Skip to main content

Questions series -1

Please Answer the all the questions in comments box

Question 1:

-- Is this Satement Excuted successfully? Please expalin the senario.
CREATE TABLE EMP
(
ID1 INT,
ID2 INT,
ID3 INT,
ID4 INT,
ID5 INT,
ID6 INT,
ID7 INT,
ID8 INT,
ID9 INT,
ID10 INT,
ID11 INT,
ID12 INT,
ID13 INT,
ID14 INT,
ID15 INT,
ID16 INT,
ID17 INT,
CONSTRAINT PK_ID PRIMARY KEY(ID1,ID2,ID3,ID4,ID5,ID6,ID7,ID8,ID9,ID10,ID11,ID12,ID13,ID14,ID15,ID16,ID17)
)

Question 2:

--Is this Satement Excuted successfully? Please expalin the senario.
CREATE TABLE EMP
(
NAME CHAR(2000) PRIMARY KEY
)

Question 3:

--Is this Satement Excuted successfully? Please expalin the senario.
DROP TABLE EMP
CREATE TABLE EMP
(
NAME VARCHAR(2000) PRIMARY KEY
)

Question 4:

--Is this Satement Excuted successfully? Please expalin the senario.
INSERT INTO EMP(NAME) VALUES(REPLICATE('A', 2000))





Labels:

Comments

  1. UnknownFebruary 24, 2015 at 4:38 AM

    Question 1:
    The maximum limit for index or statistics key column list is 16
    Question 2
    This index has a key length of at least 2000 bytes.The maximum permissible key length is 900 bytes
    Question 3
    created table but up to 900 bytes accepted.For some combination of large values, the insert/update operation will fail.
    Question 4
    exceeds the maximum length of 900 bytes.

    ReplyDelete

Post a Comment

Popular posts from this blog

Coalesce function

Coalesce function returns the first non-null value among the arguments. Syntax: Coalesce (expression [,..n]) Here is example using Coalesce function Example 1 DECLARE @Str1 varchar ( 10 ), @str2 varchar ( 20 ), @Str3 varchar ( 20 ) SET @Str2 = 'Sql' , @Str3 = 'Server' SELECT COALESCE ( @Str1 , @str2 , @Str3 ) As [Coalesce] In above example @Str2 value is ‘Sql’ , @str3 value is ‘Server’  and @str1 values is Null because it not assigned any value . Output: It return’s “Sql” because Coalesce function return’s first non null value. Example 2: Coalesce in select statement. IF OBJECT_ID ( 'Employee' , 'U' ) IS NOT NULL DROP TABLE Employee CREATE TABLE Employee (   ID INT IDENTITY ( 1 , 1 ) PRIMARY KEY ,   NAME VARCHAR ( 20 ),   SALARY INT ) INSERT INTO Employee   ( NAME , SALARY ) VALUES ( 'Rakesh' , 5000 ),(NULL, 6000 ),( 'Naresh...
1 comment
Read more

IDENTITY COLUMNS

Identity column specifies when ever new value is inserted into table. Identity column automatically inserted value into column. Identity Column can be specified at the time of creation of table. CREATE TABLE Employee (  EMPID INT IDENTITY ( 1 , 1 ),  EMPNAME VARCHAR ( 50 ),  SALARY INT ) In above table creation script EMPID column specifies IDENTITY property i.e., whenever a new row inserted into a Employee table EMPID Column will automatically value is inserted. INSERT INTO Employee ( EMPNAME , SALARY ) VALUES ( 'RAKESH' , 7000 ) INSERT INTO Employee ( EMPNAME , SALARY ) VALUES ( 'ALI' , 12000 ) SELECT * FROM Employee When u run above select statement is the following result is if u are trying insert value into identify columns .it will give error. INSERT INTO Employee ( EMPID , EMPNAME , SALARY ) VALUES ( 1 , 'RAKESH' , 7000 ) Msg 5...
Post a Comment
Read more