I get the following error during postgresql execution:
ERROR [HY000] ERROR: you can only use a 'next value(s)' function within a target list
What is wrong with this sql statement:
SELECT TRFCON.ID
,
case when DDDCON.ID_CON = 0
then
NEXT VALUE FOR SEQ_DDD_CON
else
DWHCON.ID_CON
end ID_CON
FROM TTT_CONSUMPTION TTTCON
join DDDDWH_CON DWHCON on TTTCON.ID_ORG = DDDCON.ID_ORG
and TTTCON.ID_PRO = DDDCON.ID_PRO
and TTTCON.ID_REF = DDDCON.ID_REF
The DDL of the sequence is the following:
CREATE SEQUENCE SEQ_DDD_CON AS BIGINT
START WITH 1
INCREMENT BY 1
NO MINVALUE
NO MAXVALUE
NO CYCLE;
From the docs for CREATE SEQUENCE
Compatibility
CREATE SEQUENCE conforms to the SQL standard, with the following exceptions:
[...]
Obtaining the next value is done using the nextval() function instead of the standard's NEXT VALUE FOR expression.
Related
The following fucntion is used to get all records from a sql table where the name( this is a column) is equal to temp(A variable which has been assigned)
But when I run the function it shows
mysql.connector.errors.ProgrammingError: 1054 (42S22): Unknown column 'temp' in 'where clause'
THE CODE IS:
def filter():
global temp
temp = f_dob.get()
print(temp)
my_cursor.execute("SELECT * FROM mk WHERE name = temp")
result=my_cursor.fetchall()
for row in rows:
print(row)
tree.insert("", tk.END, values=row)
I am writing the code on sublime text editor and running it on git bash
You need to bind the temp Python variable to the query:
temp = f_dob.get()
sql = "SELECT * FROM mk WHERE name = %s"
my_cursor.execute(sql, (temp,))
result = my_cursor.fetchall()
In addition, you should be careful to open your MySQL database cursor in prepared statement mode. So, your code should look something like this:
my_cursor = conn.cursor(prepared=True)
I have a client who wants to drop a list of values into a parameter in Reporting Services, compare it to a table in her database and return the full list of values with a yes or no in the next field indicating whether the value is found in the database table. For example if her list is Duck, Horse, Chicken and only Duck exists in the table she wants the result to look like this:
Duck Yes
Horse No
Chicken No
She doesn't want to return only those values that match so a simple WHERE Animal IN (#ReportParameter1) isn't going to do it.
I can make this work for a single value parameter like this:
DECLARE #FarmAnimals AS TABLE (Animal varchar(50))
INSERT INTO #FarmAnimals VALUES (#ReportParameter1)
SELECT Animal
,'In Barnyard’ = CASE WHEN EXISTS
(SELECT *
FROM tblBarnyard
WHERE BarnyardAnimal = Animal)
THEN 'Yes'
ELSE 'No'
END
FROM #FarmAnimals
But is it possible to loop through a multiple value parameter of unspecified length and create an INSERT INTO statement for each individual value? If this isn't possible I'm happy to tell her it can't be done but I can't think of a time I've found that something was impossible in SQL.
There's no need to do it in SQL, you can just write a custom code function to iterate through the selected parameter values to get the result that you want.
On the Report menu, access Report Properties... and select the Code tab. Insert the following code:
Function IsFieldSelected (fieldValue as String, ByVal parameter As Parameter) As String
Dim Result As String
Result = "No"
If parameter.IsMultiValue Then
For i As integer = 0 To parameter.Count-1
If (fieldValue = parameter.Value(i)) Then
Result = "Yes"
End If
Next
Else
If (fieldValue = parameter.Value) Then
Result = "Yes"
End If
End If
Return Result
End Function
then use this expression in the cell that you want the "Yes/No" to access the result:
=Code.IsFieldSelected(Fields!MyField.Value, Parameters!MyParameter)
Note that you are passing the parameter object here, not the Value property (so don't put .Value on the end). We access the Value property of the parameter object in the custom code function and compare it to the field value passed.
This will work for both single- and multi-value parameters.
You can do this using the STRING_SPLIT function in SQL Server.
--Placeholder table
DECLARE #ExistingValuesInTable TABLE (Val VARCHAR(255)) ;
INSERT INTO #ExistingValuesInTable (Val) VALUES ('Duck') ;
--
DECLARE #UserInput VARCHAR(255) = 'Duck, Horse, Chicken' ;
SELECT ss.value,
CASE WHEN evit.Val IS NULL THEN 'No' ELSE 'Yes' END AS AlreadyExists
FROM STRING_SPLIT(#UserInput, ',') AS ss
LEFT OUTER JOIN #ExistingValuesInTable AS evit ON ss.value = evit.Val ;
I have stored procedure and function and I am calling the function in the stored procedure in ORACLE.The function CalculateIncomeTax is what is giving me errors.In MSSQL,this type of update is possible because I have done it before.I called the function in the stored procedure.When I read around the answer I get is to use a package before I cannot use a function to update a table from another table.Please if you have any idea,tell me.The error I get is
table string.string is mutating, trigger/function may not see it
Cause: A trigger (or a user defined plsql function that is referenced in this statement) attempted to look at (or modify) a table that was in the middle of being modified by the statement which fired it.
Action: Rewrite the trigger (or function) so it does not read that table.
This is function
CREATE OR REPLACE function CalculateIncomeTax(periodId NVARCHAR2,
employeeId NVARCHAR2, taxableIncome NUMBER)return NUMBER
AS
IncomeTax NUMBER (18,4);Taxable NUMBER(18,4);
BEGIN
SELECT SUM(CASE WHEN (taxableIncome > T.TAX_CUMMULATIVE_AMOUNT)
THEN (taxableIncome - T.TAX_CUMMULATIVE_AMOUNT)* T.TAX_PERCENTAGE/ 100
ELSE 0.00 END ) INTO IncomeTax
FROM TAX_LAW T JOIN PAY_GROUP P ON P.PAY_FORMULA_ID =T.TAX_FORMULA_ID
JOIN PAYROLL_MASTER PP ON P.PAY_CODE =PP.PAY_PAY_GROUP_CODE
WHERE PP.PAY_EMPLOYEE_ID = employeeId AND PP.PAY_PERIOD_CODE = periodId;
if IncomeTax IS NULL THEN IncomeTax :=0;
end if;
return IncomeTax;
end;/
This is the stored procedure
CREATE OR REPLACE PROCEDURE PROCESSPAYROLLMASTER (periodcode
VARCHAR2) AS BEGIN
INSERT INTO PAYROLL_MASTER
(
PAY_PAYROLL_ID,PAY_EMPLOYEE_ID ,PAY_EMPLOYEE_NAME,PAY_SALARY_GRADE_CODE
,PAY_SALARY_NOTCH_CODE,PAY_BASIC_SALARY,PAY_TOTAL_ALLOWANCE
,PAY_TOTAL_CASH_BENEFIT,PAY_MEDICAL_BENEFIT,PAY_TOTAL_BENEFIT
,PAY_TOTAL_DEDUCTION,PAY_GROSS_SALARY,PAY_TOTAL_TAXABLE,PAY_INCOME_TAX
,PAY_TAXABLE,PAY_PERIOD_CODE,PAY_BANK_CODE,PAY_BANK_NAME,PAY_BANK_ACCOUNT_NO
,PAY_PAY_GROUP_CODE )
SELECT
1,
E.EMP_ID AS PAY_EMPLOYEE_ID ,
E.EMP_FIRST_NAME || ' ' || E.EMP_LAST_NAME AS PAY_EMPLOYEE_NAME,
E.EMP_RANK_CODE,
'CODE',
(SC.SAL_MINIMUM_AMOUNT+( SN.SAL_SALARY_PERCENTAGE *
SC.SAL_MINIMUM_AMOUNT)/100) AS PAY_BASIC_SALARY,
0,
0,
0,
0,
0,
0,
0,
0,
0,
periodcode,
'BANKCODE',
'BANKNAME',
'BANKNUMBER',
'GENERAL'
FROM EMPLOYEE E
LEFT JOIN SALARY_SCALE SC ON SC.SAL_RANK_CODE = E.EMP_RANK_CODE
LEFT JOIN SALARY_NOTCH SN ON SC.SAL_ID = SN.SAL_SALARYSCALE_ID
WHERE E.EMP_RANK_CODE = SC.SAL_RANK_CODE AND E.EMP_STATUS=2;
CALCULATEALLOWANCE(v_payrollId,periodcode);
CALCULATECASHBENEFITS(v_payrollId,periodcode);
CALCULATEDEDUCTIONS(v_payrollId,periodcode);
-- UPDATE PAYROLL PAY_INCOME_TAX
UPDATE PAYROLL_MASTER PM SET PM.PAY_INCOME_TAX = CalculateIncomeTax(PM.PAY_PERIOD_CODE,PM.PAY_EMPLOYEE_ID,PM.PAY_TOTAL_TAXABLE) WHERE PM.PAY_PAYROLL_ID = v_payrollId;
UPDATE PAYROLL_PROCESS set PAY_CANCELLED = 1 WHERE PAY_PAY_GROUP_CODE='GENERAL' AND PAY_PERIOD_CODE=periodcode
AND PAY_ID<>v_payrollId;
COMMIT;
END ;
/
The function is querying the same table you are updating, which is what the error is reporting. As it happens you are not changing the value of the column you're querying, but Oracle doesn't check to that level - not least because there could be, for instance, a trigger that has less obvious side-effects.
The best solution really would be to not have to update at all, and to calculate and set all the value as part of the original insert, by joining to all the relevant tables. But you are already calling other procedures which are, presumably, updating some of the values you're inserting as zeros, including pay_total_taxable.
Unless you're able to reevaluate those as well, you may be stuck with doing a further update. In which case, you could remove the reference to the payroll_master table from the function and instead pass in the relevant data.
I think this is equivalent, though with out the table structures, sample data and what the other procedures are doing it's hard to be sure (so this is untested, obviously):
create or replace function calculateincometax (
p_periodid nvarchar2,
p_employeeid nvarchar2,
p_paypaygroupcode payroll_master.pay_pay_group_code%type,
p_taxableincome number
) return number as
l_incometax number(18, 4);
begin
select coalesce(sum(case when p_taxableincome > t.tax_cummulative_amount
then (taxableincome - t.tax_cummulative_amount) * t.tax_percentage / 100
else 0 end), 0)
into l_incometax
from tax_law t
join pay_group p
on p.pay_formula_id = t.tax_formula_id
where p.pay_code = p_paypaygroupcode;
return l_incometax;
end;
/
and then include the extra argument in your call:
update payroll_master pm
set pm.pay_income_tax = calculateincometax(pm.pay_period_code, pm.pay_employee_id,
pm.pay_pay_group_code, pm.pay_total_taxable)
where pm.pay_payroll_id = v_payrollid;
Although v_payrollid isn't defined in what you've shown, so even that isn't entirely clear.
I've also modified the function argument and local variable names with prefixes to remove potential ambiguity (which you seem to do by removing underscores from the names), removed the unused variable, and added a coalesce() call in place of the separate null check. Those things aren't directly relevant to the approach though.
As I have mentioned in my question title below Mysql function returns null always :
CREATE DEFINER=`root`#`localhost` FUNCTION `nextCode`(tbl_name VARCHAR(30), prv_code VARCHAR(30)) RETURNS varchar(30) CHARSET utf8
READS SQL DATA
BEGIN
DECLARE nxtCode VARCHAR(30);
SELECT ds.prefix, ds.suffix, ds.is_used, ds.next_number, CHAR_LENGTH(ds.pattern)
INTO #prefix, #suffix, #isUsed, #nxtNum, #pLength
FROM ths_inventory.doc_sequnce ds WHERE ds.`table_name` = tbl_name;
SET nxtCode = CONCAT(#prefix, LPAD((CASE WHEN #isUsed
THEN
(ExtractNumber(prv_code) + 1)
ELSE
(#nxtNum)
END
), #pLength,'0'), #suffix);
RETURN nxtCode;
END
But once I change the below line :
CONCAT(#prefix, LPAD((CASE WHEN #isUsed
THEN
(ExtractNumber(prv_code) + 1)
ELSE
(#nxtNum)
END
), #pLength,'0'), #suffix)
To some static values like below :
CONCAT('PR', LPAD((CASE WHEN true
THEN
(ExtractNumber(prv_code) + 1)
ELSE
(5)
END
), 6,'0'), '')
function start returning values accordingly.
Here is how I call my function :
nextCode('item','PR000002');
UPDATE:
I defined this function to get the next possible code for Item table :
According to my requirement the next possible code should be PR000000005.
But instead of getting it, I always get empty result .
SELECT nextCode('item',(SELECT `code` FROM item ORDER BY id DESC LIMIT 1)) AS next_code;
Any help would be appreciable.
Run a query that uses the function, and then...
SELECT #prefix, #suffix, #isUsed, #nxtNum, #pLength;
...to inspect the values. The # prefix means these are user-defined variables, so they have session scope, not program scope, and will still hold their values after the funcfion executes.
This should help pinpoint your problem.
But, you have two other problems you will need to solve after that.
SELECT ... INTO does not set the target variables when no row matches the query, so once you fix your issue, you will get very wrong results if you pass in arguments that don't match anything.
To resolve this, the function needs to set all these variables to null before the SELECT ... INTO query.
SET #prefix = NULL, #suffix = NULL, #isUsed = NULL, #nxtNum = NULL, #pLength = NULL;
See https://dba.stackexchange.com/a/35207/11651.
Also, your function does not handle concurrency, so two threads trying to find the "next" value for the same table, concurrently, will produce the same answer, so you will need to insure that your code handles this correctly with unique constraints and transactions or other appropriate locks.
Hi all i have been writing a query and it is driving me crazy because it is giving me syntax error for ''
my query is
UPDATE test1 SET result =
CASE WHEN formula = "p1+p2" THEN 2
the error is here on line 2
any help is highly appreciated.
A case should always have an end:
UPDATE test1
SET result = (CASE WHEN formula = 'p1+p2' THEN 2 END);
This sets result to either "2" or NULL. You probably want:
UPDATE test1
SET result = 2
WHERE formula = 'p1+p2';
As a general rule, use single quotes for string constants. This is the ANSI standard.