I have the following method in my model:
def is_user_in_role (security_user_id, role)
SecurityUser.joins(:security_users_roles)
.where(security_users_roles:{role:role})
.exists?("security_users.id=#{security_user_id}")
end
The issue is that the "security_user_id" is not "translated" correctly in the SQL statements. It is always interpreted as "0".
This is a simple output of the generated SQL passing 'Instructor' and '9' as parameters values:
SecurityUser Exists (0.0ms) SELECT 1 AS one FROM security_users INNER JOIN security_users_manage_securities ON security_users_manage_securities.security_user_id = security_users.id INNER JOIN security_users_roles ON security_users_roles.id = security_users_manage_securities.security_users_role_id WHERE security_users_roles.role = 'Instructor' AND security_users.id = 0 FETCH FIRST ROW ONLY
You can see at the end:
security_users.id = 0
Could you tell me how should I transform the exists clause in order to use it with parameter?
I have found it. In order to pass parameters in the exists clause, you should use an array like this:
def is_user_in_role (security_user_id, role)
SecurityUser.joins(:security_users_roles)
.where(security_users_roles:{role:role})
.exists?(["security_users.id=#{security_user_id}"])
end
Related
I have a complex SQL query where I have a few cases that use END AS variableName. I then use variableName to do some logic and then create a new variable which I want in the output result. However when I run the query, all the END AS variableNames that I have used are also outputted in the results.
Is there a way that I can exclude these variables as I only want the final variable that uses these variableNames.
Thanks
EDIT, here is a query explaining my problem
SELECT DISTINCT
mt.src_id AS “SRC_ID”,
CASE
WHEN mt.cd = ‘TAN’ THEN
(
(
SELECT SUM(src_amt)
FROM source_table st
WHERE mt.id = st.id
AND st._cd = ‘TAN’
AND st.amt_cd = ‘ABL’)
)
END AS src_amt
FROM MAIN_TABLE mt
WHERE
mf.dt >= 2021-12-12
AND SRC_AMT > 10
I need SRC_AMT to be used as some sort of logic but when I run the query, it prints out in the output as it's own column. I want to ignore this variable
you can wrap the whole thing into a new select-statement:
select SRC_ID from ( <entire previous query here> )
I'm having a Sql code like as follows
Select a.ItemCode, a.ItemDesc
From fn_BOM_Material_Master('A', #AsOnDate, #RptDate, #BranchID, #CompID)a
Left Outer Join fn_INV_AsOnDate_Stock(#StockDate, #AsOnDate, #RptDate, #BranchID, #CompID, #Finyear)b
On a.ItemCode=b.ItemCode and b.WarehouseCode<>'WAP'
and a.BranchID=b.BranchID and a.CompID=b.COmpID
Where a.ItemNatureCode = 'F' and a.BranchID = #BranchID and a.CompID = #CompID
Group by a.ItemCode, a.ItemDesc
Having sum(b.CBQty)<=0
Here the problem is that im passing an "#ShowZeroStock" value as as bit if the "#ShowZeroStock" value is '1' then Having should not be validated or (i.e: All values from the table should be returned including zero)
So How to change the query based on passed bit value "#ShowZeroStock"
I can Use "If else " condition at the top and remove having in else part, but for a lengthy query i can't do the same.
Is this the logic you want?
Having sum(b.CBQty) <= 0 or #ShowZeroStock = 1
I am new with SQL.
How can I write a query, where the Where condition be dependent on a statement which it will be given from a user?
I have this:
SELECT TablePersdaten.Vorname, TablePersdaten.Nachname, TableBezahlung.Datum, TableBezahlung.BelegNr, TableBezahlung.Betrag, Sum(TableBezahlung.Betrag) AS SummevonBetrag
FROM ((TableTeilnehmer INNER JOIN TablePersdaten ON TableTeilnehmer.IDPersdaten = TablePersdaten.IDPersdaten) INNER JOIN TableKurse ON TableTeilnehmer.IDKurs = TableKurse.IDKurs) INNER JOIN TableBezahlung ON TableTeilnehmer.IDTeilnehmer = TableBezahlung.IDStudent
WHERE TableBezahlung.Datum = "VALUE GIVEN FROM USER"
GROUP BY TablePersdaten.Vorname, TablePersdaten.Nachname, TableBezahlung.Datum, TableBezahlung.BelegNr, TableBezahlung.Betrag
ORDER BY TableBezahlung.Datum;
EDIT: I'm using Access 2013, but I'm coding everything myself with SQL-Code. The values should be given through a form.
Research stored procedures. You can include user input as a parameter and then pass it to a WHERE clause through a declared parameter.
So ideally it would go something like (and beware of the INT part it may have to have a different value that corresponds to table.datum:
CREATE PROCEDURE dbo.Proc1
#parameter1 INT
AS
BEGIN
SELECT TablePersdaten.Vorname, TablePersdaten.Nachname, TableBezahlung.Datum, TableBezahlung.BelegNr, TableBezahlung.Betrag, Sum(TableBezahlung.Betrag) AS SummevonBetrag
FROM ((TableTeilnehmer INNER JOIN TablePersdaten ON TableTeilnehmer.IDPersdaten = TablePersdaten.IDPersdaten) INNER JOIN TableKurse ON TableTeilnehmer.IDKurs = TableKurse.IDKurs) INNER JOIN TableBezahlung ON TableTeilnehmer.IDTeilnehmer = TableBezahlung.IDStudent
WHERE TableBezahlung.Datum = #parameter1
GROUP BY TablePersdaten.Vorname, TablePersdaten.Nachname, TableBezahlung.Datum, TableBezahlung.BelegNr, TableBezahlung.Betrag
ORDER BY TableBezahlung.Datum;
END
And of course execute the procedure after creation:
EXEC dbo.Proc1 '#parameter1value'
If you parameterize the input "VALUE GIVEN FROM USER" that might be what you're after.
...
WHERE TableBezahlung.Datum = &UserValue
...
The single '&' will substitute that value once. If you use '&&', it will substitute that value through the end of your session.
This is driving me crazy. I want to do simple comparison of a column and a variable but it just doesn't work. The QUERY 1 in following code returns me my value when i do a simple select, but i use the resulting variable in my 2nd query it just doesn't work..
It looks sooooo simple but I've been working on this for hours. The complete sql proc is
The big confusing thing is that if I replace v_bbg_symbol with some hard coded 'Value' (like 'FEDL01') it gives a correct answer for Query 2, but when I use the variable v_bbg_symbol it just doesn't work any more
Declare
v_bbg_symbol VARCHAR2(50);
V_OLD_INS_NAME Varchar2(50);
Begin
--QUERY 1
SELECT BBG_SYMBOL into v_bbg_symbol FROM quotes_external WHERE ID = 1;
--Gives output - 'FEDL01'
DBMS_OUTPUT.PUT_LINE('I got here:'||v_bbg_symbol||' is my value');
-QUERY 2
SELECT NAME INTO V_OLD_INS_NAME FROM INSTRUMENT
JOIN CURVE_INSTRUMENT ON
INSTRUMENT.INSTRUMENT_ID = CURVE_INSTRUMENT.INSTRUMENT_ID
JOIN GENERIC_INSTRUMENT ON
CURVE_INSTRUMENT.GENERIC_INSTRUMENT_ID = GENERIC_INSTRUMENT.GENERIC_INSTRUMENT_ID
WHERE CURVE_INSTRUMENT.CURVE_SNAPSHOT_ID =
(SELECT MAX(CURVE_INSTRUMENT.CURVE_SNAPSHOT_ID) FROM CURVE_INSTRUMENT)
AND GENERIC_INSTRUMENT.INSTRUMENT_NAME = v_bbg_symbol;
--ORACLE ERROR 'No Data Found'
DBMS_OUTPUT.PUT_LINE('I got here:'||V_OLD_INS_NAME||' is the new value');
END;
The first 'SELECT' gives me value which i select INTO a variable 'v_bbg_symbol', but when I use the same variable 'v_bbg_symbol' in my 2nd QUERY it pretends as if there is no value passed and does not return any result. If I give static value of 'v_bbg_symbol' i.e. ('FEDL01' in this case) in my 2nd QUERY, the results come as expected.
Please help..
Here is your query, with table aliases to facilitate following it:
SELECT NAME INTO V_OLD_INS_NAME
FROM INSTRUMENT i JOIN
CURVE_INSTRUMENT ci
ON i.INSTRUMENT_ID = ci.INSTRUMENT_ID JOIN
GENERIC_INSTRUMENT gi
ON ci.GENERIC_INSTRUMENT_ID = gi.GENERIC_INSTRUMENT_ID
WHERE ci.CURVE_SNAPSHOT_ID = (SELECT MAX(ci.CURVE_SNAPSHOT_ID) FROM CURVE_INSTRUMENT ci) and
gi.INSTRUMENT_NAME = v_bbg_symbol;
What this says is that the maximum ci.curve_snapshot_id is not for the instrument that is associated with v_bbg_symbol. I think you want a correlated subquery:
SELECT NAME INTO V_OLD_INS_NAME
FROM INSTRUMENT i JOIN
CURVE_INSTRUMENT ci
ON i.INSTRUMENT_ID = ci.INSTRUMENT_ID JOIN
GENERIC_INSTRUMENT gi
ON ci.GENERIC_INSTRUMENT_ID = gi.GENERIC_INSTRUMENT_ID
WHERE ci.CURVE_SNAPSHOT_ID = (SELECT MAX(ci2.CURVE_SNAPSHOT_ID)
FROM CURVE_INSTRUMENT ci2
WHERE ci2.instrument_id = i.instrument_id
) and
gi.INSTRUMENT_NAME = v_bbg_symbol;
This is the only place that I get all answer ;)
I want to select :
SELECT
RTRIM(LTRIM(il.Num_bloc)) AS Bloc,
RTRIM(LTRIM(il.num_colis)) AS Colis,
cd.transporteur AS Coursier,
cd.origine AS Origine,
cd.destination AS Destinataire,
cd.adresse AS [Adresse Destinataire],
cd.poids AS Poids,
il.Signataire, il.num_cin AS CIN, il.date_livraison AS [Date Livraison]
FROM
dbo.cd
INNER JOIN
dbo.il ON cd.bloc = il.Num_bloc AND dbo.cd.colis = dbo.il.num_colis
WHERE
(il.Num_bloc = RTRIM(LTRIM(#ParamBloc)))
AND (il.num_colis = RTRIM(LTRIM(#ParamColis)))
In the way of getting result if the user put ether #ParamBloc or #ParamColis
Try using IsNull() function.
A simple query would go like this
Select * from yourTable
Where
Num_bloc = ISNULL(#ParamBloc, Num_block) AND
num_colis = ISNULL(#ParamColis, num_colis)
The second parameter would make the expression to true if the #parameter Bloc or Colis is null. This query would be useful for all 4 possible combination of these two parameter.