使用Select Query的Jooq AddCondition方法

Question

Here is my problem I am trying to add a Select query in where condition how can i achieve this in Jooq?

selectQuery.addFrom(DefaultInfo.DEFAULT_INFO);
selectQuery.addConditions(DefaultInfo.DEFAULT_INFO.FOLDER_TYPE=+"(Select FolderType From Folder Where Folder.FolderRSN = folderRSN )" );

I know this is wrong but how to add a Select Query output in another query where condition?

Answer 1

Use the Field.in(Select<? extends Record1<T>>) method on your column. For example:

DEFAULT_INFO.FOLDER_TYPE.in(
    select(FOLDER.FOLDER_TYPE)
   .from(FOLDER)
   .where(FOLDER.FOLDER_RSN.eq("folderRSN"))
)

The IN predicate is documented in the manual, here:

• http://www.jooq.org/doc/latest/manual/sql-building/conditional-expressions/in-predicate/
• http://www.jooq.org/doc/latest/manual/sql-building/conditional-expressions/in-predicate-degree-n/