SELECT * FROM tbl_emp WHERE interest = $1 AND emp_id = ANY(?)
Is the above statement correct to be used in function PQprepare?
If yes, what should be the value for nParams and how would PQexecPrepared be called?
Regards,
Mayank
If you're trying to prepare something like = ANY (1, 2, 3), this won't work directly, because 1, 2, 3 is a syntactic construct, and not an expression. (Of course you could do = ANY ($2, $3, $4), but that only works if you know exactly how many values you have.)
But you can do it with arrays. The above is equivalent to = ANY(ARRAY[1, 2, 3]), and so you'd write
SELECT * FROM tbl_emp WHERE interest = $1 AND emp_id = ANY($2)
and the types of the parameters are, say, int and int[].
To call PQexecPrepared, you will need an array as string literal. Something like "{1, 2, 3}" (as a C string) will do. See the documentation for details.
Related
I have a stored procedure as under
ALTER PROCEDURE [dbo].[usp_testProc]
(#Product NVARCHAR(200) = '',
#BOMBucket NVARCHAR(100) = '')
--exec usp_testProc '','1'
AS
BEGIN
SELECT *
FROM Mytbl x
WHERE 1 = 1
AND (#Product IS NULL OR #Product = '' OR x.PRODUCT = #Product)
AND (#BOMBucket IS NULL OR #BOMBucket = '' OR CAST(x.BOMBucket AS NVARCHAR(100)) IN (IIF(#BOMBucket != '12+', #BOMBucket, '13,14')))
END
Everything else if working fine except when I am passing the bucket value as 12+ . It should ideally show the result for bucket 13 and 14. But the result set is blank.
I know IN expects values as ('13','14'). But somehow not able to fit it in the program.
You can express that logic in a Boolean expression.
...
(#BOMBucket <> '12+'
AND cast(x.BOMBucket AS nvarchar(100)) = #BOMBucket
OR #BOMBucket = '12+'
AND cast(x.BOMBucket AS nvarchar(100)) IN ('13', '14'))
...
But casting the column prevents indexes from being used. You rather should cast the other operand. Like in:
x.BOMBucket = cast(#BOMBucket AS integer)
But then you had the problem, that the input must not be a string representing an inter but can be any string. this would cause an error when casting. In newer SQL Server versions you could circumvent that by using try_cast() but not in 2012 as far as I know. Maybe you should rethink your approach overall and pass a table variable with the wanted BOMBucket as integers instead.
I have the following select statement in ABAP:
SELECT munic~mandt VREFER BIS AB ZZELECDATE ZZCERTDATE CONSYEAR ZDIMO ZZONE_M ZZONE_T USAGE_M USAGE_T M2MC M2MT M2RET EXEMPTMCMT EXEMPRET CHARGEMCMT
INTO corresponding fields of table GT_INSTMUNIC_F
FROM ZCI00_INSTMUNIC AS MUNIC
INNER JOIN EVER AS EV on
MUNIC~POD = EV~VREFER(9).
"where EV~BSTATUS = '14' or EV~BSTATUS = '32'.
My problem with the above statement is that does not recognize the substring/offset operation on the 'ON' clause. If i remove the '(9) then
it recognizes the field, otherwise it gives error:
Field ev~refer is unknown. It is neither in one of the specified tables
nor defined by a "DATA" statement. I have also tried doing something similar in the 'Where' clause, receiving a similar error:
LOOP AT gt_instmunic.
clear wa_gt_instmunic_f.
wa_gt_instmunic_f-mandt = gt_instmunic-mandt.
wa_gt_instmunic_f-bis = gt_instmunic-bis.
wa_gt_instmunic_f-ab = gt_instmunic-ab.
wa_gt_instmunic_f-zzelecdate = gt_instmunic-zzelecdate.
wa_gt_instmunic_f-ZZCERTDATE = gt_instmunic-ZZCERTDATE.
wa_gt_instmunic_f-CONSYEAR = gt_instmunic-CONSYEAR.
wa_gt_instmunic_f-ZDIMO = gt_instmunic-ZDIMO.
wa_gt_instmunic_f-ZZONE_M = gt_instmunic-ZZONE_M.
wa_gt_instmunic_f-ZZONE_T = gt_instmunic-ZZONE_T.
wa_gt_instmunic_f-USAGE_M = gt_instmunic-USAGE_M.
wa_gt_instmunic_f-USAGE_T = gt_instmunic-USAGE_T.
temp_pod = gt_instmunic-pod.
SELECT vrefer
FROM ever
INTO wa_gt_instmunic_f-vrefer
WHERE ( vrefer(9) LIKE temp_pod ). " PROBLEM WITH SUBSTRING
"AND ( BSTATUS = '14' OR BSTATUS = '32' ).
ENDSELECT.
WRITE: / sy-dbcnt.
WRITE: / 'wa is: ', wa_gt_instmunic_f.
WRITE: / 'wa-ever is: ', wa_gt_instmunic_f-vrefer.
APPEND wa_gt_instmunic_f TO gt_instmunic_f.
WRITE: / wa_gt_instmunic_f-vrefer.
ENDLOOP.
itab_size = lines( gt_instmunic_f ).
WRITE: / 'Internal table populated with', itab_size, ' lines'.
The basic task i want to implement is to modify a specific field on one table,
pulling values from another. They have a common field ( pod = vrefer(9) ). Thanks in advance for your time.
If you are on a late enough NetWeaver version, it works on 7.51, you can use the OpenSQL function LEFT or SUBSTRING. Your query would look something like:
SELECT munic~mandt VREFER BIS AB ZZELECDATE ZZCERTDATE CONSYEAR ZDIMO ZZONE_M ZZONE_T USAGE_M USAGE_T M2MC M2MT M2RET EXEMPTMCMT EXEMPRET CHARGEMCMT
FROM ZCI00_INSTMUNIC AS MUNIC
INNER JOIN ever AS ev
ON MUNIC~POD EQ LEFT( EV~VREFER, 9 )
INTO corresponding fields of table GT_INSTMUNIC_F.
Note that the INTO clause needs to move to the end of the command as well.
field(9) is a subset operation that is processed by the ABAP environment and can not be translated into a database-level SQL statement (at least not at the moment, but I'd be surprised if it ever will be). Your best bet is either to select the datasets separately and merge them manually (if both are approximately equally large) or pre-select one and use a FAE/IN clause.
They have a common field ( pod = vrefer(9) )
This is a wrong assumption, because they both are not fields, but a field an other thing.
If you really need to do that task through SQL, I'll suggest you to check native SQL sentences like SUBSTRING and check if you can manage to use them within an EXEC_SQL or (better) the CL_SQL* classes.
I have a table customer. Contains cus_info as 'ceg_cus_hongkong_21032015_HHMISS'.
I need only the country name from the following mentioned string that is hongkong. And this will be generic for all data provided in cus_info column.
Please help me out how can it be possible using substr?
select
substr(cus_info,
instr(cus_info ,'_', 1, 2),
(
instr(cus_info ,'_', 1, 3) -- position of 3rd _
-
instr('cus_info ,'_', 1, 2) -- position of 2nd _
)
)
from customer
Here it is my Sql query:
Update Accounting.ACNT.Book
Set [No] = Case When A.IsAccType10 = 1 Then [No] - 5000000000 Else [No] + 4000000000 End,
FullNo = Stuff(Stuff(FullNo, Len(FullNo) - 10, 2, '05'), 1, Len(FullNo) - 12, '????')
From #Temp A,
[Master].dbo.ParentIDMap B
Where A.BookID = Book.ID And
B.AccType = Cast(SubString(Book.OriginalAccNo, 2, 1) as Int) - 100 And
B.BranchID = Book.BranchID
Can I use a select statement instead of '?????' as last parameter of Stuff function?
The query I need to replace with is:
Select ParentFullNo
From [Master].dbo.ParentIDMap A
Where A.BranchID = Book.BranchID
Yes, just put the query in parentheses ().
I have an Alphanumeric column in my db table. For my filter, I was using between to get the result filter value. Everything is okay. But, In some cases it misses some of the data's from filtering. Here are my samples,
Sample data
ACQPO14
002421
ACQPO8
ACQPO14
ACQPO19
DUMMY0001
Sql Query
SELECT po.No,
po.PoS
FROM PoDetails pod
INNER JOIN Pors po ON po.Id=PoD.PoId
WHERE po.No BETWEEN 'ACQPO1' AND 'ACQPO20'
For the above sample. the query returns only ACQPO14 and ACQPO19 NOT ACQPO8.
Any help to this issue will be appreciated.
Thanks
It makes sense as it is just text.
1 comes before 8 so, ordering in text (left to right) the db will disregard the last digit of ACQPO14 to compare it against ACQPO8. So ACQPO1 (4 removed) comes before ACQPO8 and ACQPO2 (0 removed) comes before ACQPO8 as well. So it gets filtered out by the between.
The only way for you to fix this is to parse the column by splitting it. EG: If ACQPO is a fixed-length prefix you can use some DBMS function (you haven't specified any) to trim that part and turn into a numeric format the rest. Then compare/filter by that numeric remainder.
This is how you would do this in Oracle
SELECT po.No, po.PoS
FROM PoDetails pod
INNER JOIN Pors po ON po.Id=PoD.PoId
WHERE SUBSTR(po.No, 1, 5) = 'ACPQO'
AND TO_NUMBER(SUBSTR(po.No, 6, 2)) >= 1
AND TO_NUMBER(SUBSTR(po.No, 6, 2)) <= 20;
First SUBSTR() is used to match the textual part of the value. Then the numeric part of the values is parsed into a number using TO_NUMBER() and made available for numeric comparison between 1 and 20. (Other databases would also have similar functions to do the same.)
If ACQPO is fixed then try below in SQL Server
SELECT po.No, po.PoS
FROM PoDetails pod
INNER JOIN Pors po ON po.Id=PoD.PoId
WHERE left(po.No,5) and
cast(substring(po.No,6,len(po.No)) as int)
BETWEEN cast(substring('ACQPO1',6,len(po.No)) as int) AND cast(substring('ACQPO20',6,len(po.No)) as int)
SELECT substring(data,6,len(data)),* FROM #Temp Where
left(data,5) ='ACQPO' And
cast(substring(data,6,len(data)) as int)
BETWEEN cast(substring('ACQPO1',6,len(data)) as int) AND cast(substring('ACQPO20',6,len(data)) as int)
FOR MYSQL:-
SELECT * FROM my_table WHERE
SUBSTR(seq_num, 1,3) = 'ABC' /* verifying prefix code */
AND
REPLACE(seq_num, 'ABC', '') >= 61440
AND
REPLACE(seq_num, 'ABC', '') <= 61807
OR
SELECT * FROM my_table WHERE
SUBSTR(seq_num, 1,3) = 'ABC' /* verifying prefix code */
AND
substr(seq_num, 4, length(seq_num)) >= 61440
AND
SUBSTR(seq_num, 4, LENGTH(seq_num)) <= 61807
works for (like) :
ABC61447,
ABC61448,
ABC61545,
...,
...,
ABC61807
Just use range 10 to 20 and it works!
SELECT po.No,
po.PoS
FROM PoDetails pod
INNER JOIN Pors po ON po.Id=PoD.PoId
WHERE po.No BETWEEN 'ACQPO10' AND 'ACQPO20'