PostgreSQL的JPA查詢

Question

我有以下查詢，在通過Postgres-運行時有效

select * from my_schema.my_table where (jsonb_1 @> '"789"' or jsonb_2 @> '"789"') and (status != 'BAD_STATUS');

它檢查是否有一個值"789"在jsonb_1 （字符串列表）例如： ["456", "789"]或"789"中jsonb_2 （字符串列表）例如： ["123", "456"]且狀態不是BAD_STATUS 。 我試圖在Spring Data JPA（版本1.5.6.RELEASE）中表示相同的查詢，並嘗試了以下兩個但得到異常的方法。

查詢1：

@Query(value = "select * from my_schema.my_table where (jsonb_1 @> :jsonbValue or jsonb_2 @> :jsonbValue) and (status != :badStatus)", nativeQuery = true)
List<MyEntity> findAllByJsonbValueAndStatusNot(@Param("jsonbValue") String jsonbValue, @Param("badStatus") String badStatus);

例外：

2018-10-12 07:41:18,750 DEBUG http-nio-9030-exec-1 - [correlationId:, errorCode:] - org.hibernate.engine.jdbc.spi.SqlExceptionHelper.logExceptions.122 - could not extract ResultSet [n/a]
org.postgresql.util.PSQLException: ERROR: operator does not exist: jsonb @> character varying
  Hint: No operator matches the given name and argument type(s). You might need to add explicit type casts.
  Position: 60
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2455)
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2155)
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:288)
    at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:430)
    at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:356)
    at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:168)
    at org.postgresql.jdbc.PgPreparedStatement.executeQuery(PgPreparedStatement.java:116)
    at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeQuery(ProxyPreparedStatement.java:52)
    at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeQuery(HikariProxyPreparedStatement.java)
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:70)
    at org.hibernate.loader.Loader.getResultSet(Loader.java:2117)
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1900)
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1876)
    at org.hibernate.loader.Loader.doQuery(Loader.java:919)[...]

QUERY2：

@Query(value = "select * from my_schema.my_table where (jsonb_1 @> ?1 or jsonb_2 @> ?1) and (status != ?2)", nativeQuery = true)
List<MyEntity> findAllByJsonbValueAndStatusNot(String jsonbValue, String badStatus);

例外：

2018-10-12 07:29:41,126 ERROR http-nio-9030-exec-1 - [correlationId:, errorCode:] - com.my.services.common.exception.ExceptionHandler.handleAppErrors.39 - Internal server error occurred
org.springframework.dao.InvalidDataAccessApiUsageException: Name for parameter binding must not be null or empty! On JDKs < 8, you need to use @Param for named parameters, on JDK 8 or better, be sure to compile with -parameters.; nested exception is java.lang.IllegalArgumentException: Name for parameter binding must not be null or empty! On JDKs < 8, you need to use @Param for named parameters, on JDK 8 or better, be sure to compile with -parameters.
at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:384)
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:246)

Caused by: java.lang.IllegalArgumentException: Name for parameter binding must not be null or empty! On JDKs < 8, you need to use @Param for named parameters, on JDK 8 or better, be sure to compile with -parameters.
at org.springframework.util.Assert.hasText(Assert.java:181)
at [...]`

Answer 1

就是說您不能使用運算符@>比較字符串和jsonb（它們必須是數據庫中的列類型之一）。 您必須將字符串轉換為jsonb或將jsonb轉換為字符串以進行比較。

類型轉換的Postgres文件

您可以使用LIKE運算符來比較LIKE轉換字符串上的字符串：

WHERE jsonb::varchar LIKE 'jsonbValue'

像運算符

或在jsonb上使用@>運算符：

WHERE jsonb @> :jsonbValue::jsonb

Postgres中的JSONb函數

編輯：

對於第二個查詢，您使用的命名參數在命名查詢中不存在。 用:jsonbValue替換?1或刪除@Param批注。

Answer 2

似乎是一個類型轉換問題。 嘗試這個

@Query(value = "select * from my_schema.my_table where (jsonb_1 @> :jsonbValue\:\:jsonb or jsonb_2 @> :jsonbValue\:\:jsonb) and (status != :badStatus)", nativeQuery = true)

或其他語法

@Query(value = "select * from my_schema.my_table where (jsonb_1 @> cast(:jsonbValue as jsonb) or jsonb_2 @> cast(:jsonbValue as jsonb)) and (status != :badStatus)", nativeQuery = true)