в 13:45, 26 мая 2010

2010-05-26T13:45:19Z

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2010-05-26T09:59:29Z

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==Construct a null element nested table type in the database, then extends it one element at a time.==



<source lang="sql">

SQL> SET ECHO ON
SQL> SET SERVEROUTPUT ON SIZE 1000000
SQL>
SQL>
SQL> CREATE OR REPLACE TYPE charArrayType
2 AS TABLE OF VARCHAR2(5 CHAR);
3 /
Type created.
SQL>
SQL> DECLARE
2
3
4 charArray charArrayType := charArrayType(NULL,NULL,NULL);
5
6 BEGIN
7 FOR i IN 1..3 LOOP
8 dbms_output.put ("charArray Varray:"||i);
9 dbms_output.put_line(","||charArray(i));
10
11 END LOOP;
12 charArray(1) := "Ace";
13 charArray(2) := "Two";
14 charArray(3) := "Three";
15
16 FOR i IN 1..3 LOOP
17 dbms_output.put_line("charArray :"||i||", "||charArray(i));
18 END LOOP;
19
20 END;
21 /
charArray Varray:1,
charArray Varray:2,
charArray Varray:3,
charArray :1, Ace
charArray :2, Two
charArray :3, Three
PL/SQL procedure successfully completed.
SQL>

</source>

==Reference varchar table by index==



<source lang="sql">

SQL>
SQL> declare
2 myName dbms_sql.varchar2_table;
3 begin
4 myName(1) := "W";
5 myName(2) := "J";
6 myName(3) := "C";
7
8 for i in 1 .. myName.COUNT loop
9 dbms_output.put_line("Name (" || i || ") is " || myName(i));
10 end loop;
11 end;
12 /
Name (1) is W
Name (2) is J
Name (3) is C
PL/SQL procedure successfully completed.
SQL>

</source>

==table of varchar2(200) index by binary_integer==



<source lang="sql">

SQL>
SQL>
SQL> CREATE TABLE EMP (EMPNO NUMBER(4) NOT NULL,
2 ENAME VARCHAR2(10),
3 JOB VARCHAR2(9),
4 MGR NUMBER(4),
5 HIREDATE DATE,
6 SAL NUMBER(7, 2),
7 COMM NUMBER(7, 2),
8 DEPTNO NUMBER(2));
Table created.
SQL>
SQL> INSERT INTO EMP VALUES (7369, "SMITH", "CLERK", 7902, TO_DATE("17-DEC-1980", "DD-MON-YYYY"), 800, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES (7499, "ALLEN", "SALESMAN", 7698, TO_DATE("20-FEB-1981", "DD-MON-YYYY"), 1600, 300, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7521, "WARD", "SALESMAN", 7698, TO_DATE("22-FEB-1981", "DD-MON-YYYY"), 1250, 500, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7566, "JONES", "MANAGER", 7839, TO_DATE("2-APR-1981", "DD-MON-YYYY"), 2975, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES (7654, "MARTIN", "SALESMAN", 7698,TO_DATE("28-SEP-1981", "DD-MON-YYYY"), 1250, 1400, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7698, "BLAKE", "MANAGER", 7839,TO_DATE("1-MAY-1981", "DD-MON-YYYY"), 2850, NULL, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7782, "CLARK", "MANAGER", 7839,TO_DATE("9-JUN-1981", "DD-MON-YYYY"), 2450, NULL, 10);
1 row created.
SQL> INSERT INTO EMP VALUES (7788, "SCOTT", "ANALYST", 7566,TO_DATE("09-DEC-1982", "DD-MON-YYYY"), 3000, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES (7839, "KING", "PRESIDENT", NULL,TO_DATE("17-NOV-1981", "DD-MON-YYYY"), 5000, NULL, 10);
1 row created.
SQL> INSERT INTO EMP VALUES (7844, "TURNER", "SALESMAN", 7698,TO_DATE("8-SEP-1981", "DD-MON-YYYY"), 1500, 0, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7876, "ADAMS", "CLERK", 7788,TO_DATE("12-JAN-1983", "DD-MON-YYYY"), 1100, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES (7900, "JAMES", "CLERK", 7698,TO_DATE("3-DEC-1981", "DD-MON-YYYY"), 950, NULL, 30);
1 row created.
SQL> INSERT INTO EMP VALUES (7902, "FORD", "ANALYST", 7566,TO_DATE("3-DEC-1981", "DD-MON-YYYY"), 3000, NULL, 20);
1 row created.
SQL> INSERT INTO EMP VALUES (7934, "MILLER", "CLERK", 7782,TO_DATE("23-JAN-1982", "DD-MON-YYYY"), 1300, NULL, 10);
1 row created.
SQL>
SQL>
SQL>
SQL> set serveroutput on
SQL>
SQL> declare
2 type myTextTableType is table of varchar2(200)
3 index by binary_integer;
4
5 myText_table myTextTableType;
6 myIndex number;
7 begin
8 for emp_rec in (select * from emp) loop
9 myText_table(emp_rec.empno) := emp_rec.ename;
10 end loop;
11
12 myIndex := myText_table.first;
13 loop
14 exit when myIndex is null;
15 dbms_output.put_line(myIndex ||":"|| myText_table(myIndex));
16 myIndex := myText_table.next(myIndex);
17 end loop;
18 end;
19 /
7369:SMITH
7499:ALLEN
7521:WARD
7566:JONES
7654:MARTIN
7698:BLAKE
7782:CLARK
7788:SCOTT
7839:KING
7844:TURNER
7876:ADAMS
7900:JAMES
7902:FORD
7934:MILLER
PL/SQL procedure successfully completed.
SQL>
SQL> drop table emp;
Table dropped.
SQL>
SQL>

</source>

==Table of varchar2: first, next and last==



<source lang="sql">

SQL>
SQL> -- create demo table
SQL> create table Employee(
2 ID VARCHAR2(4 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 /
1 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 /
1 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 /
1 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 /
1 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 /
1 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 /
1 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 /
1 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 /
1 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
8 rows selected.
SQL>
SQL>
SQL> -- first next last
SQL>
SQL> set serverout on
SQL>
SQL> declare
2 type myTextTableType is table of varchar2(200) index by binary_integer;
3
4 myTable myTextTableType;
5 myIndex number;
6 begin
7 for myEmployee in (select * from employee) loop
8 myTable(myEmployee.id) := myEmployee.first_name;
9 end loop;
10
11 myIndex := myTable.first;
12 loop
13 exit when myIndex is null;
14 dbms_output.put_line(myIndex ||":"|| myTable(myIndex));
15 myIndex := myTable.next(myIndex);
16 end loop;
17 end;
18 /
1:Jason
2:Alison
3:James
4:Celia
5:Robert
6:Linda
7:David
8:James
PL/SQL procedure successfully completed.
SQL>
SQL>
SQL>
SQL>
SQL>
SQL> -- clean the table
SQL> drop table Employee
2 /
Table dropped.
SQL>
SQL>
SQL>

</source>

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Oracle PL/SQL/PL SQL/Varchar Table - История изменений

в 13:45, 26 мая 2010

Admin: 1 версия