage 3: Describe Results of a Query and Stage 4: Define Output of a Query.
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Sep 1, 2012
So, for lack of a better way to explain it, I need to do the following.
I need a EXECUTE IMMEDIATE to be able to use a CURSOR but its saying its not declared. Is their a way to pass the cursor so a Execute Immediate can use it...
V_SQL := 'REPLACE(V_DATA,'TEST',CUR_DATA.'||V_FIELD||');';
EXECUTE IMMEDIATE (V_SQL);
I know thats just a small part... but it shows the end goal. I need to append a VARCHAR that has the COLUMN NAME I need from the CURSOR. CUR_DATA is the open cursor. V_DATA is just a VARCHAR with text in it.
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Jul 20, 2011
I am creating a db function to select * from table_name to be used by the application for retrieving lookup data. I found many examples for how to return cursor as a result of executing a dynamic sql but don't know the optimum way.
following is my current trial:
CREATE OR REPLACE PACKAGE types AS
TYPE Cursortype IS REF CURSOR;
END;
/
CREATE OR REPLACE FUNCTION F_GEN_SELECT_CURS
(S_APP_USER IN VARCHAR2, I_MODULE_ID IN NUMBER, S_TABLE IN VARCHAR2)
/*This function maps S_ACC_MAJOR_ACCOUNT_LIST CoolGen service
[code].......
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Dec 13, 2011
I have used a dynamic cursor for fetching value from different tables hence table name assigned dynamically during run time but i face an error ORA-06562 type of argument must match type of column and bind variable with error ORA-06212 But i frequently check the table structure and Declared variable there is no mismatch between them.
Code----------
Declare
C_YEAR number(38);
C_LOC VARCHAR2(200);
C_INVNO VARCHAR2(200);
C_INVDT DATE;
C_CTRT VARCHAR2(200);
C_GLCD VARCHAR2(200);
[code]....
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Aug 21, 2012
I'm currently using Oracle 11.2G and I was wondering if you can declare a dynamic cursor as a strong ref cursor type or can it only be declared as weak type ref cursor? Now, if it can only be declared as a weak type ref cursor, is there any way to avoid having to explicitly declare the type and field names being returned by the cursor? Meaning, is there anyway to avoid have to do something like this...
TYPE example_rec IS RECORD
(
col1 VARCHAR2,
col2 NUMBER,
col3 NUMBER,
etc...
)
Instead, I was wondering if I could just set the fields and their types by setting them as a TABLE OF the ref cursor? The reason I'm wondering if this is possible is because I have a lot of fields being returned in my cursor, and I was hoping on avoiding having to type each one out and its type.
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May 24, 2005
I am using dynamic Pl/SQL with ProC and having problems with cursor. I've to execute stored procedure dynamically and get the result of select list into the cursor. The EXECUTE command is working fine but the FETCH gets failed with error "ORA-01002: fetch out of sequence". I've read that cursor variable can not be used with dynamic SQL.
Stored Procedure:
------------------
ROCEDURE open_mod_cur (
curs IN OUT cur_type,
module_id IN varchar2)
[Code].....
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Jan 3, 2011
After opening a dynamic cursor, usually fetch hit record into some variables. However, if I do not want to "FETCH INTO " operate Just only skip this record.
DECLARE
TYPE weak_cur_type IS REF CURSOR;
weak_cur_1 weak_cur_type;
weak_cur_2 weak_cur_type;
vs_dsql VARCHAR2(2048);
vd_create_time DATE;
vn_count NUMBER(8);
vn_total_amount NUMBER(13);
[Code]...
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Oct 11, 2013
I have a plsql block construct where i want to use for loop dynamically , the query which for cursor for for loop will accept the table name from parameter and join them to return the result. the resultant data will iterate in loop and do the execution.
DECLARE
--initialize variables here
v_date varchar2(10);
v_rebuild_index varchar2(250);
v_sql VARCHAR2(250);
p_table_name varchar2(250) := 'DS_ABSENCE';
p_source_table varchar2(30) := 'STG_ABSENCE';
p_source_owner varchar2(30) := 'STG_SAP';
v_for_sql varchar2(1000);
[code]....
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May 10, 2013
create or replace package cognos_pk as /* Creates Package Header*/
TYPE project_type IS record( /* A record declaration is used to */
c1 NUMBER /* provide a definition of a record */
); /* that can be used by other variables*/
TYPE project_type1 IS REF CURSOR return project_type; /* Variable declaration */
procedure conosg_sp (result1 out project_type1); /* SP declaration */
end;
[code]....
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Apr 16, 2010
I am having a table with 4 columns as mentioned below
For a particular prod the value greater less than 5 should be rounded to 5 and value greater than 5 should be rounded to 10. And the rounded quantity should be adjusted with in a product starting with order by of rank with in a prod else leave it
Table1
Col1prodvalue1rank
1A21
2A62
3A53
4B61
5B32
6B73
7C41
8C22
9C13
10C74
Output
Col1prodvalue1rank
1A51
2A52
3A33
4B101
5B02
6B63
7C51
8C52
9C03
10C44
I have taken all the records in to a cursor. Once after rounding the request of 1st rank and adjusting the values of next rank is done. Trying to round the value for 2nd rank as done for 1st rank. Its not taking the recently updated value(i,e adjusted value in rounding of 1st rank).
This is because of using a cursor having a value which is of old value. Is there any way to handle such scenario's where cursor records gets dynamically updated when a table record is updated.
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Dec 5, 2012
I have a dynamic query stored in a function that returns a customized SQL statement depending on the environment it is running in. I would like to create a Materialized View that uses this dynamic query.
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Nov 3, 2010
I have a Strange requirement from client data is loaded from excel to Oracle Table- TST_TBL (with Header in Excel)
CREATE TABLE TST_TBL
(
JOB_DETAIL_ID NUMBER,
SHEET_NAME VARCHAR2(100 BYTE),
COL1 VARCHAR2(400 BYTE),
COL2 VARCHAR2(400 BYTE),
COL3 VARCHAR2(400 BYTE),
COL4 VARCHAR2(400 BYTE),
[Code]...
After the Data is loaded, we see data look like the above.
(1) Always COL3 column name have data value as 'Gen1' which is the indication for us from where data starts. But Gen1, Gen2, Gen3 etc... is dynamic. ie. This month we get gen1 and gen2 columns followed by null value in a column. Next month we get gen1,2,3,4 followed by null column.
(2) Null Column indicate us that there is a break in the column.
(3) Then next we need to look for next group of data (Monthly) and then insert into the same table again with different sheet_name column.
(4) Next for Quater and then YTD. None of the column Values are fixed and its all dynamic.
If you load the below data, you will come to know what i am looking for. I tried using UNPIVOT. But couldnt able to achieve it. Is there an option to do it in sigle query? or Do I need to go for Stored Procedure?
Insert into TST_TBL
(JOB_DETAIL_ID, SHEET_NAME, COL1, COL2, COL3,
COL4)
Values
(100, 'Wire_1', 'Gen1',
'Gen2', 'Gen3', 'Gen4');
Insert into TST_TBL
[Code]....
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Aug 28, 2012
I'm trying to replace the variable value v_tblname in dynamic SQL. But not able to escape the single quotes character.
DECLARE
v_sqlcols VARCHAR2(2000);
v_sqlcols1 VARCHAR2(2000);
v_tblname VARCHAR2(50) := 'DEPT';
BEGIN
v_sqlcols := q'[SELECT LISTAGG(COL,',' ||CHR(10)) WITHIN GROUP (ORDER BY COL)
FROM (
[code]....
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Sep 16, 2010
l_query := 'SELECT sedol ' ||
'FROM integration.tmp_attributed_sedol ' ||
'WHERE ' || p_field || '=''' || p_ref_number || ''' ';
by using the execute immediate or any other command, how can i check whether the query returned any rows or not?
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Mar 25, 2011
writing dynamic sql query for swapping names:
the output shuld be like that
input output
a a
a b b a
a b c c b a
a b c d d c b a
i have writen it in static form by using instr,substr.But i m having difficulty in making it dynamic by using select statement.I have to make it for retrieving data from database.
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Sep 2, 2011
small piece of PL SQL code. how to make this query.Requirement is that a concurrent program is run with parameters and one of them i_num_org_id is non mandatory so it can come as NULL...Now in an existing code which i have to change, it uses a query as
SELECT xyz
FROM abc_table
WHERE <various conditions>
AND DECODE(i_num_org_id,NULL,1,table.organization_id) = NVL(i_num_org_id,1);
Now with the above way, if the program is run with some value for i_num_org_id or run as normal query (with NULL as the value) inside a PLSQL procedure/package then it runs fine.This query if you run in Toad etc then too it will work fine but if it is made a dynamic SQL and then used as either EXECUTE IMMEDIATE or opened as a cursor then we get a "Missing expression". I created this small anonymous block to test this and this will go into missing expression error
declare
l_num_org_id NUMBER := NULL;
l_temp VARCHAR2(100);
l_sql varchar2(1000);
begin
l_sql := 'SELECT '||''''||'abcd'||''''||'
[code].....
how i can reformat this query so that even if NULL value comes for i_num_org_id then it is handled.I am aware about CASE but that cannot be used in WHERE clause i guess.
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Nov 12, 2013
Orcl Ver: 11g R2. I am leveraging the Oracle's pipelined table function.It's working fine for static SQL.
create or replace package test13_pkg as type r_disc_req is record(disc_line_id number,
req_id number); type t_disc_req is table of r_disc_req; function F_GetDiscReq return t_disc_req pipelined; procedure P_ProcessDiscReq;end; CREATE OR REPLACE PACKAGE BODY test13_pkgAS FUNCTION F_GetDiscReq RETURN t_disc_req PIPELINED IS lo_disc_req r_disc_req; BEGIN FOR r_row IN (SELECT disc_line_id, req_id FROM edms_disc_lines_stg WHERE ROWNUM < 10) LOOP lo_disc_req.disc_line_id := r_row.disc_line_id; lo_disc_req.req_id := r_row.req_id; PIPE ROW (lo_disc_req);
[code]...
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Dec 22, 2010
I have a dynamic query that is ending up getting larger than 32k and this query is the base of a ref cursor that would in turn return the results to the application. How can I solve this problem since the largest content of a pl sql variable or literal is 32k ( said by oracle ) ?
PROCEDURE sp_large_query (c1 OUT sys_refcursor)
IS
BEGIN
OPEN c1 FOR ' SELECT STATEMENT WITH MORE THAN 32K ';
END;
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Aug 22, 2010
FUNCTION get_attributed_sedol( p_ref_number IN VARCHAR2,
p_field IN VARCHAR2 )
RETURN VARCHAR2
IS
l_query VARCHAR2(1000);
[code]...
It gives me an error on the line where the execute immediate statement is.
Quote:
ORA-00905
missing keyword
Cause: A required keyword is missing.
Action: Correct the syntax.
But when I check my stack trace table to see what the actual query string looks like, I see this
Quote:
SELECT sedol INTO l_attributed_sedol_code FROM integration.tmp_attributed_sedol WHERE CLIENT_LEDGER_REF='LEAE057090' AND ROWNUM=1
There's nothing wrong with that, is there? It executes fine if I try it manually.
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Nov 23, 2011
I have a dynamic query which has this clause in it: WHERE [COLUMN NAME] IN (' || theString || ')
My problem is that theString is being passed in through a C# call and the variable is a bunch of strings concatenated together and separated by a comma. Ex: theString = "'val1','val2'"
How many quotes are supposed to go around val1 and val2?
I've tried the following and none work:
'val1','val2'
''val1','val2''
''val1'',''val2''
'''val1'',''val2'''
''''val1'',''val2''''
When I run the procedure in Oracle it works with '''val1'',''val2'''
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Feb 8, 2013
I have written an SQL which will dynamically generate the Select statement with from and where clause in it. But that select statement when executed will get me hundreds of rows and i want to insert each row separately into one more table.
For that i have used a ref cursor to open and insert the table.
In the select list the column names will also be as follows: COLUMN1, COLUMN2, COLUMN3,....COLUMNn
find below the sample
TYPE ref_csr IS REF CURSOR;
insert_csr ref_csr;
v_select VARCHAR2 (4000) := NULL;
[Code].....
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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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Feb 20, 2012
I don't know what column name would there for my new view. so can i use dynamic SQL in View so that I can get correct column name?
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Nov 8, 2011
I'm trying to build a dynamic sql inside an Oracle procedure, and return it as a SYS_REFCURSOR to ADO.NET using ODP.NET in Oracle 11R2. Below is my table:
CREATE TABLE "TFWDB_ENTIDADE"
(
"CD_ENTIDADE" NUMBER(10,0) NOT NULL,
"DC_ENTIDADE" VARCHAR2(100 BYTE) NOT NULL,
"NM_ENTIDADE" VARCHAR2(255 BYTE) NOT NULL,
"CD_TIPO" NUMBER(5,0) NOT NULL,
"ID_STATUS" CHAR(1 BYTE) DEFAULT ('1') NOT NULL,
CONSTRAINT "PKFWDB_ENTIDADE" PRIMARY KEY ("CD_ENTIDADE"),
CONSTRAINT "CHFWDB_ENTIDADE" CHECK (ID_STATUS IN ('0', '1'))
);
Below is the procedure I build to SELECT it:
create or replace procedure spfwdb_sl_entidade_1(
p_cd_entidade in number,
p_dc_entidade in varchar2,
p_nm_entidade in varchar2,
p_cd_tipo in number,
p_id_status in char,
[code]........
I'm calling this code from C#, and I get an empty Result Set. What am I doing wrong? Can I output the dynamic sys_refcursor that I created? Below is my C# code using ODP.NET:
string pConnectionString = "Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=ORASERVER)(PORT=1521))
(CONNECT_DATA=(SERVICE_NAME=ORASID)));User Id=user;Password=password;";
OracleConnection oConn = new OracleConnection(pConnectionString);
oConn.Open();
string pNomeProc = "spfwdb_sl_entidade_1";
[code]........
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