排序案例陈述的小节

Question

所以我有一个具有以下排序顺序的查询：

String sortOrder = "CASE " + ICCGoal.COLUMNS.category
        + " WHEN '" + GoalCategory.PHYSICAL_ACTIVITY.getEncodedValue() + "' THEN 1"
        + " WHEN '" + GoalCategory.SLEEP.getEncodedValue() + "' THEN 2"
        + " WHEN '" + GoalCategory.SOCIAL.getEncodedValue() + "' THEN 3"
        + " WHEN '" + GoalCategory.MOOD.getEncodedValue() + "' THEN 4"
        + " WHEN '" + GoalCategory.ENERGY.getEncodedValue() + "' THEN 5"
        + " END";

是否可以订购 returned 值的部分？

目前，我有 "SLEEP" 类型 return 的所有目标，在 "PHYSICAL_ACTIVITY" 之后和 "SOCIAL" 目标之前，无论它们的存储顺序如何。

是否可以 return 它们按创建日期排序？或者只是以不同于默认方式的其他方式订购？

Answer 1

只需添加一个次要排序标准：

String sortOrder = "CASE " + ICCGoal.COLUMNS.category
        + " WHEN '" + GoalCategory.PHYSICAL_ACTIVITY.getEncodedValue() + "' THEN 1"
        + " WHEN '" + GoalCategory.SLEEP.getEncodedValue() + "' THEN 2"
        + " WHEN '" + GoalCategory.SOCIAL.getEncodedValue() + "' THEN 3"
        + " WHEN '" + GoalCategory.MOOD.getEncodedValue() + "' THEN 4"
        + " WHEN '" + GoalCategory.ENERGY.getEncodedValue() + "' THEN 5"
        + " END" // Original ordering from the OP
        + ", date_created"; // Secondary term

排序案例陈述的小节

Ordering subsections of case statement

sql

sqlite

select

sql-order-by