SELECT * FROM T1 MINUS SELECT * FROM T2
SELECT * FROM T1 EXCEPT SELECT * FROM T2
SELECT * FROM T2 UNION EXCEPT SELECT * FROM T1
SELECT * FROM T1 NOT EXISTS SELECT * FROM T2
第1题:
在下列查询语句中,与SELECT TABl*FROM,TABl WHERE InStr([简历],”篮球”)<>o功能相同的语句是( )。
A.SELECT TABl.*FROM TABl WHERE TABl.简历Like”篮球”
B.SELECT TABl.*FROM TABl WHERE TABl.简历Like”*篮球”
C.SELECT TABl.*FROM TABl WHERE TABl.简历Like”*篮球*”
D.SELECT TABl.*FROM TABl WHERE TABl.简历Like”篮球*”
第2题:
A.REVOKE DROP ON t1 FROM PUBLIC
B.REVOKE UPDATE ON t1 FROM PUBLIC
C.REVOKE DELETE ON t1 FROM PUBLIC
D.REVOKE CONTROL ON t1 FROM PUBLIC
第3题:
A. It may advise the use of online table redefinition for tables in dictionary managed tablespace.
B. It may advise the use of segment shrink for tables in dictionary managed tablespaces it the no chained rows.
C. It may advise the use of online table redefinition for tables in locally managed tablespaces
D. It will detect and advise about chained rows.
E. It may advise the use of segment shrink for free list managed tables.
第4题:
下面()集合包含在DataSet集合中。
第5题:
Given the following tables: CONTINENTS ID NAME COUNTRIES1 Antarctica 02 Africa 533 Asia 474 Australia 145 Europe 436 North America 237 South America 12REGION ID LOCATION 1 East 2 WestHow many rows would be returned using the following statement? SELECT location FROM continents, region()
A.2
B.7
C.9
D.14
第6题:
A.SELECT * FROM t1 UNION SELECT * FROM t2
B.SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2
C.SELECT * FROM t1 INTERSECT SELECT * FROM t2
D.SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
第7题:
The following statements:CREATE TABLE t1 (col1 INT NOT NULL, PRIMARY KEY(col1)); CREATE TABLE t2 (col1 INT NOT NULL, col2 CHAR(1) NOT NULL, PRIMARY KEY (col1, col2), FOREIGN KEY (col1) REFERENCES t1 (col1) ON DELETE CASCADE ON UPDATE RESTRICT); CREATE TABLE t3 (col1 INT NOT NULL, col2 INT NOT NULL, PRIMARY KEY (col1, col2),FOREIGN KEY (col1) REFERENCES t1 (col1) ON DELETE NO ACTION ON UPDATE RESTRICT);INSERT INTO t1 VALUES (1), (2); INSERT INTO t2 VALUES (1, ‘a‘), (1, ‘b‘), (2,‘c‘); INSERT INTO t3 VALUES (1, 100), (2, 200), (2,300);How many rows will be deleted by the following DELETE statement? DELETE FROM t1 WHERE col1= 1;()
A.4
B.3
C.1
D.0
第8题:
下面不属于同一函数模板的是( )。
A.template<class t1> t1 max(t1 &a,t1 &b) {…}template<class t2> t2 max(t2 &a,t2 &b) {…}
B.template<class t1>t1 max(t1 a,t1 b){…}template<class t2>t2 max(t2 &a,t2 &b){…}
C.template<class t1> t1 max(t1 * a,t1 * b) {…} template<class t2> t2 max(t2 &a,t2 &b) {…}
D.template<class t1>t1 max(t1 a,t1 b){…}template<class t2>t2 max(t2 &a,t2 &b,t2 c){…}
第9题:
同一组织T1与T2值的关系是()。
第10题:
包含在DataSet集合中的集合是()。