If a linguistic study describes and analyzes the language people actually use, it is s

A.SHOW TABLE CREATE stud;

B.DISPLAY CREATE TABLE stud;

C.SHOW CREATE TABLE stud;

D.DESCRIBE stud;

A.SHOW TABLE CREATE stud;

B.DISPLAY CREATE TABLE stud;

C.SHOW CREATE TABLE stud;

D.DESCRIBE stud;

What are the two main types of stud link chain ________．

A.Oil Rig chain and Oil Field Stud Link chain

B.Flash-butt welded chain and Di-Lok chain

C.Flash-butt welded chain and Oil Rig chain

D.Oil Field Stud Link chain and Flash-butt welded chain

A．SELECT XM,SA FROM STUD FOR SA ＜25

B．SELECT XM,SA FROM STUD WHERE SA ＜25

C．SELECT XM,SA ON STUD FOR SA ＜25

D．SELECT XM,SA ON STUD WHERE SA ＜25

把学生表STUD中的学生“王小鱼”的姓名改为“王大川”，实现该功能的SQL语句是______。

A．UPDATE STUD姓名＝“王小鱼”WHERE 姓名＝“王大川”

B．UPDATE STUD姓名＝“王大川”WHERE姓名＝“王小鱼”

C．UPDATE STUD SET姓名＝“王小鱼”WHERE姓名＝“王大川”

D．UPDATE STUD SET姓名＝“王大川”WHERE姓名＝“王小鱼”

A.SHOW TABLE CREATE stud;

B.DISPLAY CREATE TABLE stud;

C.SHOW CREATE TABLE stud;

D.DESCRIBE stud;

A.struct student { long no; double score; };

B.struct stud[20] { long no; double score; };

C.struct student { long no; double score; }stud[20];

D.struct { long no; double score; } stud[100];

A./root/stud

B./stud

C./home/stud

D./root/home/stud

A./root/stud

B./stud

C./home/stud

D./root/home/stud

A.SELECT * FROM stud ORDER BY birthday DESC LIMIT 8;

B.SELECT * FROM stud ORDER BY birthday ASC LIMIT 8;

C.SELECT * FROM stud ORDER BY birthday ASC LIMIT 7;

D.SELECT * FROM stud ORDER BY birthday DESC LIMIT 7;