SQL Êý¾Ý¿âÖ®Ò»
1. SELECT
ʵÀý105
SELECT ID "±àºÅ",Name ÐÕÃû,
Math_Score 'Êýѧ³É¼¨', //ÔõôÓеÄÓÐAS,ÓеÄûÓÐ
Music_Score AS ÒôÀֳɼ¨,
English_Score AS Ó¢Îijɼ¨
from tb_StuScore
SELECT ±àºÅ, ÉÌÆ·Ãû³Æ,ÊýÁ¿,µ¥¼Û,½ø¼Û,
(µ¥¼Û*ÊýÁ¿) AS ÏúÊÛ¶î,
(µ¥¼Û*ÊýÁ¿-½ø¼Û*ÊýÁ¿) AS ÀûÈó
from tb_xsb
SELECT ID,Name,Math_Score,Music_Score,EngLish_Score
from tb_StuScore
WHERE NOT (EngLish_Score>= 90) OR (Math_Score>=95)
SELECT *
from tb_StuScore
WHERE Math_score LIKE '8_'
SELECT *
from tb_StuScore
WHERE Name LIKE 'Áõ%'
SELECT *
from tb_StuScore
WHERE English_score LIKE '9[5-9]%'
SELECT *
from tb_StuScore
WHERE Math_Score LIKE '[^9][0-9]'
SELECT *
from tb_StuScore
WHERE (Name LIKE 'Áõ%')
AND (
(Math_Score LIKE '[^7]_')
OR (EngLish_score LIKE '9[0-9]')
)
SELECT 'ÐÕÃû£º'+ Name + '£»±àºÅ£º'+
CONVERT(varchar(3),id) AS ѧÉúÐÅÏ¢
from tb_StuScore
SELECT ÐÕÃû,LTRIM(ÐÕÃû) AS È¥³ý×óÃæ¿Õ¸ñ,
RTRIM(ÐÕÃû) AS È¥³ýÓÒÃæ¿Õ¸ñ,
LTRIM(RTRIM(ÐÕÃû)) AS È¥³ý×óÓÒ¿Õ¸ñ
from ¿Í»§ÐÅÏ¢±í
SELECT *
from tb_StuScore
WHERE Music_Score IN (85,95,100)
SELECT *
from tb_StuScore
WHERE Music_Score NOT IN (85,95,100)
SELECT *
from tb_StuScore
WHERE Music_Score > ALL
( SELECT Music_Score
from tb_StuScore
WHER
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1. DDL ºÍ DML
/**//*** DDL ***/
begin
EXECUTE IMMEDIATE 'drop table temp_1';
EXECUTE IMMEDIATE 'create table temp_1(name varchar2(8))';
end;
/**//*** DML ***/
declare
v_1 varchar2(8);
& ......