mysql中的查询到jooq

Question

你好，我正在努力重写这是jooq，有人能帮我吗？

SELECT t.id,
         t.count,
         @running_total := @running_total + t.count AS cumulative_sum
    FROM TABLE t
    JOIN (SELECT @running_total := 0) r
ORDER BY t.id

Answer 1

jOOQ目前还不支持这种特定于MySQL的现成语法，但是您可以通过plain SQL templating API轻松解决缺少的任何jOOQ特性

// Assuming you're using the code generator
MyTable t = MY_TABLE.as("t");

DSL.using(configuration)
   .select(
       t.ID, 
       t.COUNT,
       field("@running_total := @running_total + {0}", t.COUNT).as("cumulative_sum"))
   .from(t)
   .crossJoin(select(field("@running_total := 0")))
   .orderBy(t.ID)
   .fetch();