Pass rowtype as function parameter, as a Object like type. How?
Hi.
I have the following question.
I have 3 tables:
TAB1
TAB2
TAB3
I declare 3 rowtypes variables, one for each table:
v_tab1 TAB1%ROWTYPE;
v_tab2 TAB2%ROWTYPE;
v_tab3 TAB3%ROWTYPE;
I want to pass a rowtype as a function parameter, but i want the function to allow any rowtype to be passed as parameter, and then inside the function convert that "object" to the correct rowtype.
Is that possible?
In another language like C# for example, i would pass the rowtype as a object type, and then cast it to the correct data type.
I hope you can help me.
Cheers.
To do this they would have to be object types, and have a common supertype.Alternatively unrelated object types could be abstracted away with ANYDATA.
There is no such functionality exposed / documented for records - although the signatures of several built-in packages suggest that a mechanism for passing ADTs as formal parameters does actually exist.
Similar Messages
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Can I pass a table function parameter like this?
This works. Notice I am passing the required table function parameter using the declared variable.
DECLARE @Date DATE = '2014-02-21'
SELECT
h.*, i.SomeColumn
FROM SomeTable h
LEFT OUTER JOIN SomeTableFunction(@Date) I ON i.ID = h.ID
WHERE h.SomeDate = @Date
But I guess you can't do this?... because I'm getting an error saying h.SomeDate cannot be bound. Notice in this one, I am attempting to pass in the table function parameter from the SomeTable it is joined to by ID.
DECLARE @Date DATE = '2014-02-21'
SELECT
h.*, i.SomeColumn
FROM SomeTable h
LEFT OUTER JOIN SomeTableFunction(h.SomeDate) I ON i.ID = h.ID
WHERE h.SomeDate = @DateHi
NO you cant pass a table function parameter like this?
As When you declare @date assign value to it and pass as a parameter it will return table which you can use for join as you did it in first code
But when you pass date from some other table for generating table from your funtion it doesnt have date as it is not available there
Ref :
http://www.codeproject.com/Articles/167399/Using-Table-Valued-Functions-in-SQL-Server
http://technet.microsoft.com/en-us/library/aa214485(v=sql.80).aspx
http://msdn.microsoft.com/en-us/library/ms186755.aspx
https://www.simple-talk.com/sql/t-sql-programming/sql-server-functions-the-basics/
http://www.sqlteam.com/article/intro-to-user-defined-functions-updated
Mark
as answer if you find it useful
Shridhar J Joshi Thanks a lot -
Passing enums to functions without knowing the specific enum type
My application needs the function invocation feature by using reflection mechanism. The function parameters are restricted to string, int, float and enums. I am facing problems with enums.
Is there a way to invoke the function by passing specific enum type as parameter to the function.
For eg:
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Specific function modules to create objects of type SC, D, CG CE?
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I need to create objects
SC (Program of study)
D (Event Type)
CG (Module Group)
CE (Assessment)
using function modules. Up to the present, we have beeing using function module
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as an all purpose FM for all these object types.
However, now, I have the requirement to replace these FM with specific FM for that particular object type. For object type SM, I found
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Now, I am asking you if there are such FM for the other objects in question as well??
THANKS,
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Hereby some FM's that may help you out:
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How to pass "EnterpriseManagementObject" Type as Function parameter?
Hello, dear Colleagues.
I'm trying to pass "EnterpriseManagementObject" as Function parameter.
Here is the piece of code:
$SCSM = 'SERVER_NAME'
function Add-Comment {
param (
[parameter(Mandatory=$true,Position=0)][Alias('Id')][String]$pSRId,
[parameter(Mandatory=$true,Position=1)][Alias('Comment')][String]$pComment,
[parameter(Mandatory=$true,Position=2)][Alias('EnteredBy')][String]$pEnteredBy,
[parameter(Mandatory=$true,Position=3)][Alias('IsAnalyst')][Bool]$AnalystComment,
[parameter(Mandatory=$true,Position=4)][Alias('IRObject')][EnterpriseManagementObject]$IRObject
if ($IRObject) {
$NewGUID = ([guid]::NewGuid()).ToString()
if ($AnalystComment)
$Projection = @{__CLASS = "System.WorkItem.Incident";
__SEED = $IRObject;
AnalystComments = @{__CLASS = "System.WorkItem.TroubleTicket.AnalystCommentLog";
__OBJECT = @{"Id" = $NewGUID;
Comment = $pComment;
DisplayName = $NewGUID;
EnteredBy = $pEnteredBy;
EnteredDate = (Get-Date).ToUniversalTime();
IsPrivate = $false
New-SCSMObjectProjection -Type System.WorkItem.IncidentPortalProjection -Projection $Projection -ComputerName $SCSM -ErrorAction stop
} else {
Write-Host $pSRId "could not be found"
$IncidentClass = Get-SCSMClass -name System.WorkItem.Incident$ -ComputerName $SCSM
$Incident = Get-SCSMObject -Class $IncidentClass -Filter "name -eq $c" -ComputerName $SCSM
Add-Comment -Id $c -Comment $text -EnteredBy $name -IsAnalyst $False -IRObject $Incident -ErrorAction stop
With GetType() I watched $Incident is "EnterpriseManagementObject":
IsPublic IsSerial Name BaseType
True True EnterpriseManagementObject Microsoft.EnterpriseManagement.Common.EnterpriseManagementObjectBaseWithProperties
But PS script returns error TypeNotFound:
Add-Comment : Unable to find type [EnterpriseManagementObject]. Make sure that the assembly that contains this type is loaded.
At C:\script.ps1:146 char:13
+ Add-Comment -Id $c -Comment $text -EnteredBy $name -IsAnalyst $True ...
+ ~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (EnterpriseManagementObject:TypeName) [], RuntimeException
+ FullyQualifiedErrorId : TypeNotFound
Is there a way to pass "EnterpriseManagementObject" as Function parameter?
Thanks.First of all the error indicates that you haven't loaded the assembly which contains the class you're trying to load.
Try loading the assembly by running:
[Reflection.Assembly]::LoadWithPartialName("Microsoft.EnterpriseManagement.Core") | Out-Null
Secondly if you want to use type based parameters restrictions you should use full type name, which can be found with the command:
$SomeObject.GetType().FullName
You should end up with: Microsoft.EnterpriseManagement.Common.EnterpriseManagementObject -
How to pass rowtype argument to a function from select statement?
Hi all!
I have function that takes mytable%rowtype as in parameter. can I pass entire row of mytable to the function from select statement? kind of
select myfunction(mytable.*) from mytable where ....
Thanks in advanceThe function can be used in a SQL statement only if it accepts SQL types and returns SQL type. %ROWTYPE being PL/SQL construct and not a SQL datatype, can not be used in this context.
http://download-west.oracle.com/docs/cd/B14117_01/server.101/b10743/datatype.htm#i2093 -
How to pass multi value selection parameter to SAP Function Module?
Hi ,
Anyone know how to pass CR multi value parameter - array to SAP Function module ?
eg multi selection of customer in CR
and then pass to Function module
in SAP FM, the SQL select these customer only
How should the import parameter / table of SAP Function module designed?
and how should CR pass the data to SAP FM
thx
JohnMoved to Integration Kit forum
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Pass TestStand error type directly into function parameter
Hi,
I am using TestStand 4 and Labwindows CVI 8.5.
I wonder if it is possible to pass Standard Step error type into CVI function parameters.
I think it would be more simple to pass one parameter instead of passing Error code, Error occurred state and Error message into function prototype.
I tried to use tsErrorDataType struct defined into tsutil.h into my function prototype.
In TestStand, I pass Step error type into function parameter but it does not work.
TestStand displays an error meaning parameters does not match function prototype.
Thank you for your help.Hi Tartempion,
In order to pass the TestStand Error Container as one parameter to a function in a CVI DLL, you must use a struct that is typedef'ed and create an .fp file that is included as a type library for the DLL. When you create a .fp file to add to a DLL, the DLL will not build unless all structs/enums are typedef'ed. Thus, I wouldn't advise using the tsutil.h because you would have to go through and typedef every single struct and enum in the header file.
Instead, you can simply create a typedef'ed struct in your projects header file and create an .fp file with the struct specified as a data type. Then in TestStand, when you call the function you would need to ensure that the parameter is of Category "C Struct", and type "Error". The attached zip file contains a CVI 8.5 project that demonstrates this along with a TestStand 4.0 sequence file that demonstrates how to pass the parameter to the function by reference. In case you run into trouble creating the .fp file please refer to the following KnowledgeBase. The instructions are for enums but easily correspond to structs as well:
TestStand and LabWindows/CVI Enumeration Data Types
Hope this helps!
Manooch H.
National Instruments
Attachments:
PassTSError.zip 19 KB -
Read function block parameter with its object dictionary index in VC?
How do I read a function block parameter with its object dictionary index using NI-Fbus Communications Manager Programmer VC API?
You can use marco NIFB_INDEX(index) as parameter for nif_ReadObject function. The index is the relative index of the parameter in the block.
nifError_t nifReadObject(nifDesc_t ud, NIFB_INDEX(uint32 idx), void *buffer, uint8 *length)
Please also refer to 'NI-FBUS Hardware and Software User Manual' from Start->National Instruments->NI-FBUS->Manuals. Page 6-41 ~ Page 6-44 describe the detail information about nifReadObject() function.
Page 6-51 ~ Page 6-52 explain the usage of marcos for processing index.
Feilian (Vince) Shen -
Is it possible to pass table name as parameter to function calls?
Let's say I would like to retrieve data from table BSAD, BSID, BSIS, BSAS with the exact same WHERE conditions.
I.E.
SELECT SINGLE * FROM bsis
WHERE bukrs = zbukrs
AND belnr = zbelnr
AND gjahr = zgjahr
AND buzei = bseg-buzei.
SELECT SINGLE * FROM bsas
WHERE bukrs = zbukrs
AND belnr = zbelnr
AND gjahr = zgjahr
AND buzei = bseg-buzei.
Is there a way that I could put them into a function and do something like?
perform select_table_bsas using 'bsas'.
perform select_table_bsis using 'bsis'.
and I should get SELECT * FROM passed from the function calls.
Thanks.Hello,
You can try something like this
DATA : LV_DBTAB1 LIKE DD02L-TABNAME.
DATA : DREF TYPE REF TO DATA.
FIELD-SYMBOLS: <ITAB> TYPE ANY TABLE. " used to store dynamic tables
LV_DBTAB1 = 'MARA'. " in caps
CREATE DATA DREF TYPE STANDARD TABLE OF (LV_DBTAB1)
WITH NON-UNIQUE DEFAULT KEY.
ASSIGN DREF->* TO <ITAB> .
* chooses only english values
SELECT * FROM (LV_DBTAB1) INTO TABLE <ITAB> WHERE SPRAS = 'E'.
here, even the internal table is dynamic, but that can be static if you know the structure for sure -
How to pass more than one parameter using common...
Hi,
I am using ODP.NET with my 2005 VB
I want to create function from where I can pass more than one parameter to execute SP, or query just like i created for SQL SERVER as below
Public shared Function CreateParameter(ByVal paramname As String, ByVal paramvalue As Object) As DbParameter
Dim param As DbParameter
param = New SqlParameter
param.ParameterName = paramname
param.Value = paramvalue
Return param
End Function
Public Shared Function ExecuteQuery(ByVal sql As String, ByVal commtype As CommandType, ByVal ParamArray parameter As DbParameter())
Dim cmd As DbCommand = New SqlCommand()
cmd.Connection = OpenConnection()
cmd.CommandType = commtype
cmd.CommandText = sql
cmd.Parameters.AddRange(parameter)
Dim RetVal As Integer = cmd.ExecuteNonQuery()
Return RetVal
End Function
specially part is in bold to be converted
I tried like but oracleCommand.parameters doesnt support AddRange
please help me out
RegardsHello,
I used the following way:
pCommand.CommandText = "Update " + sDataTable + " set "
+ sColumnName + " = :1 ";
pCommand.Parameters.Add("ValueToDb",
this.DefaultDbType,
this.m_Value,
System.Data.ParameterDirection.Input);
Of course, you can add :2,... to your command text, too.
The way back is:
sEndOfTheClause += " RETURNING " + sDataTable + "." + sColName + " INTO :iNewValue";
pCommand.CommandText = ... + sEndOfTheClause;
pCommand.Parameters.Add("iNewValue", this.DefaultDbType,
ParameterDirection.Output);
bool bReturn = (pCommand.ExecuteNonQuery() != 0);
if ((bReturn == true) && (pCommand.Parameters.Count > 0))
this.Value = DataService.Convert<DATA_TYPE>(pCommand.Parameters[0].Value);
.... -
Java function parameter problem?
look at this code:
public class Test {
static void doSet1(Date birth) {birth.setTime(1);}
static void doSet2(Date birth) {birth = null;}
public static void main(String[] args) {
Date birth = new Date(0);
doSet1(birth);
System.out.println(birth.getTime());
it should ouptut 1. that's right.
however when the main function changed to
public static void main(String[] args) {
Date birth = new Date(0);
doSet2(birth);
System.out.println(birth.getTime());
I thought it should throw a NullPointerException.
but it output 0.
why? any lights appreciated!Everything in Java is passed "by value". Everything.
Pass-by-value
- When an argument is passed to a function, the invoked function gets a copy of the original value.
- The local variable inside the method declaration is not connected to the caller's argument; any changes made to the values of the local variables inside the body of the method will have no effect on the values of the arguments in the method call.
- If the copied value in the local variable happens to be a reference (or "pointer") to an object, the variable can be used to modify the object to which the reference points.
Some people will say incorrectly that objects are passed "by reference." In programming language design, the term pass by reference properly means that when an argument is passed to a function, the invoked function gets a reference to the original value, not a copy of its value. If the function modifies its parameter, the value in the calling code will be changed because the argument and parameter use the same slot in memory.... The Java programming language does not pass objects by reference; it passes object references by value. Because two copies of the same reference refer to the same actual object, changes made through one reference variable are visible through the other. There is exactly one parameter passing mode -- pass by value -- and that helps keep things simple.
-- James Gosling, et al., The Java Programming Language, 4th Edition -
How to pass more than one parameter
Hello,
This is my code.
How to pass more than one parameter:
SELECT:responsibility_name responsibility_name,
LPAD(' ', 6*(LEVEL-1))
|| menu_entry.entry_sequence sequence ,
LPAD(' ', 6*(LEVEL-1))
|| menu.user_menu_name SubMenu_Description ,
LPAD(' ', 6*(LEVEL-1))
|| func.user_function_name Function_Description ,
LPAD(' ', 6*(LEVEL-1))
|| menu_entry.prompt prompt
,menu.menu_id ,
func.function_id
--menu_entry.grant_flag Grant_Flag ,
--DECODE( menu_entry.sub_menu_id , NULL, 'FUNCTION' , DECODE( menu_entry.function_id , NULL, 'SUBMENU' , 'BOTH') ) Type
FROM fnd_menu_entries_vl menu_entry ,
fnd_menus_tl menu ,
fnd_form_functions_tl func
WHERE menu_entry.sub_menu_id = menu.menu_id(+)
AND menu_entry.function_id = func.function_id(+)
AND MENU.LANGUAGE(+) = 'US'
AND FUNC.LANGUAGE(+) = 'US'
--AND func.user_function_name LIKE '%Primary Care Providers%'
AND grant_flag = 'Y'
START WITH menu_entry.menu_id =
(SELECT menu2.menu_id
FROM fnd_menus_tl menu2,apps.fnd_responsibility_vl resp
WHERE menu2.menu_id=resp.menu_id
and resp.responsibility_name= :responsibility_name
--and menu2.user_menu_name = ('ATCO HR INQ USER'
AND LANGUAGE = 'US'
CONNECT BY MENU_ENTRY.MENU_ID = PRIOR MENU_ENTRY.SUB_MENU_ID
and menu_entry.function_id not in (select func.function_id
from --fnd_form_functions_vl fnc,
apps.fnd_resp_functions exc,
apps.fnd_responsibility_vl res
where func.function_id = exc.action_id
and res.responsibility_name =:responsibility_name
and res.responsibility_id=exc.responsibility_id)
and menu_entry.sub_menu_id not in (select menu.menu_id
from --fnd_menus_vl imn,
apps.fnd_resp_functions exc,
apps.fnd_responsibility_vl res
where menu.menu_id = exc.action_id
and res.responsibility_name =:responsibility_name
and res.responsibility_id=exc.responsibility_id)
ORDER SIBLINGS BY menu_entry.entry_sequence;
Thank you for your help
ShuishenmingHi, Ming,
One way is to put the "parameters" in a table, and join to that table in your query. If you make it a Global Temporary Table, then multiple sessions can run the query at the same time, and each can be seeing different responsibilities.
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all the tables involved, and the results you want from that data. Since this problem involves parameters, you should give a couple of different sets of parameters, and the results you want from the same sample data for each set.
Explain, using specific examples, how you get those results from that data.
Always say what version of Oracle you're using (e.g. 11.2.0.2.0).
See the forum FAQ: https://forums.oracle.com/message/9362002 -
Function based indexes on object tables
Hi,
I am trying to create a function based index on an object table. I am getting the following error:
SQL> create index cell1_indx on cell1(create_cell1(id)) indextype is mdsys.spatial_index;
create index cell1_indx on cell1(create_cell1(id)) indextype is mdsys.spatial_index
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-13249: internal error in Spatial index: [mdidxrbd]
ORA-13249: Error in Spatial index: index build failed
ORA-13249: Stmt-Execute Failure: SELECT num_rows from all_tables where owner='ASHE' and table_name=
'CELL1'
ORA-06512: at "MDSYS.SDO_INDEX_METHOD_9I", line 7
ORA-06512: at line 1
Here cell1 is an object table.
Is the procedure for creating function based indexes on object tables different from relational tables?
ChinniOne of the many new features in Oracle 8i is the Function-Based Index (we will refrain from using FBI, but only just). This allows the DBA to create indexes on functions or expressions; these functions can be user generated pl/sql functions, standard SQL functions (non-aggregate only) or even a C callout.
A classic problem the DBA faces in SQL Tuning is how to tune those queries that use function calls in the where clause, and result in indexes created on these columns not to be used.
Example
Standard B-Tree index on SURNAME with cost based optimizer
create index non_fbi on sale_contacts (surname);
analyze index non_fbi compute statistics;
analyze table sale_contacts compute statistics;
SELECT count(*) FROM sale_contacts
WHERE UPPER(surname) = 'ELLISON';
Execution Plan
0 SELECT STATEMENT Optimizer=CHOOSE (Cost=3 Card=1 Bytes=17)
1 0 SORT (AGGREGATE)
2 1 TABLE ACCESS (FULL) OF 'SALES_CONTACTS' (Cost=3 Card=16 Bytes=272)
Now we use a function based index
create index fbi on sale_contacts (UPPER(surname));
analyze index fbi compute statistics;
analyze table sale_contacts compute statistics;
SELECT count(*) FROM sale_contacts WHERE UPPER(surname) = 'ELLISON';
Execution Plan
0 SELECT STATEMENT Optimizer=CHOOSE (Cost=2 Card=1 Bytes=17)
1 0 SORT (AGGREGATE)
2 1 INDEX (RANGE SCAN) OF 'FBI' (NON-UNIQUE) (Cost=2 Card=381 Bytes=6477)
The function-based index has forced the optimizer to use index range scans (retuning zero or more rowids) on the surname column rather than doing a full table scan (non-index lookup). Optimal performance does vary depending on table size, uniqueness and selectivity of columns, use of fast full table scans etc. Therefore try both methods to gain optimal performance in your database.
It is important to remember that the function-based B*Tree index does not store the expression results in the index but uses an "expression tree". The optimizer performs expression matching by parsing the expression used in the SQL statement and comparing the results against the expression-tree values in the function-based index. This comparison IS case sensitive (ignores spaces) and therefore your function-based index expressions should match expressions used in the SQL statement where clauses.
Init.ora Parameters
The following parameter must be set in your parameter file: QUERY_REWRITE_INTEGRITY = TRUSTED
QUERY_REWRITE_ENABLED = TRUE
COMPATIBLE = 8.1.0.0.0 (or higher)
Grants
Grants To create function-based indexes the user must be granted CREATE INDEX and QUERY REWRITE, or alternatively be granted CREATE ANY INDEX and GLOBAL QUERY REWRITE. The index owner must have EXECUTE access on the function used for the index. If execute access is revoked then the function-based index will be "disabled" (see dba_indexes).
Disabled Indexes
If your function-based index has a status of "disabled" the DBA can do one of the following:
a) drop and create the index (take note of its current settings)
b) alter index enable, function-based indexes only, also use disable keyword as required
c) alter index unusable.
Queries on a DISABLED index fail if the optimizer chooses to use the index.Here is an example ORA error:
ERROR at line 1: ORA-30554: function-based index MYUSER.FBI is disabled.
All DML operations on a DISABLED index also fail unless the index is also marked UNUSABLE and the initialization parameter SKIP_UNUSABLE_INDEXES is set to true.
Some more Examples
CREATE INDEX expression_ndx
ON mytable ((mycola + mycolc) * mycolb);
SELECT mycolc FROM mytable
WHERE (mycola + mycolc) * mycolb <= 256;
..or a composite index..
CREATE INDEX example_ndx
ON myexample (mycola, UPPER(mycolb), mycolc);
SELECT mycolc FROM myexample
WHERE mycola = 55 AND UPPER(mycolb) = 'JONES';
Restriction & Rule Summary
The following restrictions apply to function based indexes. You may not index:
a) LOB columns
b) REF
c) Nested table column
d) Objects types with any of the above data types.
Function-based indexes must always follow these rules:
a) Cost Based optimizer only, must generate statistics after the index is created
b) Can not store NULL values (function can not return NULL under any circumstance)
c) If a user defined pl/sql routine is used for the function-based index, and is invalidated, the index will become "disabled"
d) Functions must be deterministic (always return the same value for a known input)
e) The index owner must have "execute" access on function used in the function-based index. Revocation of the privilege will render the index "disabled"
f) May have a B-Tree and Bitmap index type only
g) Can not use expressions that are based on aggregate functions, ie. SUM, AVG etc.
h) To alter a function-based index as enabled, the function used must be valid, deterministic and the signature of the function matches the signature of the function when it was created.
Joel P�rez -
Doubt in pass of connection by parameter
I have a technical doubt about pass of parameters. I have a method to which I pass as parameter a connection with database like 'public void ejecutarSelect (Connection with, String selec)'. The connection comes opened to the method, and it only executes the select. The connection is closed out of the method.
Here my doubt comes. In java all parameter passed to a method is for value, I mean, to the beginning of the method is created a copy of the variables passed by parameter and at the end of the method it destroys them. But in case of the connection, does the method copy the pointer to the connection or really it clon the connection with database? I am interested becuase I want to know if I would be leaving connections open.
Thanks.Java passes all parameters by value. Parameters hold primitive types and Object references (not Objects). In your case the Object reference is being passed by value but that in effect causes the Object (Connection in your case) to be passed by reference.
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