Oracle Plsql Exercises

5/22/2018 Oracle Plsql Exercises

1/15

Guess Paper 2010Class XII

Subject Informatics Practices

PL/SQL

PL/SQL is a Procedural Language. It is a procedural extension of Oracle-SQL that offers language constru

similar to those in imperative programming languages. PL/SQL allows its users to develop complex databapplications that reuire the usage of control structures and procedural elements such as procedures! functi

modules etc

.

Limitations of SQL:

". It doesn#t offers procedural capabilities.

$. %o error handling procedures are supported b& SQL.

'. Processing in SQL is (ime-)onsuming.*. %etwor+ traffic is high in SQL.

,. SQL commands can#t be shared b& multiple applications.

Advantages of PL/SQL over SQL:

". It has procedural capabilities.

$. It supports error-handling procedures.'. Processing in PL/SQL is less time consuming.

*. se of PL/SQL reduces the networ+ traffic.

,. PL/SQL promotes sharing of programs b& multiple applications.

Block: PL/SQL bloc+ is a set of related procedural SQL statements! enclosed within the reserved words 0and %1. PL/SQL supports two t&pes of bloc+s.

1. Anonymous Block:these are the bloc+ without header. (he& are not stored in the database.

2. Named Block: these are the bloc+ having headers or labels. (he& are stored in the database. %amed bloc

can be procedures! functions or triggers.

eserved !ords:are the predefined words that are assigned some specific and special meaning. (hese wo

can#t be used as identifiers 2variable! function name! procedure name etc.3 in PL/SQL. .g 1eclare! egin! 4

Loop! nd! nd Loop! nd If! (hen tc.

"omment:comments are the non-executable statements in PL/SQL. (hese are used to increase the readabilof the program. (here are two t&pes of comments supported b& PL/SQL.

1. Single line comment: these comments start with the sign 5- -5

2. #ulti$le Line "omment:these comments start with /6 and end with 6/.

%dentifier: refers to the name of the ob7ect in PL/SQL. .g 8ariable! )ursors! Procedures! 4unctions etc.

&elimiters9 are the s&mbols that have special meaning in PL/SQL. .g assignment operator2 9: 3! concatenat

operator2 ;; 3! range2 .. 3!

&ataty$es specif& the storage format and valid range of value for a variable. PL/SQL provides follow

datat&pes9". Scalar ty$e:it is atomic means it is not made up of other datat&pes. e.g )=>?! 8>?)=>?$! %@

1>(! OOL>%! LO%0.

$. "om$osite ty$e: it is made up of other datat&pes. it has some internal components that can be manipulaindividuall&. .g. (>L! ?)O?1.

'. eference ty$e:it holds values! called pointers that designate other program items.


2/15

'aria(le: is a named storage location in memor& that is used to store the values that can be changed during texecution of the program. PL/SQL supports three t&pes of variables.

". Local 'aria(le:these t&pes of variables are declared in the 1)L>? bloc+ of PL/SQL code.

$. Su(stitution 'aria(le: these t&pe of variables get automaticall& declared b& prefixing 5A# sign to

variable. (hese variables are used to input the data at the run time.'. Bind 'aria(le:these t&pes of variables can be declared in SQL prompt and can be used with PL/SQL co

b& prefix the 59# sign.

Anc)ored &eclaration:when a variable is declared with reference to another variable#s datat&pe +nown

anchored declaration. PL/SQL uses B(CP A B?OD(CP declaration attributes for this. .g.%um" number2,3E

%um$ %um"Bt&peE /6declare variable %um$ having same datat&pe as that of %um". 6/

sal emp.salBt&peE /6 declare variable sal with the datat&pe similar to sal column of @P table6/

Literal:is a value! which is not represented b& an identifier. It is simpl& a value. .g "F! $G" etc.

"onstant9 is that variable whose value is assign at the time of declaration and doesn#t change during the time

execution. .g. pi constant number 9: '."*

Printing in PL/SQL Block: to print the output with in the same line stateme

1@SHO(P(.P(2stringJ3.

(o print the output in different line statement9 1@SHO(P(.P(HLI%2S(?I%0J3

S*+ S*'*,-+P-+ ,N is an environment variable with two possible values O% or O44. (he out

generated b& the 1@SHO(P( pac+age is visible onl& when S?8?O(P( variable is O%.

PL/SQL BL," &%A#:

&*"LA*

/6this bloc+ is used for variable declaration! cursor/record definition 6/

B*%N

/6this bloc+ is used to define the SQL-PL/SQL statements6/

*0"*P+%,N

/6 all the exception handling statements written in this bloc+ 6/

*N&

",N+,L ",NS+-"+S %N PL/SQL:

1. Seuence:means the statements are being executed seuentiall&. (his is the default follow of statements.

3rite a PL/SQL $rogram to in$ut t!o no4s and dis$lay t)e total and average of t)ese no.

1)L>?

%O" %@?E --LO)>L 8>?I>L%O$ %@?E

(O( %@?EP? %@?E

0I%

%O" 9: A%"E --A%" substitution variable%O$ 9: A%$E --A%$ substitution variable

(O( 9: %O" < %O$E

P? 9: (O( /$E1@SHO(P(.P(HLI%25(O(>L 5 ;; (O(3E

1@SHO(P(.P(HLI%25>8?>0 5 ;; P?3E


3/15

%1E

3rite a PL/SQL $rogram to calculate t)e sim$le interest.

1)L>?

P %@?E? %@?E

( %@?ESI %@?E

0I%

P 9: AP?I%)IP>LE

? 9: A?>(E( 9: A(I@E

SI 9: 2P 6 ? 6 (3/"GGE

1@SHO(P(.P(HLI%25I%(?S( 5 ;; SI3E%1E

2. Selection:means the execution of statements depending upon a condition test. If condition evaluates to trset of statements is followed otherwise different set of statements is followed. (his is also +nown as decisconstruct.

%f..end if:this is the simplest form of the I4 statement. If the condition between I4 and (=% us true then

set of statements between the (=% and %1 I4 gets executed otherwise not executed.

%f 5condition6 t)en

.

.

end if

3rite a $rogram to in$ut t)e salary and !orking e7$ of em$ and calculate t)e (onus as 189 of sala

ive 88 S. *7tra (onus to t)ose !)ose !orking e7$. #ore t)an 18 years.

1)L>?S>L %@?E

O%S %@?E

C>?S %@?E0I%

S>L 9: AS>L>?CE

C>?S 9: ADO?KI%0HC>?SE

O%S 9: S>L 6 ."EI4 C>?S J "G (=%

O%S 9: O%S < ,GGE

%1 I4E

1@SHO(P(.P(HLI%25O%S9 5 ;; O%S3E%1E

%f..else..end if:in this construct If the condition between I4 and (=% us true then the set of stateme

between the (=% and LS gets executed otherwise the set of statements between LS and %1 I4 g

executed.

%f 5condition6 t)en

.

else

.

end if


4/15

3rite a PL/SQL $rog to in$ut t!o no4s and $rint t)e ma7imum no (et!een t)em.

1)L>?

%" %@?E

%$ %@?E0I%

%" 9: A%O"E%$ 9: A%O$E

I4 %" J %$ (=%

1@SHO(P(.P(HLI%25%O" IS 0?>(?#3E

LS1@SHO(P(.P(HLI%25%O$ IS 0?>(?#3E

%1 I4E

%1E

#ulti$le %;:this is last and most complex form of I4 statement. It executes the code following a conditiothat evaluates to (?. If no condition evaluates to true the code following LS gets executed.

%f 5condition6 t)en

.

els%f 5condition6 t)en

.

else

.

end if

3rite a PL/SQL $rogram to in$ut t)e Basic Salary and calculate t)e 9: >SI) 6 ."$E1> 9: >SI) 6 .GFE

LSI4 >SI) J "$GGG (=%

=?> 9: >SI) 6 ."E1> 9: >SI) 6 .GE

LSI4 >SI) J MGGG (=%

=?> 9: >SI) 6 ..GNE

1> 9: >SI) 6 .G*ELS


5/15

=?> 9: >SI) 6 .G,E1> 9: >SI) 6 $GGE

%1 I4E

%( 9: >SI) < =?> < 1>E

1@SHO(P(.P(HLI%25>SI)9 5 ;; >SI)3E1@SHO(P(.P(HLI%25=?>9 5 ;; =?>3E

1@SHO(P(.P(HLI%251>9 5 ;; 1>3E1@SHO(P(.P(HLI%25%(9 5 ;; %(3E

%1E

Nested %fs:when I4 statement can contain another I4 inside it is called %S(1 Ifs.

%; ",N&%+%,N +


6/15

ctr 9: ctr < "Eexit when ctr J "GE

end loopE

endE

Numeric ;or Loo$:this looping construct is used to repeat a set of instructions for a fixed no of times. S&nta

;or ctr in IreverseJ start .. end

Loo$

CCstatements to (e e7ecuted

end loo$

3rite t)e code to $rint 1 to 18.

0I%

4O? I I% ".."G LOOP1@SHO(P(.P(HLI%2I3E

%1 LOOPE%1E

3%+* +


7/15

tot 9: tot < remEno 9: no remE

no 9: no /"GE

end loopE

dbmsHoutput.putHline2tot3EendE

N*S+*& L,,P:when a loop exists inside another loop is called nested loop.

Loo$

.

Loo$

.

end loo$

end loo$

3%+* A PL/SQL P, +, P%N+ + 1? H2.

Program to in$ut t!o no and c)eck !)et)er no1 is divisi(le (y no2 or not.

Program to in$ut H no4s and find out t)e ma7imum no.

Program to in$ut $rinci$al amount= time. %f time more t)an 18 yrs= calculate t)e sim$le interest !

>9 interest ot)er!ise !it) ?9. Program to $rint first n odd num(ers in descending order.

&A+ABAS* %N+*A"+%,N %N PL/SQL

De can use an& or the following SQL statements for SQL ueries in PL/SQL code9

S*L*"+9 for extracting data.

%NS*+9 for add new data.

-P&A+*9 for change in existing data.

&*L*+*9 for remove existing data.


8/15

S*L*"+ %N+, S+A+*#*N+9 in SQL select statement is used to displa& the results on the screen. utPL/SQL SL)( I%(O statement is used to fetch the single record from the database and store it into anoth

variables for further processing. S&ntax9

S*L*"+ 5L%S+6 %N+, 5'AA%BL*S6 ;,# 5+ABL*KNA#*6 I3?%O %@?E

@PH%>@ @P.%>@B(CPE

S>L>?C @P.S>LB(CPE

0I%%O 9: A@P%OE

SL)( %>@! S>L I%(O @PH%>@! S>L>?C 4?O@ @P D=? @P%O:%OE

1@SHO(P(.P(HLI%2@PH%>@3E1@SHO(P(.P(HLI%2S>L>?C3E

%1E

3rite t)e "ode to in$ut t)e de$t4s no and $rint t)e total em$4s and sum of salary !it) in t)at de$t.

1)L>?

1%O %@?E(O(>L %@?

S@HS>L %@?E

0I%

1%O 9: A1P(%OESL)( )O%(263! S@2S>L3 I%(O (O(>L! S@HS>L 4?O@ @P D=? 1P(%O : 1%OE

1@SHO(P(.P(HLI%2(O(>L3E

1@SHO(P(.P(HLI%2S@HS>L3E%1E

3rite t)e PL/SQL code to in$ut t)e em$4s no and increase t)e salary (y 189 if )is salary 5 8

ot)er!ise delete t)e record.

1)L>?

%O %@?E

S>L>?C %@?E0I%

%O 9: A@P%OE

SL)( S>L>?C I%(O S>L 4?O@ @P D=? @P%O : %OE

I4 S>L>?C ,GGG (=%P1>( @P S( S>L : S>L < S>L 6." D=? @P%O : %OE

1@SHO(P(.P(HLI%25S>L>?C P1>(#3ELS

1L( 4?O@ @P D=? @P%O : %OE

1@SHO(P(.P(HLI%25?)O?1 1L(1#3E%1 I4E

%1E

3rite PL/SQL code to insert t)e record in de$t ta(le.

1)L>?


9/15

1%O %@?E1P(H%>@ 1P(.1%>@B(CPE

1LO) 1P(.LO)B(CPE

0I%

1%O 9: A1P(%OE1P(H%>@ 9: 5A1%>@#E

1LO) 9: 5ALO)>(IO%#EI%S?( I%(O 1P( 8>LS21%O! 1P(H%>@! 1LO)3E

1@SHO(P(.P(HLI%25?)O?1 I%S?(#3E

%1E

ecords: PL/SQL ?ecord is a combination of fields. ?ecords are used to represent complete row in a tab

ecord is a grou$ of multi$le $iece of information= related to one anot)er= called fields4.

PL/SQL su$$orts t)ree ty$es of records:

+a(le Based ecordrepresents each field in the table. 4ields in the record have the same name and datat&pe

the columns in the table have. (able ased ?ecord is declared with an anchored declaration-usB?OD(CP.

3rite t)e PL/SQL code to dis$lay t)e ename and sal of em$ !)ose em$no is in$ut (y user= using ta(

(ased record.

1)L>?

?S @PB?OD(CPE0I%

SL)( 6 I%(O ?S 4?O@ @P D=? @P%O:A%OE

1@SHO(P(.P(HLI%2?S.%>@ ;;?S.S>L3E%1E

Programmer &efined ecord is declared and defined explicitl& b& the programmer as per reuirement. 4irsa ?)O?1 t&pe is defined and then variable of that ?)O?1 t&pe is declared.

3rite t)e PL/SQL code to dis$lay t)e ename and sal of em$ !)ose em$no is in$ut (y user= usi

$rogrammerC(ased record.

1)L>?

(CP ?SH@P IS ?)O?12

@PH%>@ @P.%>@B(CP!

@PHS>L @P.S>LB(CP3E

?S ?SH@PE

0I%SL)( %>@! S>L I%(O ?S 4?O@ @P D=? @P%O:A%OE1@SHO(P(.P(HLI%2?S.@PH%>@3E

1@SHO(P(.P(HLI%2?S.@PHS>L3E

%1E

"ursor Based ecord is composite variable that represents each field in a cursor. (he fields of record h

same name and datat&pe as the fields of the cursor on which the record is based. It is declared usiB?OD(CP


10/15

*7ce$tion:are some undesired situations when PL/SQL program terminated unexpectedl&.)P(IO% =>%1LI%0 is used to handle run-time errors. >ll the xception =andling code is written in

)P(IO% section of a PL/SQL program.

&*"LA*

/6this bloc+ is used for variable declaration! cursor/record definition 6/B*%N

/6this bloc+ is used to define the SQL-PL/SQL statements6/

*0"*P+%,N

3ttempt to insert duplicate value.

I%8>LI1H)?SO? Illegal cursor operation occurred

3rite PL/SQL scri$t to in$ut sal amt and dis$lay t)e *m$ Name earning same sal amt. -

N,K&A+AK;,-N& and +,,K#ANM ,3S *7ce$tion.

1)L>?

S>L>?C %@?E

H%>@ @P.%>@B(CPE

0I%S>L>?C 9: AS>LE

SL)( %>@ I%(O H%>@ 4?O@ @P D=? S>L:S>L>?CE

1@SHO(P(.P(HLI%2H%>@3 E)P(IO%

D=% %OH1>(>H4O%1 (=%

1@SHO(P(.P(HLI%25I%8>LI1 8>L#3ED=% (OOH@>%CH?ODS (=%

1@SHO(P(.P(HLI%25return multiple value#3E%1E

2. -ndefined *7ce$tions:these are the less common errors that have not given predefined names. 4or therrors O?> error code i.e.! the s&stem compilation error messages are displa&ed.

H. -serCdefined *7ce$tions:errors that do not cause a run-time error! but will violate business rules. Su

errors are handled through programmer created custom error messages. ser-defined xception is raised w?>IS )P(IO%H%>@J.

3rite PL/SQL scri$t t)at tra$s *,K&%'%&* e7ce$tion !)en a no is divided (y ot)er no. also rais

user define e7ce$tion if no2 greater t)an no1.


11/15

1)L>?%O" %@?E

%O$ %@?E

%$H0(H%" )P(IO%E --user-defined exception

0I%%O" 9: A%"E

%O$ 9: A%$EI4 %O$ J %O" (=%

?>IS %$H0(H%"E --user-defined exception raised.

%1 I4E

1@SHO(P(.P(HLI%2%O" / %O$3E)P(IO%

D=% R?OH1I8I1 (=%

1@SHO(P(.P(HLI%25not divide b& ero#3ED=% %$H0(H%" (=%

1@SHO(P(.P(HLI%25no$ greater than no"#3E%1E

*0""%S*:

Program to in$ut t)e de$tno and $rint t)e de$t name along !it) de$tno (ased u$on de$t ta(le.

3rite a PL/SQL (lock to $rint t)e )ig)est $aid and lo!est $aid em$loyee from em$ ta(le.

3rite a PL/SQL (lock to delete all t)e ro!s of a $articular de$artment from t)e ta(le em$ !)e

de$tno is acce$ted from t)e user.

3rite PL/SQL code to calculate t)e commission (ased u$on t)e sale in$ut (y user.

Sale Amt "omm.

518888 88 O 189of sale

18888 28888 1888 O 19 of sale

6 28888 188 O 289 of sale


12/15

+ransaction:us a logical unit of wor+ that is composed of one or more 1@L or 11L statements. > transactimust be either saved or rolled bac+.

",##%+9 when &ou manipulate the data all the 1@L operation affected in the temporar& area and datab

remains unaffected from all these changes. If &ou want to store these changes to the database! &ou need

)O@@I( the transaction.,LLBA": means undoing an& changes that have occurred in the current transaction.Oracle undoes so

or all changes made b& &our session to the database in the current transaction.

SA'*P,%N+9 is used to mar+ a specific point in current transaction. S>8POI%( gives a name to and mar

point in the processing of current transaction. It allows &ou to ?OLL>)K (O that point.

"-S,

)?SO? provides &ou a wa& to select multiple records from the database and process each record individuainside PL/SQL program. (he set of rows returned b& multi-uer& is called result set of active set. (here are tw

t&pes of cursors supported b& PL/SQL.

1. %m$licit "ursor 2. *7$licit "ursor

S+*PS *Q-%*& ;, *0PL%"%+ "-S,

1. &eclare t)e cursor: in this process! se

statement associated with cursor is defined. S&ntax

"ursor 5curKname6 is select statement

2. ,$en t)e cursor:in this process when curso

opened the select statement associated with cursoexecuted. S&ntax9

,$en 5curKname6IF$arameterKlistGJ

H. ;etc) ro!s from t)e cursor:in this step! one ris retrieved from the active set and stores it

variables for further processing. S&ntax9;etc) 5curKname6 into 5varia(leKlist6

. "lose t)e cursor:in this step the cursor is clos(he close statement disables the cursor. Cou

reopen it. S&ntax9 close 5curKname6

"-S, A++%B-+*S9 cursor has fattributes9

". 9N,+;,-N& Attri(ute:rows are fetched from the cursor#s active set one at a time. If the last fe

returned a row B%O(4O%1 evaluates to 4>LS. If the last fetch failed to return a row then B%O(4O%evaluates to (?.

$. 9;,-N& Attri(ute:is logical opposite of B%O(4O%1. B4O%1 evaluates to (? if the last fereturned a row or 4>LS if no row was returned.

'. 9,3",-N+ Attri(ute: when cursor is opened! Browcount is ero. Dhen the records are fetched fractive set it is incremented b& one each time. It returned how man& records are fetched from the active set.

*. 9%S,P*N Attri(ute:evaluates to (? if cursor is open! otherwise it evaluates to 4>L.

3rite t)e PL/SQL scri$t to dis$lay t)e ename= o(= sal and de$tno from t)e em$ ta(le.

1)L>?)?SO? )?H@P IS SL)( %>@! O! S>L! 1P(%O 4?O@ @PE

?S )?H@PB?OD(CPE --cursor-based record

%m$licit "ursor *7$licit "ursor

(hese cursors aremaintained internall& b&

PL/SQL. (hese areopened and closed

automaticall& when the

uer& is executed.

(hese cursors are definedwith a name and are

opened and closedexplicitl& in a PL/SQL

program.

(he cursor attributes are

prefixed with SQL. 2e.g.

SQLB4O%13. ecauseSQL is default name of

implicit cursor.

(he cursor attributes are

prefixed with the cursor

name. 2e.g. curBfound3where cur is the name of

explicit cursor.

(he cursor attributeBISOP% is alwa&s false.

ecause cursor getsclosed automaticall& after

the statement is over.

(he BISOP% attributeholds the value

2(?/4>LS3 of thestatus of the cursor.

Onl& one row can beprocessed using the

SL)( I%(O statement.

>n& number of rows canbe processed.


13/15

0I%OP% )?H@PE

LOOP

4()= )?H@P I%(O ?SE

I( D=% )?H@PB%O(4O%1E1@SHO(P(.P(HLI%2?S.%>@ ;; 5 5 ;; ?S.S>L ;; 5 5 ?S.O ;; 5 5;; ?S.1P(%O3E

%1 LOOPE)LOS )?H@PE

%1E

3rite a PL/SQL scri$t to increase t)e salary as $er follo!ing criteria:

SALAM A#+ %N"*#*N+*& BM

51288 >9

5288 129

588 19

,+?)?SO? )?H@P IS SL)( @P%O! S>L 4?O@ @PE

?S )?H@PB?OD(CPE

0I%OP% )?H@PE

LOOP

4()= )?H@P I%(O ?SE

I4 ?S.S>L "$GG (=%P1>( @P S( S>L : S>L 6".GF D=? @P%O:?S.@P%OE

LSI4 ?S.S>L $,GG (=%

P1>( @P S( S>L : S>L 6"."$ D=? @P%O:?S.@P%OELSI4 ?S.S>L *,GG (=%

P1>( @P S( S>L : S>L 6".", D=? @P%O:?S.@P%OE

LSP1>( @P S( S>L : S>L 6".$ D=? @P%O:?S.@P%OE

%1 I4E

)LOS )?H@PE

%1E

ParameteriRed "ursors: a cursor can receive values provided b& &ou! such cursors are +nown

Parameteried cursors.

"ursor curKname F$arameter dataty$e=..G is select statementDe can provide value for these parameters at the time of opening cursor as per following s&ntax9

,$en curKnameFvalue= G

3rite t)e PL/SQL scri$t to dis$lay t)e ename= o(= sal of $articular de$t t)at is in$ut (y user usi

$arameter.

1)L>?

)?SO? )?H@P21%O %@?3 IS SL)( %>@! O! S>L 4?O@ @P D=? 1P(%O

1%OE?S )?H@PB?OD(CPE --cursor based record

1P(H%O %@?E


14/15

0I%1P(H%O 9: A1P(%OE

OP% )?H@P21P(H%O3E

LOOP

4()= )?H@P I%(O ?SEI( D=% )?H@PB%O(4O%1E

1@SHO(P(.P(HLI%2?S.%>@ ;; 5 5 ;; ?S.S>L ;; 5 5;; ?S.O3E%1 LOOPE

)LOS )?H@PE

%1E

"-S, ;, L,,P:

PL/SQL provides a special +ind of 4O? loop to process the rows returned in an explicit cursor. In a )ursor 4

Loop! a declared cursor is Opened! 4etched and )losed automaticall& when all of the rows have been process

S&ntax9

;, 5*",&K%N&*06 %N 5"-S,KNA#*6L,,P

CCS+A+*#*N+S +, B* *0*"-+*&

*N& L,,P

3rite a PL/SQL scri$t to dis$lay t)e name= salary and (onus Fsalary T .12G for eac) em$ using cursor

loo$.

1)L>?)?SO? )?H@P IS SL)( %>@! S>L! S>L 6".$ 5O%S# 4?O@ @PE

0I%

4O? ?S I% )?H@P LOOP1@SHO(P(.P(HLI%2?S.%>@ ;; 5 5 ;; ?S.S>L ;;# 5 ;;?S.O%S3 E

%1 LOOPE%1E

"-S, ;, L,,P -S%N -SBCQ-*M:

Driting a sub-uer& in place of cursor name in the cursor 4or Loop can do this. S&ntax9

;, 5*",&KNA#*6 %N 5S-BCQ-*M6 L,,P

CCS+A+*#*N+S +, B* *0*"-+*&

*N& L,,P

3rite a PL/SQL scri$t to dis$lay t)e name= salary for eac) em$ using cursor for loo$.

0I%4O? ?S I% 2SL)( %>@! S>L 4?O@ @P3

LOOP1@SHO(P(.P(HLI%2?S.%>@ ;; 5 5 ;; ?S.S>L3 E

%1 LOOPE%1E

-NSL,'*& *0*"%S*:

Drite a PL/SQL script that uses cursor 4or Loop to calculate bonus for emplo&ees as ,Bof salar& < $.,B

comm. (he calculated bonus is store in a table bonuses2empno! bonus3. PL/SQL script to increment the salaries of emplo&ees as per following specifications9

Salesmen If salar& < comm. J $GGG then "GB of salar& otherwise "$B of salar&

>nal&sts $GB of salar&


15/15

)ler+s "$B of salar&@anagers $,B of salar&

Documents

Oracle Plsql Exercises