A.*
B.sno,sname,dept
C.snoas学号,snameas姓名,deptas所在系
D.以上都不对
A.36
B.40
C.以上都不对
D.程序报错
A.SELECT*FROMsys.statements_with_errors_or_warnings
B.SELECT*FROMsys.statements_with_runtimes_in_95th_percentile
C.SELECT*FROMsys.statement_analysis
D.SELECT*FROMsys.host_summary_by_file_io
A.SELECT*FORMSTUDWHEREAGE>12.AND.AGE>15
B.SELECT*FORMSTUDWHEREAGEL>=12.AND.AGE<=15
C.SELECT*FORMSTUDWHEREAGE>=12.OR.AGE<=15
D.SELECT*FORMSTUDWHEREAGE<=12.AND.AGE>=15
A.select(String[]exprs)中只能是字段名,不能是表达式
B.select可以传入多个选择字段
C.algo的select类似于sql中的select
D.select选择的字段可以设置别名
A.SELECT up_studentInfo;
B.CALL proc up_studentInfo();
C.CALL up_studentInfo;
D.SELECT up_studentInfo();
A.select % from hz
B.select % where hz
C.select * from hz
D.select * where hz