兩種oracle批量插入的例項。

oracle自增主鍵批量插入會出現錯誤。不使用自增主鍵是不會報錯的。

Java 程式 呼叫批量插入的方法：

 List<CategoryExpertGrade> categoryExpertGrades=new ArrayList<CategoryExpertGrade>();
       CategoryExpertGrade c1=new CategoryExpertGrade();
       CategoryExpertGrade c2=new CategoryExpertGrade();
       c1.setGrade("C");
       c2.setGrade("D");
       c1.setExpertFk(124L);
       c2.setExpertFk(124L);
       c1.setCategoryFk(4171L);
       c2.setCategoryFk(4172L);
       categoryExpertGrades.add(c1);
       categoryExpertGrades.add(c2);
       int i=categoryExpertGradeMapper.insertList(categoryExpertGrades);
 

第一種：

mybatis  sql語句：

  <insert id="insertList"  >
    insert    into CATEGORY_EXPERT_GRADE (PK, CATEGORY_FK, EXPERT_FK,
    GRADE, SAVE_DATE, FLAG,
    EXTEND1, EXTEND2, EXTEND3
    )
    <foreach collection="recordList"  item="i"  close=" " open=" " separator=" union all ">
    select  Sequence_Shzj.nextval ,
      '${i.categoryFk}' , '${i.expertFk}' ,
      '${i.grade}' , '${i.saveDate}' , '${i.flag}' ,
      '${i.extend1}' , '${i.extend2}' , '${i.extend3}'  from dual
    </foreach>
  </insert>
 

出錯結果：

### SQL: insert    into CATEGORY_EXPERT_GRADE (PK, CATEGORY_FK, EXPERT_FK,     GRADE, SAVE_DATE, FLAG,     EXTEND1, EXTEND2, EXTEND3     )        
select  Sequence_Shzj.nextval ,       '4171' , '124' ,       'C' , '' , '' ,       '' , '' , ''  from dual         
union all       
select  Sequence_Shzj.nextval ,       '4172' , '124' ,       'D' , '' , '' ,       '' , '' , ''  from dual  
e: java.sql.SQLException: ORA-02287: 此處不允許序號  
 

第二種：

mybatis sql語句

<insert id="insertList"  >
    insert ALL
    <foreach collection="recordList"  item="i"  close=" " open=" " separator=" ">
    into CATEGORY_EXPERT_GRADE (PK, CATEGORY_FK, EXPERT_FK,
    GRADE, SAVE_DATE, FLAG,
    EXTEND1, EXTEND2, EXTEND3
    )
    values (Sequence_Shzj.nextval, #{i.categoryFk,jdbcType=DECIMAL}, #{i.expertFk,jdbcType=DECIMAL},
    #{i.grade,jdbcType=VARCHAR}, #{i.saveDate,jdbcType=DATE}, #{i.flag,jdbcType=DECIMAL},
    #{i.extend1,jdbcType=VARCHAR}, #{i.extend2,jdbcType=VARCHAR}, #{i.extend3,jdbcType=VARCHAR}
    )
    </foreach>
    SELECT 1 FROM DUAL
  </insert>

錯誤結果：

### SQL: insert ALL              
into CATEGORY_EXPERT_GRADE (PK, CATEGORY_FK, EXPERT_FK,     GRADE, SAVE_DATE, FLAG,     EXTEND1, EXTEND2, EXTEND3     )     values (Sequence_Shzj.nextval, ?, ?,     ?, ?, ?,     ?, ?, ?     )      
into CATEGORY_EXPERT_GRADE (PK, CATEGORY_FK, EXPERT_FK,     GRADE, SAVE_DATE, FLAG,     EXTEND1, EXTEND2, EXTEND3     )     values (Sequence_Shzj.nextval, ?, ?,     ?, ?, ?,     ?, ?, ?     )             
SELECT 1 FROM DUAL
### Cause: java.sql.SQLException: ORA-00001: 違反唯一約束條件 (XIAOMI.PK_CATEGORY_EXPERT_GRADE), PK 的值是相同的。

上面的兩種批量插入的方式都不能使用序列。

解決辦法：

寫一個函式包裝一下序列：

create or replace function get_seq return number is
  Result number;
begin
  select Sequence_Shzj.nextval into Result from dual;
  return(Result);
end get_seq;

sql語句中的Sequence_Shzj.nextval都替換成get_seq;