jooq

问题 I have three tables: Users Keys UserKeys The UserKeys table has both primary keys from Users and Keys tables to establish the relation between users and keys. How to fetch a User with all it's related keys? What if additional tables exist (for instance UserRoles ), etc. In general, how to fetch a user and all associated rows, related via foreign keys tables? 回答1: Using standard SQL JOIN I'm assuming you're using jOOQ's code generator. You write a join just like you would write a join in SQL:

问题 I have three tables: Users Keys UserKeys The UserKeys table has both primary keys from Users and Keys tables to establish the relation between users and keys. How to fetch a User with all it's related keys? What if additional tables exist (for instance UserRoles ), etc. In general, how to fetch a user and all associated rows, related via foreign keys tables? 回答1: Using standard SQL JOIN I'm assuming you're using jOOQ's code generator. You write a join just like you would write a join in SQL:

问题 I don't have jOOQ generated classes, so, I want to use my class and write it to vertica. Table<Record> table = DSL.table(DATA_TABLE_NAME); for (Data d : data) { dsl.insertInto(table, Arrays.asList( DSL.field(name("uuid"), SQLDataType.UUID) )) .values( d.getUuid(), ).execute(); } In PostgreSql it works, but in Vertica it generate this exception [Vertica][VJDBC](2631) ERROR: Column "uuid" is of type uuid but expression is of type varchar How can I write uuid tu Vertica without generated class?

问题 I've got dsl with POSTGRES_9_4 dialect. I try to use custom selection query with org.jooq.impl.DSL.Condition : dsl.selectFrom(TAG_JSON).where(condition("translations ??| array[?]", normValues)).fetch(mapper); It throws an exception: org.jooq.exception.SQLDialectNotSupportedException: Type class java.util.ArrayList is not supported in dialect DEFAULT at org.jooq.impl.DefaultDataType.getDataType(DefaultDataType.java:757) at org.jooq.impl.DefaultDataType.getDataType(DefaultDataType.java:704) at

问题 How to create a database trigger that log a row change to another table in H2? In MySQL, this can be done easily: CREATE TRIGGER `trigger` BEFORE UPDATE ON `table` FOR EACH ROW BEGIN INSERT INTO `log` ( `field1` `field2`, ... ) VALUES ( NEW.`field1`, NEW.`field2`, ... ) ; END; 回答1: Declare this trigger: CREATE TRIGGER my_trigger BEFORE UPDATE ON my_table FOR EACH ROW CALL "com.example.MyTrigger" Implementing the trigger with Java/JDBC: public class MyTrigger implements Trigger { @Override

问题 Giving the last example given in this SO thread. I get this error: java.lang.ClassCastException: class java.util.LinkedHashMap cannot be cast to class com.example.dtos.UserElement (java.util.LinkedHashMap is in module java.base of loader 'bootstrap'; com.example.dtos.UserElement is in unnamed module of loader 'app') Am I supposed to use a special mapper that jooq will be happy with? Any help is welcome Edit: Jooq version: 3.14.3 Postgres: 11 ctx.select( USERS.ID.`as`("id"), USERS.USERNAME.`as

问题 We have a table design where a lot of tables share some columns, e.g. in one case some of our tables have the column markedForDeletion . In another case, multiple of our tables have the columns approvedAt and approvedBy . These tables don't share anything in terms of to be JOINED data and thus, I don't like to introduce a common JOIN table for those (It's also not an option due to performance issues). But from application perspective, I do have quite similar tasks to be performed, here. For

问题 Given a system using Kotlin version 1.3.61 and JOOQ version 3.13.1, a method like this builds an union query normally: val selectCommonPart = coalesce(sum(field(name("amount"), Long::class.java)), ZERO) .`as`(field(name("totalAmount"))) var whereCommonPart: Condition = trueCondition().and(field(name("Id")).eq(Id)) // Id comes as a parameter var query = dsl.selectQuery() query.addSelect(selectCommonPart) query.addFrom(table("${tableName(startDate)}")) // `startDate` is a `LocalDate`,

问题 I want to bring a postgres database table in sync with a list of Jooq Records. I have a table with a composite primary key and three other values in each row table(k1, k2, v1, v2, v3) For example, the data might be Last, First, Age, Weight, Height Smith, Joe, 21, 75, 160 Jones, Pete, 23, 80, 180 (excuse the poor form of using names as primary keys....) I also have a list of Jooq Records for that table in my java code. Let's say that there's two java records [ <Smith, Joe, 21, 75, 180>,

问题 Assume the following function declaration: FUNCTION ARTTEXTJN (p_art_id in number ,p_arttextart in varchar2 default 'basis' ,p_sprache in varchar2 default null ,p_aufart in number default null ,p_fallback_arttextart in varchar2 default 'J' ) RETURN VARCHAR2 Expect the first parameter all parameter have a default value. jOOQ generate a package method like this: public static Field<String> arttextjn(Field<? extends Number> pArtId, Field<String> pArttextart, Field<String> pSprache, Field<?