首先介绍Oracle 9i新增加的一个系统自带的排序函数 1、按首字母排序 在oracle9i中新增了按照拼音、部首、笔画排序功能。设置NLS_SORT值 SCHINESE_RADICAL_M 按照部首(第一顺序)、笔划(第二顺序)排序 SCHINESE_STROKE_M 按照笔划(第一顺序)、部首(第二顺序)排序 SCHINESE_PINYIN_M 按照拼音排序 oracle9i中新增了按照拼音、部首、笔画排序功能 用法示例: - 拼音
SELECT * FROM TEAM ORDER BY NLSSORT(排序字段,'NLS_SORT = SCHINESE_PINYIN_M') 笔划 SELECT * FROM TEAM ORDER BY NLSSORT(排序字段,'NLS_SORT = SCHINESE_STROKE_M') 部首 SELECT * FROM TEAM ORDER BY NLSSORT(排序字段,'NLS_SORT = SCHINESE_RADICAL_M')
2、按首字母拼音查询 首先我们要创建一个可以查询汉字首字母的函数,函数代码如下: - CREATE OR REPLACE FUNCTION F_TRANS_PINYIN_CAPITAL(P_NAME IN VARCHAR2) RETURN VARCHAR2 AS
V_COMPARE VARCHAR2(100); V_RETURN VARCHAR2(4000); FUNCTION F_NLSSORT(P_WORD IN VARCHAR2) RETURN VARCHAR2 AS BEGIN RETURN NLSSORT(P_WORD, 'NLS_SORT=SCHINESE_PINYIN_M'); END; BEGIN FOR I IN 1..LENGTH(P_NAME) LOOP V_COMPARE := F_NLSSORT(SUBSTR(P_NAME, I, 1)); IF V_COMPARE >= F_NLSSORT(' 吖 ') AND V_COMPARE <= F_NLSSORT('驁 ') THEN V_RETURN := V_RETURN || 'a'; ELSIF V_COMPARE >= F_NLSSORT('八 ') AND V_COMPARE <= F_NLSSORT('簿 ') THEN V_RETURN := V_RETURN || 'b'; ELSIF V_COMPARE >= F_NLSSORT('嚓 ') AND V_COMPARE <= F_NLSSORT('錯 ') THEN V_RETURN := V_RETURN || 'c'; ELSIF V_COMPARE >= F_NLSSORT('咑 ') AND V_COMPARE <= F_NLSSORT('鵽 ') THEN V_RETURN := V_RETURN || 'd'; ELSIF V_COMPARE >= F_NLSSORT('妸 ') AND V_COMPARE <= F_NLSSORT('樲 ') THEN V_RETURN := V_RETURN || 'e'; ELSIF V_COMPARE >= F_NLSSORT('发 ') AND V_COMPARE <= F_NLSSORT('猤 ') THEN V_RETURN := V_RETURN || 'f'; ELSIF V_COMPARE >= F_NLSSORT('旮 ') AND V_COMPARE <= F_NLSSORT('腂 ') THEN V_RETURN := V_RETURN || 'g'; ELSIF V_COMPARE >= F_NLSSORT('妎 ') AND V_COMPARE <= F_NLSSORT('夻 ') THEN V_RETURN := V_RETURN || 'h'; ELSIF V_COMPARE >= F_NLSSORT('丌 ') AND V_COMPARE <= F_NLSSORT('攈 ') THEN V_RETURN := V_RETURN || 'j'; ELSIF V_COMPARE >= F_NLSSORT('咔 ') AND V_COMPARE <= F_NLSSORT('穒 ') THEN V_RETURN := V_RETURN || 'k'; ELSIF V_COMPARE >= F_NLSSORT('垃 ') AND V_COMPARE <= F_NLSSORT('擽 ') THEN V_RETURN := V_RETURN || 'l'; ELSIF V_COMPARE >= F_NLSSORT('嘸 ') AND V_COMPARE <= F_NLSSORT('椧 ') THEN V_RETURN := V_RETURN || 'm'; ELSIF V_COMPARE >= F_NLSSORT('拏 ') AND V_COMPARE <= F_NLSSORT('瘧 ') THEN V_RETURN := V_RETURN || 'n'; ELSIF V_COMPARE >= F_NLSSORT('筽 ') AND V_COMPARE <= F_NLSSORT('漚 ') THEN V_RETURN := V_RETURN || 'o'; ELSIF V_COMPARE >= F_NLSSORT('妑 ') AND V_COMPARE <= F_NLSSORT('曝 ') THEN V_RETURN := V_RETURN || 'p'; ELSIF V_COMPARE >= F_NLSSORT('七 ') AND V_COMPARE <= F_NLSSORT('裠 ') THEN V_RETURN := V_RETURN || 'q'; ELSIF V_COMPARE >= F_NLSSORT('亽 ') AND V_COMPARE <= F_NLSSORT('鶸 ') THEN V_RETURN := V_RETURN || 'r'; ELSIF V_COMPARE >= F_NLSSORT('仨 ') AND V_COMPARE <= F_NLSSORT('蜶 ') THEN V_RETURN := V_RETURN || 's'; ELSIF V_COMPARE >= F_NLSSORT('侤 ') AND V_COMPARE <= F_NLSSORT('籜 ') THEN V_RETURN := V_RETURN || 't'; ELSIF V_COMPARE >= F_NLSSORT('屲 ') AND V_COMPARE <= F_NLSSORT('鶩 ') THEN V_RETURN := V_RETURN || 'w'; ELSIF V_COMPARE >= F_NLSSORT('夕 ') AND V_COMPARE <= F_NLSSORT('鑂 ') THEN V_RETURN := V_RETURN || 'x'; ELSIF V_COMPARE >= F_NLSSORT('丫 ') AND V_COMPARE <= F_NLSSORT('韻 ') THEN V_RETURN := V_RETURN || 'y'; ELSIF V_COMPARE >= F_NLSSORT('帀 ') AND V_COMPARE <= F_NLSSORT('咗 ') THEN V_RETURN := V_RETURN || 'z'; END IF; END LOOP; RETURN V_RETURN; END;
随后,我们可以先取出姓名,然后截取第一个汉字,最后取汉字的首字母,即可用来作为查询条件 - select e.fullname,e.expert_id from expert e where f_trans_pinyin_capital(substr(e.fullname,1,1)) = 'z'
最后展示一个将两个结合起来运用的例子: - select e.expert_id,e.eperson_id,e.fullname,
sum(b2i.browse_num) browsecount, count(o.object_id),wmsys.wm_concat(distinct d.name) from expert e left join expert2disciplinetype e2d on e2d.expert_id = e.expert_id left join disciplinetype d on d.discipline_type_id = e2d.discipline_type_id and d.upid = '0' left join community2expert c2e on c2e.expert_id = e.expert_id left join item i on i.item_type_id = 'AcademicRes' and i.withdrawn = 'N' join metadatavalue m on m.item_id = i.item_id and m.metadata_field_id = '64' join objectpublishinfo o on o.object_id = i.item_id and o.object_type = 'item' and o.viewobjecttype = 'eperson' and o.viewobjectid = e.eperson_id and o.state = '1' and o.publishstate_id = '3' left join browse2item b2i on b2i.item_id = o.object_id where e.state = '1' and f_trans_pinyin_capital(substr(e.fullname,1,1)) = 'z' group by e.expert_id,e.eperson_id,e.fullname order by nlssort(e.fullname,'NLS_SORT=SCHINESE_PINYIN_M')
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