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单选题
Given the following two tables: TAB1 C1 C2 A 11 B 12 C 13 TAB2 CX CY A 21 C 22 D 23 The following results are desired: C1 C2 CX CY A 11 A 21 C 13 C 22 -- --D 23 Which of the following queries will yield the desired results?（）
A
SELECT * FROM tab1 INNER JOIN tab2 ON c1=cx
B
SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON c1=cx
C
SELECT * FROM tab1 FULL OUTER JOIN tab2 ON c1=cx
D
SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON c1=cx
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更多 “单选题Given the following two tables: TAB1 C1 C2 A 11 B 12 C 13 TAB2 CX CY A 21 C 22 D 23 The following results are desired: C1 C2 CX CY A 11 A 21 C 13 C 22 -- --D 23 Which of the following queries will yield the desired results?（）A SELECT * FROM tab1 INNER JOIN tab2 ON c1=cxB SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON c1=cxC SELECT * FROM tab1 FULL OUTER JOIN tab2 ON c1=cxD SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON c1=cx” 相关考题
考题
Given that tables T1 and T2 contain the following rows:Table T1: C1 C2 1 4 1 3 1 2Table T2: C1 C2 1 1 1 2 1 3Which of the following queries will return only those rows that exist in both T1 and T2?()
A.SELECT * FROM t1 UNION SELECT * FROM t2B.SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2C.SELECT * FROM t1 INTERSECT SELECT * FROM t2D.SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
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Given the following statements:CREATE TABLE tab1 (col1 INT); CREATE TABLE tab2 (col1 INT); CREATE TRIGGER trig1 AFTER UPDATE ON tab1 REFERENCING NEW AS new1 FOR EACH ROW MODE DB2SQL INSERT INTO tab2 VALUES(new1.col1); INSERT INTO tab1 VALUES(2),(3);What is the result of the following query? SELECT count(*) FROM tab2;（）A.3B.2C.1D.0
考题
Given the following two tables:TAB1 C1 C21 Antarctica 2 Africa 3 Asia 4 Australia TAB2 CX CY5 Europe 6 North America 7 South AmericaWhich of the following SQL statements will insert all rows found in table TAB2 into table TAB1?（）A.INSERT INTO tab1 SELECT cx, cy FROM tab2B.INSERT INTO tab1 VALUES (tab2.cx, tab2.cy)C.INSERT INTO tab1 VALUES (SELECT cx, cy FROM tab2)D.INSERT INTO tab1 (c1, c2) VALUES (SELECT cx, cy FROM tab2)
考题
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.2B.7C.9D.14
考题
In which of the following situations should correlation names be used?()
A.A table referenced in the FROM clause has no indexed column.B.The table referenced in the FROM clause has more than 200 columns.C.Two or more tables in the FROM clause have identical column names.D.The FROM clause contains two or more tables in the SELECT statement.
考题
Given11.publicinterfaceStatus{12.／*insertcodehere*／intMY_VALUE=10;13.}Whichthreearevalidonline12?()
A.finalB.staticC.nativeD.publicE.private
考题
Table TAB1 was created using the following statement: CREATE TABLE tab1 (c1 INT, c2 INT, c3 INT, c4 INT, c5 INT); If column C1 is unique and queries typically access columns C1, C2 and C3 together, which statement(s) will createindex(es) that will provide optimal query performance?（）A、CREATE UNIQUE INDEX xtab1 ON tab1 (c1); CREATE INDEX xtab2 ON tab1 (c2) INCLUDE (c3) B、CREATE UNIQUE INDEX xtab1 ON tab1 (c1) INCLUDE (c2, c3) C、CREATE UNIQUE INDEX xtab1 ON tab1 (c3, c2, c1) D、CREATE UNIQUE INDEX xtab1 ON tab1 (c2) INCLUDE (c1, c3)
考题
In which of the following situations should correlation names be used?（）A、A table referenced in the FROM clause has no indexed column.B、The table referenced in the FROM clause has more than 200 columns.C、Two or more tables in the FROM clause have identical column names.D、The FROM clause contains two or more tables in the SELECT statement.
考题
Table TAB1 was created using the following statement: CREATE TABLE tab1 (c1 INT, c2 INT, c3 INT, c4 INT, c5 INT); If column C1 is unique and queries typically access columns C1 and C2 together, which statement(s) will create index(es) that will provide optimal query performance? （）A、 CREATE UNIQUE INDEX xtab1 ON tab1 (c1) include (c2)B、 CREATE UNIQUE INDEX xtab1 ON tab1 (c1); CREATE INDEX xtab2 ON tab1 (c3) INCLUDE (c2) C、 CREATE UNIQUE INDEX xtab1 ON tab1 (c2, c1)D、 CREATE UNIQUE INDEX xtab1 ON tab1 (c2) INCLUDE (c1）
考题
Given the following tables: CONTINENTS ID NAME COUNTRIES 1 Antarctica 0 2 Africa 53 3 Asia 47 4 Australia 14 5 Europe 43 6 North America 23 7 South America 12 REGION ID LOCATION 1 East 2 West How many rows would be returned using the following statement? SELECT location FROM continents, region（）A、2B、7C、9D、14
考题
Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 5 4 5 2 5 5 Table T2: C1 C2 5 1 5 2 5 3 Which of the following queries will return only those rows that exist in T1 and not in T2?（）A、SELECT * FROM T1 MINUS SELECT * FROM T2B、SELECT * FROM T1 EXCEPT SELECT * FROM T2C、SELECT * FROM T2 UNION EXCEPT SELECT * FROM T1D、SELECT * FROM T1 NOT EXISTS SELECT * FROM T2
考题
Given the following two tables: TAB1 R1 A A A B B C C D E TAB2 R2 A A B B C C D Which of the following queries returns the following result set? RETVAL E（）A、SELECT r1 AS retval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2B、SELECT r1 AS retval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2C、SELECT DISTINCT r1 AS retval FROM tab1, tab2 WHERE r1 r2D、SELECT r1 AS retval FROM tab1 UNION SELECT r2 AS retval FROM tab2
考题
Given the following statements: CREATE TABLE tab1 (col1 INT); CREATE TABLE tab2 (col1 INT); CREATE TRIGGER trig1 AFTER UPDATE ON tab1 REFERENCING NEW AS new1 FOR EACH ROW MODE DB2SQL INSERT INTO tab2 VALUES(new1.col1); INSERT INTO tab1 VALUES(2),(3); What is the result of the following query? SELECT count(*) FROM tab2;（）A、3B、2C、1D、0
考题
Given the following two tables: TAB1 C1 C2 A 11 B 12 C 13 TAB2 CX CY A 21 C 22 D 23 The following results are desired: C1 C2 CX CY A 11 A 21 C 13 C 22 -- --D 23 Which of the following queries will yield the desired results?（）A、SELECT * FROM tab1 INNER JOIN tab2 ON c1=cxB、SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON c1=cxC、SELECT * FROM tab1 FULL OUTER JOIN tab2 ON c1=cxD、SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON c1=cx
考题
单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 1 4 1 3 1 2 Table T2: C1 C2 1 1 1 2 1 3 Which of the following queries will return only those rows that exist in both T1 and T2?（）A
SELECT * FROM t1 UNION SELECT * FROM t2B
SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2C
SELECT * FROM t1 INTERSECT SELECT * FROM t2D
SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
考题
单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 5 4 5 2 5 5 Table T2: C1 C2 5 1 5 2 5 3 Which of the following queries will return only those rows that exist in T1 and not in T2?（）A
SELECT * FROM T1 MINUS SELECT * FROM T2B
SELECT * FROM T1 EXCEPT SELECT * FROM T2C
SELECT * FROM T2 UNION EXCEPT SELECT * FROM T1D
SELECT * FROM T1 NOT EXISTS SELECT * FROM T2
考题
单选题Given the following two tables: TAB1 C1 C2 1 Antarctica 2 Africa 3 Asia 4 Australia TAB2 CX CY 5 Europe 6 North America 7 South America Which of the following SQL statements will insert all rows found in table TAB2 into table TAB1?（）A
INSERT INTO tab1 SELECT cx, cy FROM tab2B
INSERT INTO tab1 VALUES (tab2.cx, tab2.cy)C
INSERT INTO tab1 VALUES (SELECT cx, cy FROM tab2)D
INSERT INTO tab1 (c1, c2) VALUES (SELECT cx, cy FROM tab2)
考题
多选题The ratio of two quantities is 4 to 5. If each of the quantities is increased by 3, which of the following could be the ratio of these two new quantities? (Indicate all answer choices that apply.)A7/8B11/13C23/28
考题
多选题Given： 11. 12.catalog 13./catalogTemplate.jsp 14.10 15. Which two are true？（）ALine 13 is not valid for a servlet declaration.BLine 14 is not valid for a servlet declaration.COne instance of the servlet will be loaded at startup.DTen instances of the servlet will be loaded at startup.EThe servlet will be referenced by the name catalog in mappings.
考题
单选题Given the following two tables: TAB1 R1 A A A B B C C D E TAB2 R2 A A B B C C D Which of the following queries returns the following result set? RETVAL E（）A
SELECT r1 AS retval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2B
SELECT r1 AS retval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2C
SELECT DISTINCT r1 AS retval FROM tab1, tab2 WHERE r1 r2D
SELECT r1 AS retval FROM tab1 UNION SELECT r2 AS retval FROM tab2
考题
单选题Table TAB1 was created using the following statement: CREATE TABLE tab1 (c1 INT, c2 INT, c3 INT, c4 INT, c5 INT); If column C1 is unique and queries typically access columns C1, C2 and C3 together, which statement(s) will createindex(es) that will provide optimal query performance?（）A
CREATE UNIQUE INDEX xtab1 ON tab1 (c1); CREATE INDEX xtab2 ON tab1 (c2) INCLUDE (c3) B
CREATE UNIQUE INDEX xtab1 ON tab1 (c1) INCLUDE (c2, c3) C
CREATE UNIQUE INDEX xtab1 ON tab1 (c3, c2, c1) D
CREATE UNIQUE INDEX xtab1 ON tab1 (c2) INCLUDE (c1, c3)
考题
单选题Which two terms can best describe the following pairs of words: table—tables, day + break—daybreak.A
inflection and compoundB
compound and derivationC
inflection and derivation
考题
多选题Given 11.public interface Status { 12./* insert code here */ int MY_VALUE = 10； 13.} Which three are valid on line 12？（）AfinalBstaticCnativeDpublicEprivate
考题
单选题Given the following tables: CONTINENTS ID NAME COUNTRIES 1 Antarctica 0 2 Africa 53 3 Asia 47 4 Australia 14 5 Europe 43 6 North America 23 7 South America 12 REGION ID LOCATION 1 East 2 West How many rows would be returned using the following statement? SELECT location FROM continents, region（）A
2B
7C
9D
14
考题
单选题Given the following two tables: TAB1 C1 C2 1 Antarctica 2 Africa 3 Asia 4 Australia TAB2 CX CY 5 Europe 6 North America 7 South America Which of the following SQL statements will insert all rows found in table TAB2 into table TAB1?（）A
INSERT INTO tab1 SELECT cx, cy FROM tab2B
INSERT INTO tab1 VALUES (tab2.cx, tab2.cy)C
INSERT INTO tab1 VALUES (SELECT cx, cy FROM tab2)D
INSERT INTO tab1 (c1, c2) VALUES (SELECT cx, cy FROM tab2)
考题
单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 1 4 1 3 1 2 Table T2: C1 C2 1 1 1 2 1 3 Which of the following queries will return only those rows that exist in both T1 and T2?（）A
SELECT * FROM t1 UNION SELECT * FROM t2B
SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2C
SELECT * FROM t1 INTERSECT SELECT * FROM t2D
SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
考题
单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 5 4 5 2 5 5 Table T2: C1 C2 5 1 5 2 5 3 Which of the following queries will return only those rows that exist in T1 and not in T2?（）A
SELECT * FROM T1 MINUS SELECT * FROM T2B
SELECT * FROM T1 EXCEPT SELECT * FROM T2C
SELECT * FROM T2 UNION EXCEPT SELECT * FROM T1D
SELECT * FROM T1 NOT EXISTS SELECT * FROM T2
考题
单选题Given the following two tables: TAB1 C1 C2 A 11 B 12 C 13 TAB2 CX CY A 21 C 22 D 23 The following results are desired: C1 C2 CX CY A 11 A 21 C 13 C 22 -- --D 23 Which of the following queries will yield the desired results?（）A
SELECT * FROM tab1 INNER JOIN tab2 ON c1=cxB
SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON c1=cxC
SELECT * FROM tab1 FULL OUTER JOIN tab2 ON c1=cxD
SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON c1=cx
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