请优化脚本: select fnumber,fname,fspecification from wj_v_icitem_jbxx where FMASTERID<>1476921 and fuseorgid=1 and (substr(fnumber,0,7), fname, fspecification) in(select substr(fnumber,0, 7),fname,fspecification from wj_v_icitem_jbxx where fuseorgid = 1 and FMASTERID =1476921)
时间: 2024-03-17 08:43:56 浏览: 17
可以考虑使用JOIN语句来优化这个查询语句,具体如下:
```
SELECT t1.fnumber, t1.fname, t1.fspecification
FROM wj_v_icitem_jbxx t1
JOIN wj_v_icitem_jbxx t2
ON t1.fuseorgid = t2.fuseorgid
AND t1.fnumber LIKE CONCAT(t2.fnumber,'%')
AND t1.fname = t2.fname
AND t1.fspecification = t2.fspecification
WHERE t1.fuseorgid = 1
AND t1.FMASTERID <> 1476921
AND t2.FMASTERID = 1476921;
```
这个查询语句使用了JOIN语句,将wj_v_icitem_jbxx表分别关联两次,以便比较两个条目是否具有相同的fnumber、fname和fspecification。同时,使用LIKE函数和CONCAT函数来实现在t1表中匹配t2表中的fnumber字段的前7个字符。这个查询语句比原查询语句更加高效,可以加快查询速度。
相关问题
select fnumber,fname,fspecification from wj_v_icitem_jbxx where FMASTERID<>1476921 and fuseorgid=1 and (substr(fnumber,0,7), fname, fspecification) in(select substr(fnumber,0, 7),fname,fspecification from wj_v_icitem_jbxx where fuseorgid = 1 and FMASTERID =1476921)
这个问题是一个 SQL 查询语句,它的作用是查询wj_v_icitem_jbxx表中的fnumber、fname和fspecification字段,但是要求FMASTERID不等于1476921且fuseorgid等于1,并且这些字段的组合必须在另一个子查询中出现过,该子查询查询条件为fuseorgid等于1且FMASTERID等于1476921。简单来说,就是查找和另一个指定条目具有相同fnumber、fname和fspecification的条目。
SELECT m.FNUMBER as id, m.FNAME_L2 as name, d.FNAME_L2 as unit, m.FMODEL as model FROM PONYPUNI3.T_BD_MATERIALPURCHASING mp INNER JOIN PONYPUNI3.T_BD_MATERIAL m ON m.FID = mp.FMATERIALID LEFT OUTER JOIN PONYPUNI3.T_BD_MeasureUnit d on m.fbaseunit=d.fid WHERE mp.FSTATUS = 1 AND m.FSTATUS = 1 AND mp.FORGUNIT=:org AND ( m.FNUMBER LIKE :keyword OR m.FNAME_L2 LIKE :keyword OR m.FMODEL LIKE :keyword ) 怎么用spring jpa实现
要使用Spring JPA实现上述查询,需要进行以下步骤:
1. 创建一个实体类,映射到数据库中的表PONYPUNI3.T_BD_MATERIALPURCHASING。示例代码如下:
```java
@Entity
@Table(name = "PONYPUNI3.T_BD_MATERIALPURCHASING")
public class MaterialPurchasing {
@Id
@Column(name = "FID")
private Long id;
// 添加其他属性对应数据库字段
// 添加对应的getter和setter方法
}
```
2. 创建一个Spring Data JPA的Repository接口,用于对数据库表PONYPUNI3.T_BD_MATERIALPURCHASING进行操作。示例代码如下:
```java
@Repository
public interface MaterialPurchasingRepository extends JpaRepository<MaterialPurchasing, Long> {
@Query("SELECT m.FNUMBER as id, m.FNAME_L2 as name, d.FNAME_L2 as unit, m.FMODEL as model " +
"FROM PONYPUNI3.T_BD_MATERIALPURCHASING mp " +
"INNER JOIN PONYPUNI3.T_BD_MATERIAL m ON m.FID = mp.FMATERIALID " +
"LEFT OUTER JOIN PONYPUNI3.T_BD_MeasureUnit d on m.fbaseunit=d.fid " +
"WHERE mp.FSTATUS = 1 AND m.FSTATUS = 1 AND mp.FORGUNIT = :org " +
"AND (m.FNUMBER LIKE :keyword OR m.FNAME_L2 LIKE :keyword OR m.FMODEL LIKE :keyword)")
List<Object[]> findMaterialInfo(@Param("org") String org, @Param("keyword") String keyword);
}
```
3. 在你的服务类中注入MaterialPurchasingRepository,并调用findMaterialInfo方法进行查询。示例代码如下:
```java
@Service
public class MaterialService {
private final MaterialPurchasingRepository materialPurchasingRepository;
public MaterialService(MaterialPurchasingRepository materialPurchasingRepository) {
this.materialPurchasingRepository = materialPurchasingRepository;
}
public List<Object[]> searchMaterialInfo(String org, String keyword) {
return materialPurchasingRepository.findMaterialInfo(org, keyword);
}
}
```
请确保在Spring Boot项目中已经正确配置了数据库连接和JPA相关的配置。这样就可以使用Spring JPA实现上述查询了。