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This article mainly explains "the example usage of sql conditional query sentence". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn the example usage of sql conditional query sentence.

The copy code is as follows:

/ / create the transcript create table result (stu_id varchar2 (20) not null, china number (9Power2) null, math number (9L2) null, english number (9L2) null); / / insert the data insert into result values ('0001Jing 60, 20); insert into result values (' 0002, 80); insert into result values ('0003, 20,085); select * from result / / conditional query select stu_id, (case when china > 80 then 'excellent' when china > = 60 then 'pass' when china80 then 'excellent' when math > = 60 then 'pass' when math80 then 'excellent' when english > = 60 then 'pass' when english

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