ओरेकल subquery

Question

के साथ चयन करें क्या आप अगली ऑरैकल एसक्यूएल क्वेरी के साथ मेरी मदद कर सकते हैं।

SELECT "NEWS"."NEWSID" as ID, 
     "NEWS"."SLUG", 
     "NEWS_TRANSLATION".*, 
     (SELECT FILENAME FROM NEWS_MEDIA WHERE NEWSID = ID AND rownum <= 1 ORDER BY POSITION ASC) as FILENAME 
FROM "NEWS" 
INNER JOIN "NEWS_TRANSLATION" ON NEWS.NEWSID = NEWS_TRANSLATION.NEWSID 
WHERE (NEWS.PUBLISH = 1) AND (NEWS_TRANSLATION.LANG = :lang) 
ORDER BY "NEWS"."NEWSID" DESC; 

जब मैं इस क्वेरी निष्पादित मैं त्रुटि

ORA-00907: missing right parenthesis 
00907. 00000 - "missing right parenthesis" 
*Cause:  
*Action: 
Error at Line: 4 Column: 74 

Answer 1

इस प्रयास करें: जब आप उपयोग कर रहे हैं कर रहे हैं

SELECT "NEWS"."NEWSID" as ID, 
    "NEWS"."SLUG", 
    "NEWS_TRANSLATION".*, 
    (SELECT * FROM (SELECT FILENAME FROM NEWS_MEDIA WHERE NEWSID = ID ORDER BY POSITION ASC) WHERE rownum = 1) as FILENAME 
FROM "NEWS" 
INNER JOIN "NEWS_TRANSLATION" ON NEWS.NEWSID = NEWS_TRANSLATION.NEWSID 
WHERE (NEWS.PUBLISH = 1) AND (NEWS_TRANSLATION.LANG = :lang) 
ORDER BY "NEWS"."NEWSID" DESC; 

"आदेश से" और " राउनम "एक साथ, आपको पहले उन्हें ऑर्डर करने और पहले रिकॉर्ड की तलाश करने की आवश्यकता है।

Answer 2

उप क्वेरी में खंड द्वारा आदेश निकाल कर प्रयास करें।

Answer 3

यहाँ कोड काम कर रहा है:

SELECT "NEWS"."NEWSID" as ID, 
    "NEWS"."SLUG", 
    "NEWS_TRANSLATION".*, 
    (SELECT FILENAME FROM NEWS_MEDIA WHERE NEWSID = ID AND rownum <= 1) as FILENAME 
FROM "NEWS" 
INNER JOIN "NEWS_TRANSLATION" ON NEWS.NEWSID = NEWS_TRANSLATION.NEWSID 
WHERE (NEWS.PUBLISH = 1) AND (NEWS_TRANSLATION.LANG = :lang) 
ORDER BY "NEWS"."NEWSID" DESC 

Answer 4

प्रयास करें यह:

SELECT "NEWS"."NEWSID" AS ID, "NEWS"."SLUG", "NEWS_TRANSLATION".*, 
     (SELECT FILENAME 
      FROM NEWS_MEDIA 
     WHERE NEWSID = "NEWS"."NEWSID" AND ROWNUM <= 1) 
      AS FILENAME 
    FROM  "NEWS" 
     INNER JOIN 
      "NEWS_TRANSLATION" 
     ON NEWS.NEWSID = NEWS_TRANSLATION.NEWSID 
WHERE (NEWS.PUBLISH = 1) AND (NEWS_TRANSLATION.LANG = :LANG) 
ORDER BY "NEWS"."NEWSID" DESC 

Answer 5

SELECT STUDENT_NAME, STUDENT_ALIAS_NAME 
FROM school 
WHERE STUDENT_NAME IN (
     SELECT STUDENT_NAME 
     FROM school 
     WHERE STUDENT_DEPARMENT= 0 
     );