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[英]How to get SQL Server XQUERY to return something other than “There is no element named [Element]”
[英]How to make a wrapper to return something other than ref cursor
我有以下PL SQL函数返回引用游标但我正在使用的应用程序不支持ref游标。 如何让这段代码返回除ref游标之外的其他东西
FUNCTION getADedIcWarningsProv(p_hos_id IN work_entity_data.hos_id%TYPE
,p_date IN DATE
)
RETURN eOdatatypes_package.eOrefcur
IS
v_refcur eOdatatypes_package.eOrefcur;
BEGIN
OPEN v_refcur FOR
SELECT IF_type IF_type
,COUNT(*) number_infected
FROM (SELECT DISTINCT bd.PT_id PT_id
,CASE WHEN NVL(O_package.get_O_code_property(pw.warning_code,'Setl'),'N') = 'Y'
THEN cd.description
ELSE 'Other'
END IF_type
FROM PT_ad pad
,BD_details bd
,PT_warnings pw
,codes cd
WHERE bd.current_record = 'Y'
AND bd.BD_location IS NOT NULL
AND bd.BD_status IN (SELECT code
FROM codes
WHERE prog_code IN (1, 1, 2)
AND code_type = 4)
AND bd.AD_no = pad.AD_no
AND pad.hos_id = p_hos_id
AND pw.PT_id = bd.PT_id
AND pw.warning_to IN ('D','Q')
AND p_date BETWEEN pw.applies_start
AND NVL(pw.applies_end,p_date)
AND NVL(O_package.get_O_code_property(pw.warning_code,'INFT'),'Y') = 'N'
AND pw.warning_code = cd.code)
GROUP BY IF_type
ORDER BY IF_type;
RETURN v_refcur;
END getADedIcWarningsProv;
OUTPUT:
IF_TYPE NUMBER_IF
---------------------------------------- ---------------
C 2
M 6
Other 4
3 rows selected
您可以使用管道函数一次返回一个结果集,但SQL引擎可以理解。
create or replace package WrapperSample is
type TResultRow is record(
if_type codes.cd%type
,number_infected Integer);
type TResultRowList is table of TResultRow;
function GetADedIcWarningsProv
(
p_hos_id in work_entity_data.hos_id%type
,p_date in date
) return TResultRowList
pipelined;
end WrapperSample;
/
create or replace package body WrapperSample is
function GetADedIcWarningsProv
(
p_hos_id in work_entity_data.hos_id%type
,p_date in date
) return TResultRowList
pipelined is
v_refcur eOdatatypes_package.eOrefcur;
currentRow TResultRow;
begin
v_refcur := YourSchema.getADedIcWarningsProv(p_hos_id, p_date);
loop
fetch v_refcur
INTO currentRow;
exit when v_refcur%NotFound;
pipe row(currentRow);
end loop;
close v_refcur;
return;
end;
end WrapperSample;
/
使用此包,您可以选择您的引用游标:
SELECT if_type
,number_infected
FROM table(WrapperSample.getADedIcWarningsProv(1, 2))
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