Nested Table with Table row elements inside : Associative Arrays « Collections « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial
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25.Cursor
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27.Function Procedure Packages
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31.System Packages
32.Object Oriented
33.XML
34.Large Objects
35.Transaction
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Oracle PL/SQL Tutorial » Collections » Associative Arrays 




SQL> -- create demo table
SQL> create table Employee(
  2    ID                 VARCHAR2(BYTE)         NOT NULL,
  3    First_Name         VARCHAR2(10 BYTE),
  4    Last_Name          VARCHAR2(10 BYTE),
  5    Start_Date         DATE,
  6    End_Date           DATE,
  7    Salary             Number(8,2),
  8    City               VARCHAR2(10 BYTE),
  9    Description        VARCHAR2(15 BYTE)
 10  )
 11  /

Table created.

SQL>
SQL> -- prepare data
SQL> insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)
  2               values ('01','Jason',    'Martin',  to_date('19960725','YYYYMMDD'), to_date('20060725','YYYYMMDD'), 1234.56'Toronto',  'Programmer')
  3  /

row created.

SQL> insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)
  2                values('02','Alison',   'Mathews', to_date('19760321','YYYYMMDD'), to_date('19860221','YYYYMMDD'), 6661.78'Vancouver','Tester')
  3  /

row created.

SQL> insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)
  2                values('03','James',    'Smith',   to_date('19781212','YYYYMMDD'), to_date('19900315','YYYYMMDD'), 6544.78'Vancouver','Tester')
  3  /

row created.

SQL> insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)
  2                values('04','Celia',    'Rice',    to_date('19821024','YYYYMMDD'), to_date('19990421','YYYYMMDD'), 2344.78'Vancouver','Manager')
  3  /

row created.

SQL> insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)
  2                values('05','Robert',   'Black',   to_date('19840115','YYYYMMDD'), to_date('19980808','YYYYMMDD'), 2334.78'Vancouver','Tester')
  3  /

row created.

SQL> insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)
  2                values('06','Linda',    'Green',   to_date('19870730','YYYYMMDD'), to_date('19960104','YYYYMMDD'), 4322.78,'New York',  'Tester')
  3  /

row created.

SQL> insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)
  2                values('07','David',    'Larry',   to_date('19901231','YYYYMMDD'), to_date('19980212','YYYYMMDD'), 7897.78,'New York',  'Manager')
  3  /

row created.

SQL> insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)
  2                values('08','James',    'Cat',     to_date('19960917','YYYYMMDD'), to_date('20020415','YYYYMMDD'), 1232.78,'Vancouver', 'Tester')
  3  /

row created.

SQL>
SQL>
SQL>
SQL> -- display data in the table
SQL> select from Employee
  2  /


ID   FIRST_NAME LAST_NAME  START_DAT END_DATE      SALARY CITY       DESCRIPTION
---- ---------- ---------- --------- --------- ---------- ---------- ---------------
01   Jason      Martin     25-JUL-96 25-JUL-06    1234.56 Toronto    Programmer
02   Alison     Mathews    21-MAR-76 21-FEB-86    6661.78 Vancouver  Tester
03   James      Smith      12-DEC-78 15-MAR-90    6544.78 Vancouver  Tester
04   Celia      Rice       24-OCT-82 21-APR-99    2344.78 Vancouver  Manager
05   Robert     Black      15-JAN-84 08-AUG-98    2334.78 Vancouver  Tester
06   Linda      Green      30-JUL-87 04-JAN-96    4322.78 New York   Tester
07   David      Larry      31-DEC-90 12-FEB-98    7897.78 New York   Manager
08   James      Cat        17-SEP-96 15-APR-02    1232.78 Vancouver  Tester

rows selected.

SQL>
SQL>
SQL> SET ECHO ON
SQL> SET SERVEROUTPUT ON
SQL>
SQL> DECLARE
  2      CURSOR all_emps IS
  3          SELECT *
  4          FROM employee
  5          ORDER BY first_name;
  6
  7      --Define an index-by table type.
  8      TYPE emp_table IS TABLE OF employee%ROWTYPE
  9                     INDEX BY BINARY_INTEGER;
 10
 11      --Declare an index-by table variable to
 12      --hold the employee records that we read in.
 13      emps emp_table;
 14      emps_max BINARY_INTEGER;
 15  BEGIN
 16      emps_max := 0;
 17
 18      FOR emp IN all_emps LOOP
 19          emps_max := emps_max + 1;
 20
 21          emps(emps_max).id := emp.id;
 22          emps(emps_max).first_name := emp.first_name;
 23          emps(emps_max).last_name := emp.last_name;
 24          emps(emps_max).salary := emp.salary;
 25      END LOOP;
 26  END;
 27  /

PL/SQL procedure successfully completed.

SQL>
SQL>
SQL>
SQL> -- clean the table
SQL> drop table Employee
  2  /

Table dropped.

SQL>














26.7.Associative Arrays
26.7.1.Associative Arrays demo
26.7.2.Associative arrays (index-by tables)
26.7.3.PL/SQL Table
26.7.4.Index by string
26.7.5.Nested Table with Table row elements inside
26.7.6.Assign value to PL/SQL table
26.7.7.TABLE.Exist
26.7.8.Clear the salaries table by assigning the empty version to it
26.7.9.Place some values into the salaries table
26.7.10.PL/SQL table of cursor
26.7.11.Select data into PL/SQL table of cursor
26.7.12.Use For loop to output data in a PL/SQL table of cursor
26.7.13.Use for all loop to loop through the PL/SQL table
26.7.14.Change PL/SQL table element by index
26.7.15.Insert data in PL/SQL table to a real table
26.7.16.The COUNT Table Attribute
26.7.17.Uses the COUNT method to display the number of rows contained in an index-by table
26.7.18.The DELETE Table Attribute
26.7.19.The EXISTS Table Attribute
26.7.20.FIRST and LAST Table Attributes
26.7.21.NEXT and PRIOR Table Attributes
26.7.22.Using INDEX BY BINARY_INTEGER
26.7.23.Indexing Associative Arrays
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