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Generate title cased fields with JPA/Spring Boot on Postgres


By : Allen Sher
Date : October 16 2020, 06:10 PM
around this issue In PostgreSQL unquoted names are case-insensitive. So Username and username are the same.
If you want to have case-sensitive name you have to put the names in double-quotes.
code :
@Column(name = 'Username', length = 64)


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Spring Boot downgrading postgres version


By : Luke
Date : March 29 2020, 07:55 AM
To fix the issue you can do The behaviour that you have observed is due to the Dependency Management Plugin that Spring Boot's Gradle plugin uses for dependency management. When a dependency is declared in build.gradle with a version, it honours that version and ignores whatever version the configured dependency management may specify.
code :
dependencies {
    compile 'com.google.guava:guava:18.0'
}
ext['postgres.version'] = '42.2.2'

Using Integer Array in postgres with Spring-boot


By : user1950167
Date : March 29 2020, 07:55 AM
may help you . There's an error I can see in the SQL, and probably the wrong choice of API after that. First in the query:
code :
select * from lookup where id && ARRAY[ :ids ]
select * from lookup where id && ?
public static List<Map<String,Object>> fetch(NamedParameterJdbcTemplate jdbcTemplate, List<Integer> idlist){
    List<Map<String,Object>> result= new ArrayList<>();
    String sql = "select * from lookup where id && ?";
    final Integer[] ids = idlist.toArray(new Integer[0]);
    PreparedStatementSetter parameters = new PreparedStatementSetter() {
        @Override
        void setValues(PreparedStatement stmt) {
            Connection conn = stmt.getConnection();
            // this can only be done through the Connection
            java.sql.Array arr = conn.createArrayOf("integer", ids);
            // you can use setObject(1, ids, java.sql.Types.ARRAY) instead of setArray
            // in case the connection wrapper doesn't pass it on to the JDBC driver
            stmt.setArray(1, ids);
        }
    };
    JdbcOperations jdo = jdbcTemplate.getJdbcOperations();
    result= jdo.query(sql,
            parameters,
            new RowMapper<Map<String,Object>>() { ...
            }
    )
}

Unable to generate Swagger UI for Spring Boot + Spring Integration using Spring REST Docs & springfox 3.0.0-SNAPSHOT


By : Eŋgy Tặhặ
Date : March 29 2020, 07:55 AM
To fix this issue Solved this with the help of examples from https://github.com/springfox/springfox-demos/tree/master/springfox-integration-webmvc.

Manage H2 and Postgres in same pom.xml in Spring Boot


By : ocerny
Date : March 29 2020, 07:55 AM
will help you You should be aware that there are multiple class paths, such as:
The compile-time classpath, The runtime classpath, The testing classpath.
code :
spring.datasource.url=jdbc:postgresql://localhost:5432/mydatabase
spring.datasource.url=jdbc:h2:mydatabase

Column does not exist in spring boot Postgres app


By : Noah Clark
Date : March 29 2020, 07:55 AM
may help you . A potential cause of this error is when you haven't defined the hibernate "default schema" property.
I fixed this issue by adding line below to my application.properties:
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