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ʹÓÃOracleµÄDBMS_SQL°üÖ´Ðж¯Ì¬SQLÓï¾ä

 ÔÚijЩ³¡ºÏÏ£¬´æ´¢¹ý³Ì»ò´¥·¢Æ÷ÀïµÄSQLÓï¾äÐèÒª¶¯Ì¬Éú³É¡£OracleµÄDBMS_SQL°ü¿ÉÒÔÓÃÀ´Ö´Ðж¯Ì¬SQLÓï¾ä¡£±¾ÎÄͨ¹ýÒ»¸ö¼òµ¥µÄÀý×ÓÀ´Õ¹Ê¾ÈçºÎÀûÓÃDBMS_SQL°üÖ´Ðж¯Ì¬SQLÓï¾ä£º
DECLARE
       v_cursor NUMBER;
       v_stat NUMBER;
       v_row NUMBER;
       v_id NUMBER;
       v_no VARCHAR(100);
       v_date DATE;
       v_sql VARCHAR(200);
       s_id NUMBER;
       s_date DATE;
BEGIN
     s_id := 3000;
     s_date := SYSDATE;
     v_sql := 'SELECT id,qan_no,sample_date from "tblno" WHERE id > :sid and sample_date < :sdate';
     v_cursor := dbms_sql.open_cursor; --´ò¿ªÓαꣻ
     dbms_sql.parse(v_cursor, v_sql, dbms_sql.native); --½âÎö¶¯Ì¬SQLÓï¾ä£»
     dbms_sql.bind_variable(v_cursor, ':sid', s_id); --°ó¶¨ÊäÈë²ÎÊý£»
     dbms_sql.bind_variable(v_cursor, ':sdate', s_date);
    
     dbms_sql.define_column(v_cursor, 1, v_id); --¶¨ÒåÁÐ
     dbms_sql.define_column(v_cursor, 2, v_no, 100);
     dbms_sql.define_column(v_cursor, 3, v_date);
     v_stat := dbms_sql.execute(v_cursor); --Ö´Ðж¯Ì¬SQLÓï¾ä¡£
     LOOP
         EXIT WHEN dbms_sql.fetch_rows(v_cursor)<=0; --fetch_rowsÔÚ½á¹û¼¯ÖÐÒÆ¶¯Óα꣬Èç¹ûδµÖ´ïĩ⣬·µ»Ø1¡£        
         dbms_sql.column_value(v_cursor, 1, v_id); --½«µ±Ç°ÐеIJéѯ½á¹ûдÈëÉÏÃæ¶¨ÒåµÄÁÐÖС£
         dbms_sq


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10. ¾«ÃîSQL語¾ä

         1. ˵Ã÷£º¸´ÖƱí(Ö»¸´Öƽṹ£¬Ô´±íÃû£ºa£¬Ð±íÃû£ºb)
SQL: select * into b from a where 1<>1;
        2. ˵Ã÷£º¿½±´±í(¿½±´Êý¾Ý£¬Ô´±íÃû£ºa£¬Ä¿±ê±íÃû£ºb)
SQL: insert into b(a, b, c) select d, e, f from b;
&nb ......

connect by prior Ò»¸öºÜºÃÓõÄORACLEµÝ¹éÓï¾ä

select t.*, t.rowid from indicators t start with (t.isleaf='1' and t.rid='26020')
connect by prior t.pid = t.id order by t.inum
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select t.*, t.rowid from indicators t start with (t.pid='0' and t.rid='26020')
connect by prior t.id = t.pid order by t.i ......

oracleÊ÷½á¹¹²éѯ

 
connect by Êǽṹ»¯²éѯÖÐÓõ½µÄ£¬Æä»ù±¾Óï·¨ÊÇ£º
select ... from tablename start with Ìõ¼þ1
connect by Ìõ¼þ2
where Ìõ¼þ3;
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select * from table
start with org_id = 'HBHqfWGWPy'
connect by prior org_id = parent_id;
 
¼òµ¥ËµÀ´Êǽ«Ò»¸öÊ÷×´½á¹¹´æ´¢ÔÚÒ»ÕűíÀ±ÈÈçÒ»¸ö±í ......

Sql Server·¢ÓʼþÅäÖÃ

¡¡Ç°Ì᣺°²×°sqlserver£¬°²×°outlook£¬outlookÒѾ­ÕýÈ·ÅäÖá£
    £¨1£©ÅäÖÃsqlserverµÄÆô¶¯Óû§ÎªÓòÓû§¡£sqlserverÆô¶¯Ä¬Èϵı¾µØÕË»§£¬±¾µØÕË»§Æô¶¯µÄ·þÎñÊÇÎÞ·¨Íê³ÉÓʼþµÄ·¢ËͽÓÊܹ¦Äܵġ£
     ÅäÖÃÓòÓû§Æô¶¯£º´ò¿ª¿ØÖÆÃæ°åµÄ--¹ÜÀí¹¤¾ß--·þÎñ£¬ÕÒµ½sqlserver·þÎñ£¬²é¿´ÊôÐÔ¡£Ô ......
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