sql优化

build.gradle

@@ -18,7 +18,7 @@ buildscript {
 }
 
 group 'com.uas.cloud.mall'
-version '0.0.4'
+version '0.0.5'
 
 apply plugin: 'java'
 apply plugin: "com.palantir.docker"

src/main/java/com/uas/cloud/mall/shop/news/data/NewsRepository.java

@@ -22,9 +22,11 @@ public interface NewsRepository extends JpaSpecificationExecutor<News>, JpaRepos
      * @param taskName
      * @return
      */
-    @Query(value = "select c.id from jpress_content c where c.id in (\n" +
-            "\tselect m.content_id from jpress_mapping m where m.taxonomy_id in (\n" +
-            "\t\tselect t.id from jpress_taxonomy t where t.slug= :name ))\n",nativeQuery = true)
+    @Query(value = "select c.id from\n" +
+            "jpress_content c \n" +
+            "join jpress_mapping m on c.id = m.content_id \n" +
+            "join jpress_taxonomy t on m.taxonomy_id = t.id \n" +
+            "where 1=1 and t.slug= :name ",nativeQuery = true)
     @QueryHints({@QueryHint(name = "org.hibernate.cacheable", value ="true")})
     List<Long> findNewsIdByTaxonomySlug (@Param("name")String taskName);
 }