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----行列互換select t.* from temp_sc t;select sc.stdname, a.grade 語(yǔ)文, b.grade 數(shù)學(xué), c.grade 物理, d.grade 化學(xué)  from (select distinct stdname from temp_sc) sc,       (select stdname, grade from temp_sc where stdsubject = '語(yǔ)文') a,       (select stdname, grade from temp_sc where stdsubject = '數(shù)學(xué)') b,       (select stdname, grade from temp_sc where stdsubject = '物理') c,       (select stdname, grade from temp_sc where stdsubject = '化學(xué)') d where sc.stdname = a.stdname   and sc.stdname = b.stdname   and sc.stdname = c.stdname   and sc.stdname = d.stdname;

Java代碼

1. --從哪條開(kāi)始 start with   
2. --連表?xiàng)l件 connect by   
3. --往上還是往下 prior   
4. --從哪條開(kāi)始 start with   
5. --連表?xiàng)l件 connect by   
6. --往上還是往下 prior   
7. select *   
8. from tbl_tree   
9. start with uuid = 1  
10. connect by prior uuid = puuid   
11. order by puuid  

--從哪條開(kāi)始 start with--連表?xiàng)l件 connect by--往上還是往下 prior--從哪條開(kāi)始 start with--連表?xiàng)l件 connect by--往上還是往下 priorselect *from tbl_treestart with uuid = 1connect by prior uuid = puuidorder by puuid