Oracle-11g-R2
選擇一張表的計數到另一張表中
我有一個 SQL 語句:
SELECT ARTICLES.NEWS_ARTCL_ID, ARTICLES.NEWS_ARTCL_TTL_DES, ARTICLES.NEWS_ARTCL_CNTNT_T, ARTICLES.NEWS_ARTCL_PUB_DT, ARTICLES.NEWS_ARTCL_AUTH_NM, ARTICLES.NEWS_ARTCL_URL, ARTICLES.MEDIA_URL, ARTICLES.ARTCL_SRC_ID, SOURCES.ARTCL_SRC_NM, MEDIA.MEDIA_TYPE_DESCRIP FROM RSKLMOBILEB2E.NEWS_ARTICLE ARTICLES, RSKLMOBILEB2E.MEDIA_TYPE MEDIA, RSKLMOBILEB2E.ARTICLE_SOURCE SOURCES WHERE ARTICLES.MEDIA_TYPE_IDENTIF = MEDIA.MEDIA_TYPE_IDENTIF AND ARTICLES.ARTCL_SRC_ID = SOURCES.ARTCL_SRC_ID AND ARTICLES.ARTCL_SRC_ID = 1 ORDER BY ARTICLES.NEWS_ARTCL_PUB_DT;
現在我需要將另一個 SQL 語句組合成一個:
SELECT COUNT(*) FROM RSKLMOBILEB2E.NEWS_LIKES LIKES, RSKLMOBILEB2E.NEWS_ARTICLE ARTICLES WHERE LIKES.NEWS_ARTCL_ID = ARTICLES.NEWS_ARTCL_ID;
由於我是 Oracle 的新手,因此不確定如何實現這一點。基本上我有一個包含文章的表,我需要包含另一個表中的使用者喜歡。
非常感謝您對此的任何幫助。
嘗試以下操作:
SELECT ART.NEWS_ARTCL_ID, ART.NEWS_ARTCL_TTL_DES, ART.NEWS_ARTCL_CNTNT_T, ART.NEWS_ARTCL_PUB_DT, ART.NEWS_ARTCL_AUTH_NM, ART.NEWS_ARTCL_URL, ART.MEDIA_URL, ART.ARTCL_SRC_ID, SRC.ARTCL_SRC_NM, MED.MEDIA_TYPE_DESCRIP, LIK.TOTAL FROM RSKLMOBILEB2E.NEWS_ARTICLE ART, RSKLMOBILEB2E.MEDIA_TYPE MED, RSKLMOBILEB2E.ARTICLE_SOURCE SRC, (SELECT AR1.NEWS_ARTCL_ID, COUNT(*) TOTAL FROM RSKLMOBILEB2E.NEWS_ARTICLE AR1, RSKLMOBILEB2E.NEWS_LIKES LK1 WHERE AR1.NEWS_ARTCL_ID = LK1.NEWS_ARTCL_ID) LIK WHERE ART.MEDIA_TYPE_IDENTIF = MED.MEDIA_TYPE_IDENTIF AND ART.ARTCL_SRC_ID = SRC.ARTCL_SRC_ID AND ART.ARTCL_SRC_ID = 1 AND ART.NEWS_ARTCL_ID = LIK.NEWS_ARTCL_ID ORDER BY ART.NEWS_ARTCL_PUB_DT;