如何从spring-boot执行postgres sql块

Question

I have to execute a block of sql script (typically a function) from spring boot application. I can't keep this function inside my postgres database as i want to maintain at application level. I tried to use schema.sql (from resources folder) and this looks like executing during server startup only.

However i want to call this plsql block everytime when needed through JPA or JDBCTemplate.

Any alternative other than schema.sql which can execute on-demand?

Answer 1

In unit tests there is @Sql annotation, that you can use to execute a script:

@RunWith(SpringRunner.class)
@SpringBootTest
@Sql("/reset_sequences.sql")
public class ModuleTemplateRepositoryTests { ... }

For launching custom sql script from spring application we were using ScriptUtils (stackoverflow here )

@Value("classpath:reset_sequences.sql")
Resource script;

@Autowired
JdbcTemplate jdbcTemplate;

...
ScriptUtils.executeSqlScript(
    jdbcTemplate.getDataSource().getConnection(), script);

Answer 2

如果您将函数存储在数据库中，则可以在此处查看此示例。