SELECT SGA FROM V$DBA
SELECT * FROM V$DBA
SELECT * FROM V$SGA
SELECT size FROM V%DBA
第1题:
与“SELECT*FROM教师表INTO DBF A”等价的语句是
A.SELECT*FROM教师表TO DBF A
B.SELECT*FROM教师表TO TABLE A
C.SELECT*FROM教师表INTO TABLE A
D.SELECT*FROM教师表INTO A
第2题:
A.SELECT * FROM V$LOGFILE
B.SELECT * FROM V$LOG
C.SELECT * FROM V$LOGHISTORY
D.SELECT * FROM V$DBA
第3题:
在SQL Server 2000中,有学生表(学号,姓名,年龄,所在系),学号是主码。在这个表上建有视图V1,V1视图的定义语句为: CREATE VIEW V1 AS SELECT姓名,年龄,所在系FROM学生表 WHERE年龄>=(SELECT AVG(年龄)FROM学生表) 有下列操作语句: Ⅰ.UPDATE V1 SET年龄=年龄+1 Ⅱ.SELECT*FROM V1 WHERE年龄>20 Ⅲ.DELETE FROM V1 WHERE年龄>20 Ⅳ.INSERT INTO V1 VALUES(,张三,20,‘计算机系’) 以上语句能正确执行的是
A.仅Ⅰ和Ⅱ
B.仅Ⅱ
C.仅Ⅱ和Ⅳ
D.仅Ⅰ、Ⅱ和Ⅲ
第4题:
( 30 )与 “ SELECT * FROM 教师表 INTO DBF A ” 等价的语句是
A ) SELECT * FROM 教师表 TO DBF A
B ) SELECT * FROM 教师表 TO TABLE A
C ) SELECT * FROM 教师表 INTO TABLE A
D ) SELECT * FROM 教师表 INTO A
第5题:
A.SELECT*FROM CUSTOMER
B.SELECT*CUSTOMER
C.MODIFY*FROM CUSTOMER
D.UPDATE*FROM CUSTOMER
第6题:
有SQL语句:SELECT * FROM 教师 WHERE NOT(工资>3000 OR 工资<2000)与如下语句等价的SQL语句是A)SELECT*FROM 教师 WHERE 工资 BETWEEN 2000 AND 3000B) SELECT*FROM 教师 WHERE 工资>2000 AND 工资<3000C)SELECT*FROM 教师 WHERE 工资>2000 OR 工资<3000D) SELECT*FROM 教师 WHERE 工资<=2000 AND 工资>3000
第7题:
A.SELECT name FROM V$CONTROLFILE
B.SELECT name FROM V$CTRLLFILE
C.SELECT name FROM V$USERFILES
D.SELECT name FROM V$DBAFILE
第8题:
有如下SQL-SELECT语句
SELECT * FROM HH WHERE 单价 BETWEEN 10.6 AND 13.4
与该语句等价的是
A.SELECT * FROM HH WHERE 单价<=13.4 AND 单价>=10.6
B.SELECT * FROM HH WHERE 单价<13.4 AND 单价>10.6
C.SELECT * FROM HH WHERE 单价>=13.4 AND 单价<=10.6
D.SELECT * FROM HH WHERE 单价>13.4 AND 单价<10.6
第9题:
A.SELECT[ccode]FROM[GL_accsum]where not exists(SELECT*FROM[code]group by ccode having[ccode]=[GL_accsum].[ccode])
B.SELECT[ccode]FROM[GL_accsum]v where ccode not in(SELECTccodeFROM[code] where[ccode]=[v].[ccode])
C.select A. ccode from[GL_accsum]a left join code bon A.[ccode]=[b].[ccode] where B.ccode is null
D.select A.ccode codes from[GL_accsum]a join code bon A.[ccode]=[b].[ccode] where B.ccode is null
第10题:
在Oracle数据库系统中,查看标签创建情况:select*from dba_sa_labels。