Oracle PL/SQL/PL SQL/Varchar Table
Содержание
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>
