For testing in Toad, I have the following code
select ...
from ...
where term_code = :termcode AND
(
case
when :theSubject is not null then SUBJ_CODE = :theSubject
else 1 = 1
end
)
AND ptrm_code <> 8
In short: If theSubject is not entered (is null) I want to display all the courses, otherwise I want to display only those where subject_code is the same as the one entered in the variable window in Toad.
But I get an error:
[Error] Execution (77: 68): ORA-00905: missing keyword
in here:
when :theCourse is not null then sect.SSBSECT_SUBJ_CODE = theCourse
You can use boolean logic:
where
term_code = :termcode
and (:theSubject is null or subj_code = :theSubject)
Related
SELECT CASE (SELECT Count(1)
FROM wf_item_activity_statuses_v t
WHERE t.activity_label IN ('WAITING_DISB_REQ',
'LOG_DDE',
'LOG_SENDBACK_DDE')
AND t.item_key IN(
SELECT r.i_item_key
FROM wf_t_item_xref r
WHERE r.sz_appl_uniqueid = '20400000988')
)
WHEN 0 THEN
(
delete
from t_col_val_document_uploaded p
WHERE p.sz_application_no = '20400000988'
AND p.sz_collateral_id = 'PROP000000000PRO1701'
AND p.i_item_key = '648197'
AND p.i_document_srno = '27' )
WHEN 1 THEN
(
DELETE
FROM t_col_val_document_uploaded p
WHERE p.sz_application_no = '20400000988'
AND p.sz_collateral_id = 'PROP000000000PRO1701'
AND p.i_document_srno = '28' )
ELSE NULL
END
FROM dual;
You need to recreate your query and make sure to follow the flow of the clauses properly, please check the next two links to get a better understanding :
[ORA-00936: missing expression tips]
How do I address this ORA-00936 error?
Answer: The Oracle oerr utility notes this about the ORA-00936 error:
ORA-00936 missing expression
Cause: A required part of a clause or expression has been omitted. For example, a SELECT statement may have been entered without a list of columns or expressions or with an incomplete expression. This message is also issued in cases where a reserved word is misused, as in SELECT TABLE.
Action: Check the statement syntax and specify the missing component.
The ORA-00936 happens most frequently:
1 - When you forget list of the column names in your SELECT statement.
2. When you omit the FROM clause of the SQL statement.
ora-00936-missing-expression
I hope this can help you.
You cannot use a simple select query like this. You have to use a PL/SQL block like below -
DECLARE NUM_CNT NUMBER := 0;
BEGIN
SELECT Count(1)
INTO NUM_CNT
FROM wf_item_activity_statuses_v t
WHERE t.activity_label IN ('WAITING_DISB_REQ',
'LOG_DDE',
'LOG_SENDBACK_DDE')
AND t.item_key IN(SELECT r.i_item_key
FROM wf_t_item_xref r
WHERE r.sz_appl_uniqueid = '20400000988');
IF NUM_CNT = 0 THEN
delete
from t_col_val_document_uploaded p
WHERE p.sz_application_no = '20400000988'
AND p.sz_collateral_id = 'PROP000000000PRO1701'
AND p.i_item_key = '648197'
AND p.i_document_srno = '27';
ELSIF NUM_CNT = 1 THEN
DELETE
FROM t_col_val_document_uploaded p
WHERE p.sz_application_no = '20400000988'
AND p.sz_collateral_id = 'PROP000000000PRO1701'
AND p.i_document_srno = '28' )
END IF;
END;
I am translating a query from PostgreSQL to SQL Server. I didn't write the query in PostgreSQL and it's quite complicated for my knowledge so i don't understand every piece of it.
From my understand: we are trying to find the max version from p_policy and when insurancestatus = 7 or 14 / transactiontype = CAN, we compare two dates (whose format are BIG INT).
This is the PG Query:
SELECT *
FROM BLABLABLA
WHERE
pol.vnumber = (
SELECT MAX(pol1.vnumber)
FROM p_policy pol1
AND ( CASE WHEN pol1.insurancestatus IN (7,14)
or pol1.transactiontype IN ('CAN')
-- ('CAN','RCA')
THEN pol1.veffectivedate = pol1.vexpirydate
ELSE pol1.veffectivedate <> pol1.vexpirydate
END
)
AND pol1.vrecordstatus NOT IN (30,254)
etc.
I am used to have a where statement where I compare it to a value. I understand here from the Case statement we will have a boolean, but still that must be compared to something?
Anyway the main purpose is to make it work in SQL, but I believe SQL can't read a CASE statement where THEN is a comparison.
This is what I tried:
SELECT *
FROM BLABLABLA
WHERE pol.vnumber =
(
SELECT MAX(pol1.vnumber)
FROM p_policy pol1
WHERE sbuid = 4019
AND ( CASE WHEN pol1.insurancestatus IN (7,14)
or pol1.transactiontype IN ('CAN')
THEN CASE
WHEN pol1.veffectivedate = pol1.vexpirydate THEN 1
WHEN pol1.veffectivedate <> pol1.vexpirydate THEN 0
END
END
)
AND pol1.vrecordstatus NOT IN (30,254)
etc.
And then I get this error from SQL Server (which directly the last line of the current code - so after the double case statement)
Msg 4145, Level 15, State 1, Line 55
An expression of non-boolean type specified in a context where a condition is expected, near 'AND'.
Thank you !Let me know if it is not clear
I think you want boolean logic. The CASE expression would translate as:
(
(
(pol1.insurancestatus IN (7,14) OR pol1.transactiontype = 'CAN')
AND pol1.veffectivedate = pol1.vexpirydate
) OR (
NOT (pol1.insurancestatus IN (7,14) OR pol1.transactiontype = 'CAN')
AND pol1.veffectivedate <> pol1.vexpirydate
)
)
There are 2 main issues with your snippet, SQL Server-syntax-wise.
SELECT * FROM BLABLABLA WHERE
pol.vnumber = /* PROBLEM 1: we haven't defined pol yet; SQL Server has no idea what pol.vnumber is here, so you're going to get an error when you resolve your boolean issue */
(
SELECT MAX(pol1.vnumber)
FROM p_policy pol1
WHERE sbuid = 4019
AND ( CASE WHEN pol1.insurancestatus IN (7,14)
or pol1.transactiontype IN ('CAN')
THEN CASE
WHEN pol1.veffectivedate = pol1.vexpirydate THEN 1
WHEN pol1.veffectivedate <> pol1.vexpirydate THEN 0
END
END
) /* PROBLEM 2: Your case statement returns a 1 or a 0..
which means your WHERE is saying
WHERE sbuid = 4019
AND (1)
AND pol1.vrecordstatus NOT IN (30,254)
SQL Doesn't like that. I think you meant to add a boolean operation using your 1 or 0 after the parenthesis.
like this: */
= 1
AND pol1.vrecordstatus NOT IN (30,254)
I want to return a boolean according to a condition on one of the column of my table. I tested it in SQL Server 2014 and it works, but I have no experience in Access.
This is the query I have at the moment, using Access 2007.
SELECT (CASE WHEN Type = 'C' THEN 1 ELSE 0 END) AS EstContrat
FROM Historique_EnTete
Type has the Text type.
I have translated the error message to :
"Syntax error (missing operator) in the expression << (CASE WHEN Type = 'C' THEN 1 ELSE 0 END) >>"
What am I missing?
In access you have IIF
SELECT IIF(Type = 'C', 1, 0 ) AS EstContrat
FROM Historique_EnTete
As Lamak say you also have SWITCH
I am new to SQL and using Oracle 11. I need to write a sql script which uses different update command based on whether the input param is null or not null.
I need something like this
['&' followed by the parameter name is the way i see parameters being used in other such
script for our project]
IF &PRG_ID IS NULL
UPDATE PROGRAM_TABLE P SET HANDLED_IND = 'Y' WHERE EXISTS
(SELECT 1 FROM HANDLED_PROGRAM H WHERE H.PROGRAM_ID = P.PROGRAM_ID);
ELSE
UPDATE PROGRAM_TABLE P SET HANDLED_IND = 'Y' WHERE
P.PROGRAM_ID = &PRG_ID AND EXISTS
(SELECT 1 FROM HANDLED_PROGRAM H WHERE H.PROGRAM_ID = P.PROGRAM_ID);
END IF;
Something like (is not tested):
UPDATE PROGRAM_TABLE P SET HANDLED_IND = 'Y' WHERE EXISTS
(SELECT 1 FROM HANDLED_PROGRAM H WHERE H.PROGRAM_ID = P.PROGRAM_ID)
AND (&PRG_ID IS NULL OR P.PROGRAM_ID = &PRG_ID);
But take into account this change may lead to the performance degradation for the case when PRG_ID has definite value.
WHERE CONDITION1='ABC'
AND Status =
CASE #Option
WHEN 1 THEN 'True'
WHEN 2 THEN 'False'
WHEN 3 THEN NULL
WHEn 4 THEN **IN ('True', 'False', NULL)**
END
How do I write a query where my first options match directly using = but my last option needs an IN
The above query gives error, but I want something similar to it, which I am not able to find out.
A CASE statement can't return a set of values... but this query should give you the same results:
WHERE CONDITION1='ABC'
AND Status =
CASE
WHEN 1 THEN 'True'
WHEN 2 THEN 'False'
WHEN 3 THEN NULL
WHEN 4 THEN Status
END
Also, note that unless you have ANSI_NULLS OFF, Status will never = NULL... you would need to use IS NULL for this comparison, and you'd need to forgo the CASE statement altogether.
Skip the CASE statement and use OR. And as per ANSI standard don't compare with NULL:
WHERE CONDITION1='ABC'
AND ((#Option = 1 AND Status = 'True') OR
(#Option = 2 AND Status = 'False') OR
(#Option = 3 AND Status IS NULL) OR
(#Option = 4 AND (Status IS NULL OR Status IN ('True', 'False'))))