In thePL SQL Collectionstutorial of thePL/SQL series, we learned about Collection Methods, Varray, Nested table, and Associative Array with the help of code examples. In this article, we will explore the various types of cursors that PL/SQL has. We will also see the implementation of differ...
location_id integer PL/SQL Code: CREATEORREPLACEFUNCTIONget_left_department_name(p_department_idINdepartments.department_id%TYPE)RETURNVARCHAR2ASv_department_namedepartments.department_name%TYPE;v_resultVARCHAR2(5);BEGINBEGINSELECTdepartment_nameINTOv_department_nameFROMdepartmentsWHEREdepartment_id=p_departm...
Learn about different PL SQL Operators and Control Statements like if-then-else, for loop, while loop, etc. with sample code examples: In thePL/SQL Commandstutorial of thePL/SQL series, we learned about PL SQL INSERT, UPDATE, DELETE and SELECT commands with programming examples. In this art...
The code examples so far have used a few coding styles. This has been done purely to illustrate the flexibility of PL/SQL. Also, it reflects the fact that you are at liberty to choose your own style. In my own work, I tend to use a single style of coding and then stick to that....
Lists, arrays are examples Tables, columns are examples Defining Collection Types and Declaring Collection Variables For creating collections, you specify a collection type and then declare variables of that type. The same scope and instantiation rules apply to collections as they do to other types ...
Some examples: -- functions returning a scalar typeRETURN1+2;RETURNscalar_var;-- functions returning a composite typeRETURNcomposite_type_var;RETURN(1,2, ’three’::text);-- must cast columns to correct types RETURN NEXT and RETURN QUERY ...
Here are some examples of variable declarations: user_idinteger; quantitynumeric(5); urlvarchar; myrow tablename%ROWTYPE; myfield tablename.columnname%TYPE; arow RECORD; 2.1 Declaring Function Parameters Parameters passed to functions are named with the identifiers $1, $2 give a name to the ...
LAST_SQL_FUNCTION_CODE Function:Definition,Search for examples LAST_VALUE:Definition,Search for examples LCR$_DDL_RECORD Constructor:Definition,Search for examples LCR$_DDL_RECORD Type:Definition,Search for examples LCR$_ROW_LIST Type:Definition,Search for examples ...
(1)PL/SQL nativecompilation provides the greatest performance gains for computation-intensiveprocedural operations. Examples are data warehouse applications andapplications with extensive server-side transformations of data for display. (2)PL/SQL nativecompilation provides the least performance gains for PL/...
PL/SQL allows using one loop inside another loop. Following section shows a few examples to illustrate the concept.The syntax for a nested basic LOOP statement in PL/SQL is as follows −LOOP Sequence of statements1 LOOP Sequence of statements2 END LOOP; END LOOP; ...