这是我的代码: select case when grades.grade >= 8 then students.name end, where students.name is not null
order by grades.grade desc, students.name; 我要做的是隐藏所有students.name = NULL<
我受够了这个:SELECT * FROM my_table WHERE some_column IN(2, 3, 5, null)SELECT * FROM my_tableWHERE some_column IN('wert','qw3e','dfg',null)SELECT * FROM my_t
我正在编写一个时钟程序,但我在查询时遇到了问题: INSERT INTO users(time_in) VALUES($2) WHERE username = $1 表: CREATE TABLE users(username VARCHAR(50) NOT NULL,emailVARCHAR(255) NOT NULL,
time_js