I need to snowflake how to create dummy stored procedure with out put array as push in snowflake.
Dummy stored procedure using Snowflake Scripting:
CREATE PROCEDURE dummy()
RETURNS ARRAY
LANGUAGE SQL
AS
$$
begin
return ARRAY_CONSTRUCT(1,2,3);
end;
$$;
CALL dummy();
-- [ 1, 2, 3 ]
DESC RESULT LAST_QUERY_ID();
-- name type kind
-- DUMMY ARRAY COLUMN
Since you mentioned pushing to the array, I'll add to Lukasz's answer to show a JavaScript example with pushing to the array in a loop:
create or replace procedure ARRAY_SAMPLE()
returns array
language javascript
as
$$
var arr = [];
var rs = snowflake.execute({sqlText:'select N_NAME from SNOWFLAKE_SAMPLE_DATA.TPCH_SF1.NATION'});
while (rs.next()) {
arr.push(rs.getColumnValue('N_NAME'));
}
return arr;
$$;
call ARRAY_SAMPLE();
Related
My code obtains the column list of a table I have created
the attributes of this table are the contextual values of a session in snowflake
such as USER,DATABASE,WAREHOUSE...ETC
Afterwards it places those attribute names into an array
I then try to call on these names in making an insert query and this is where I am struggling with the syntax
Because each value in my array is USER, DATABASE,WAREHOUSE
I am trying to call on the context functions
like CURRENT_WAREHOUSE()
Can someone please help me with the syntax
for(i=0;i<arr.length;i++){
v_sqlCode = `INSERT INTO SESSION_ATTRIBUTES( arr[i] )
"VALUES ("CALL CURRENT_"+arr[i]+"()")';
}
You can't directly use the output of a Snowflake stored procedure programmatically. If you need to use the output value, you have to collect it using the RESULT_SCAN table function. That can get a bit complex to handle, directly in code, so it's far better to place it into a helper function. See this example of one SP calling another one and using its output value. It does this by calling the SP using the callSP helper function. Use the entire SQL statement including the call command into the SQL parameter for that function. It will run the SP, grab the result from the result_scan table function and return it.
create or replace procedure HELLO_WORLD()
returns string
language javascript
as
$$
return "Hello, world.";
$$;
create or replace procedure CALL_HELLO_WORLD()
returns string
language javascript
execute as caller
as
$$
return callSP(`call HELLO_WORLD()`);
// ---- Main function above, helper functions below.
function callSP(sql){
let cmd = {sqlText: sql};
let stmt = snowflake.createStatement(cmd);
stmt.execute();
let result_scan = `select $1 from table(result_scan(last_query_id()));`;
let result_cmd = {sqlText: result_scan};
let result_stmt = snowflake.createStatement(result_cmd);
let rs = stmt.execute();
if(rs.next()) {
return rs.getColumnValue(1);
} else {
return null;
}
}
$$;
call call_hello_world();
I'm kinda new into pgplsql and so far I have to create a function that loops an array that is received as a function.
The main idea of the function is to insert new records into a table that maps each id contained in the array received with a new formatted id, the format depends on the second parameter received and return the table "idsTable".
The problem is that when I try to create the function it sends me an error:
ERROR: loop variable of FOREACH must be a known variable or list of variables
LINE 38: FOREACH objectid IN ARRAY idsList LOOP
I'm not sure if I have to declare the objectid variable cause in the examples that I have seen they didn't.
So far I have this:
CREATE OR REPLACE FUNCTION createId(idsList varchar[], objectType varchar)
RETURNS TABLE(original_id varchar, new_id char) as
$$
BEGIN
IF LOWER(objectType) = 'global' THEN
FOREACH objectid IN ARRAY idsList LOOP
INSERT INTO idsTable(original_id, new_id)
VALUES(objectid, 'GID'||nextval('mapSquema.globalid')::TEXT);
END LOOP;
ELSE
FOREACH objectid IN ARRAY idsList LOOP
INSERT INTO idsTable(original_id, new_id)
VALUES(objectid, 'ORG'||nextval('mapSquema.globalid')::TEXT);
END LOOP;
END IF;
END;
$$ LANGUAGE plpgsql;
Any ideas of what could be wrong?
edit: I haven't add the part where the idsTable is returned.
Unrelated, but: you don't really need a loop for that. And you can simplify the function by only writing the INSERT once. You also forgot to return something from your function. As it is declared as returns table that is required:
CREATE OR REPLACE FUNCTION createid(idslist varchar[], objecttype varchar)
RETURNS TABLE(original_id varchar, new_id varchar) as
$$
declare
l_prefix text;
BEGIN
IF LOWER(objectType) = 'global' THEN
l_prefix := 'GID';
ELSE
l_prefix := 'ORG';
END IF;
RETURN QUERY --<< return the result of the insert
INSERT INTO idstable(original_id, new_id)
select t.x, l_prefix||nextval('mapSquema.globalid')::TEXT
from unnest(idslist) as t(x)
returning *
END;
$$ LANGUAGE plpgsql;
To pass an array of number to oracle stored procedure, I created a type like this:
create or replace type wareconfig_array as table of NUMBER;
Then I created my procedure like this, when I compile, it shows success, then I pass an array like: [1,2] to m_array when I run it, it throws an error: "ORA-06531:Reference to uninitialized collection" Can you tell me what I did wrong? Thanks very much!
create or replace procedure delete_waregroup(m_array in wareconfig_array) is
begin
for i in 1..m_array.count loop
update "warehouse_group" set "deleted"=1 where "id"=m_array(i);
end loop;
commit;
EXCEPTION
when others THEN
save_proc_error('proc',sqlcode,'删除仓库组信息发生异常！',sqlerrm);
raise_application_error(-20003,'数据操作异常！异常编码：'|| sqlcode || '异常描述：'|| sqlerrm||dbms_utility.format_error_backtrace());
rollback; ---回滚
end delete_waregroup;
Try:
declare
x wareconfig_array;
begin
x := wareconfig_array(1,3); -- initialize an array and fill it with values
delete_waregroup( x );
end;
/
live (working) demo: http://sqlfiddle.com/#!4/af403e/1
Below is the SQL Server's syntax to select variable as a record
DECLARE #number AS INTEGER;
SET #number = 10;
SELECT #number;
How can I do this in ORACLE?
Thanks in advance.
Regards,
Sagar Nannaware
Edited based on comment:
One way you can access the variable value assigned by a procedure is through a function again.
Example:
CREATE OR REPLACE PROCEDURE your_procedure(out_number OUT number)
IS
BEGIN
out_number:=1;
END;
function to retrieve the procedure's output
CREATE OR REPLACE FUNCTION your_function
RETURN number
AS
o_param number;
BEGIN
o_param := NULL;
your_procedure(o_param);
RETURN o_param;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
return 0; --basically how you want to handle your errors.
END your_function;
Now you can select the output of the procedure
select your_function from dual;
Useful link how to access an Oracle procedure's OUT parameter when calling it?
If you are trying to create a variable to access anywhere in your application in oracle.
You can do it by creating function and calling it from dual.
SQL>create or replace function foo return number
as
x number;
begin
x:=1;
return 1;
end;
Function created.
SQL>select foo from dual;
FOO
----------
1
Please check following link for more details
[example link] (http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1562813956388)
Please any one tell me how to discards the scalar value in stored procedure?
this is my SP
CREATE PROCEDURE testdata
AS
BEGIN
SET NOCOUNT ON;
SELECT c.CustomerName,c.CustomerCode, a.Address, a.Email,a.phone,a.ZipCode
from Customer c
join Address a on c.CustomerCode = a.CustomerCode
END
GO
This is my C# code
CustomerDataEntities enty = new CustomerDataEntities();
var productEntity = enty.testdata123();
// error foreach statement cannot operate on variables of type int
foreach (var prd in productEntity)
{
}
return CustomerList;
Thanks.
Based just on what you're showing here, I'm assuming your stored procedure is set up as an imported function. I would guess that you are not mapping the results of this function to an entity type.