Oracle Database 12c new features for the developers.

Oracle 12c VBİS-də proqramçılar üçün yeniliklər
Ramin Orucov http://raminorucov.wordpress.com
SCJP 6, OCE Java EE 6 Web Component Developer
http://www.azeroug.org

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Özüm haqda
Şənbə, 14 Sentyabr 2013
Azercell Telekom
İKT/Daxili proqramların yaradılması
qrupunun rəhbəri
Qafqaz Universiteti
Java, Java web, Android
proqramlaşdırma üzrə müəllim
Ramin Orucov

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Oracle 12c VBİS
Oracle 9i – internet
Oracle 10g/11g – grid
Oracle 12c - cloud
http://www.oracle.com/us/products/database
/overview/index.html
http://www.oracle.com/technetwork/database
/plug-into-cloud-wp-12c-1896100.pdf
Ramin Orucov

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SQL yenilikləri
 Sütun default value üçün SEQUENCE qiyməti
 İDENTİTY sütunu
 VARCHAR2, NVARCHAR2 32K limit
 SQL sorğularında LİMİT, OFFSET dəstəyi
 Görünməz(invisible) sütun dəstəyi
 SQL WITH ifadəsindən PL/SQL funksiya
imkanı
Ramin Orucov

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Sütun default value sequence
create sequence test_seq
start with 1
increment by 1;
create table test_table(
id number default test_seq.nextval primary key
);
http://docs.oracle.com/cd/E16655_01/server.121/
e17209/statements_7002.htm#SQLRF54458
Ramin Orucov

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IDENTITY sütunu
MySQL,MS SQL Server auto increment/identity
create table test_table(
id number generated by default on null as identity,
name varchar2(10)
)
insert into test_table(name) values(‘ramin’)
insert into test_table(id,name) values(null, ‘ramin’)
http://docs.oracle.com/cd/E16655_01/gateways.121/e
22508/migr_tools_feat.htm#DRDAA109
Ramin Orucov

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VARCHAR2, NVARCHAR2 32K limit
32767 simvol dəstəyi
VARCHAR2, NVARCHAR2, RAW
Initialization param
MAX_STRING_SIZE = EXTENDED
e17209/sql_elements001.htm#SQLRF55623
Ramin Orucov

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SQL sorğularında Limit, Offset dəstəyi
Şənbə, 14 Sentyabr 2013 Ramin Orucov
select *
from (
select rownum rn, id, e.*
from employees e
)
where rn between 1 AND 10
order by 1;

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SELECT employee_id, last_name
FROM employees
ORDER BY salary
FETCH FIRST 10 ROWS ONLY;
SELECT employee_id, last_name
FROM employees
ORDER BY salary
OFFSET 5 ROWS FETCH NEXT 10 ROWS ONLY;
Ramin Orucov

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Min maaş alan işçilərin 5% + sonuncu sətirdəkinə
bərabər maaş alan bütün işçilər
SELECT employee_id, last_name, salary
FROM employees
ORDER BY salary
FETCH FIRST 5 PERCENT ROWS WITH TIES;
e17209/statements_10002.htm#SQLRF55636
Ramin Orucov

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Görünməz(invisible) sütun dəstəyi
create table app_user(
id number generated by default on null as
identity,
username varchar2(100) not null,
passwd varchar(100) invisible
);
select * from app_user;
e17636/tables.htm#ADMIN13866
Ramin Orucov

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SQL WITH ifadəsi PL/SQL funksiya
with
function sqr(p_num in number)
return number
is
begin
return p_num * p_num;
end;
select u.user_id, sqr(u.user_id) from all_users
where rownum <= 10;
2.5-3x dəfə performanslı
http://docs.oracle.com/cd/E16655_01/server.121/e17209/sRamin Orucov

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PL/SQL yenilikləri
 Prosedurdan cursor qaytarmaq
 ACCESSIBLE BY ilə paket qadağası
 Yeni UTL_CALL_STACK paketi
 JDBC üçün PL/SQL boolean və s. tip dəstəyi
 SQL kontekstdə PL/SQL tiplərinin istifadəsi
 Invoker right funksiyasına result cache dəstəyi
Ramin Orucov

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PL/SQL prosedurdan cursor qaytarmaq
create procedure get_customer_list
as
cur_customer sys_refcursor;
begin
open cur_customer for
select * from customer;
dbms_sql.return_result(cur_customer);
end get_customer_list;
http://docs.oracle.com/cd/E16655_01/java.121/e1
7657/getsta.htm#JJDBC29004
Ramin Orucov

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PL/SQL prosedurdan cursor qaytarmaq
String sql = “begin get_customer_list; end;”;
Connection con = datasource.getConnection();
PreparedStatement ps = con.prepareStatement();
ps.executeQuery(sql);
while(ps.getMoreResults()) {
ResultSet rs = ps.getResultSet();
while(rs.next()) {
… read columns
}
} Ramin Orucov

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ACCESSİBLE BY ilə paket qadağası
package pkg_api;
package pkg_api_utility;
pkg_api_utility paketi yalnız pkg_api daxilində
istifadə üçün nəzərdə tutulub, ayrılıqda istifadə
olunmamalıdır.
ACCESSİBLE BY
Ramin Orucov

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CREATE OR REPLACE PACKAGE pkg_api_utility
ACCESSIBLE BY (pkg_api)
IS
PROCEDURE h1;
PROCEDURE h2;
END pkg_api_utility;
CREATE OR REPLACE PACKAGE BODY pkg_api_utility
IS
PROCEDURE h1 IS
BEGIN
DBMS_OUTPUT.PUT_LINE('Helper procedure h1');
END;
PROCEDURE h2 IS
BEGIN
DBMS_OUTPUT.PUT_LINE('Helper procedure h2');
END;
END pkg_api_utility;
Ramin Orucov

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begin
pkg_api.p1;
pkg_api.p2;
end;
/
begin
pkg_api_utility.h1;
pkg_api_utility.h2;
end;
/
ORA-06550
PLS-00904: insufficient privilege to access object PKG_API_UTILITY
Ramin Orucov

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UTL_CALL_STACK paketi
DBMS_UTILITY paketindəki funksiyalar:
– FORMAT_CALL_STACK
– FORMAT_ERROR_STACK
– FORMAT_ERROR_BACKTRACE
UTL_CALLSTACK paketi
http://docs.oracle.com/cd/E16655_01/appdev.121/e17602/u_call_stac
k.htm#ARPLS74078
Ramin Orucov

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JDBC daha yaxşı PL/SQL tip dəstəyi
create or replace package TEST_PKG is
type V_TYP is varray(10) of varchar2(200);
type R_TYP is record(c1 pls_integer, c2 varchar2(100));
procedure VARR_PROC(p1 in V_TYP, p2 OUT V_TYP);
procedure REC_PROC(p1 in R_TYP, p2 OUT R_TYP);
end;
/
Ramin Orucov

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create or replace package body TEST_PKG is
procedure VARR_PROC(p1 in V_TYP, p2 OUT V_TYP) is
begin
p2 := p1;
end;
procedure REC_PROC(p1 in R_TYP, p2 OUT R_TYP) is
begin
p2 := p1;
end;
end;
Ramin Orucov

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CallableStatement cstmt = null;
try {
cstmt = conn.prepareCall("{ call TEST_PKG.VARR_PROC(?,?) }");
Array arr = ((OracleConnection)conn).createArray("TEST_PKG.V_TYP",
new String[]{"A", "B"});
cstmt.setArray(1, arr);
cstmt.registerOutParameter(2, Types.ARRAY, "TEST_PKG.V_TYP");
cstmt.execute();
//get PLSQL VARRAY type out parameter value
Array outArr = cstmt.getArray(2);
} catch( Exception e) {
e.printStackTrace();
}
Ramin Orucov

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try {
cstmt = conn.prepareCall("{ call TEST_PKG.REC_PROC(?,?) }");
//PLSQL RECORD type binding
Struct struct = conn.createStruct("TEST_PKG.R_TYP", new
Object[]{12345, "B"});
cstmt.setObject(1, struct);
cstmt.registerOutParameter(2, Types.STRUCT, "TEST_PKG.R_TYP");
cstmt.execute();
//get PLSQL RECORD type out parameter value
Struct outStruct = (Struct)cstmt.getObject(2);
} catch( Exception e) {
e.printStackTrace();
}
Ramin Orucov

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CREATE OR REPLACE PACKAGE PACK1 AS
TYPE EMPLOYEE_ROWTYPE_ARRAY IS TABLE OF
EMPLOYEES%ROWTYPE;
END PACK1;
CallableStatement cstmt = conn.prepareCall("BEGIN SELECT
* BULK COLLECT INTO :1 FROM EMPLOYEE; END;");
cstmt.registerOutParameter(1,OracleTypes.ARRAY,
"PACK1.EMPLOYEE_ROWTYPE_ARRAY");
cstmt.execute();
Array a = cstmt.getArray(1);
Ramin Orucov

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Qaynaqlar
 http://docs.oracle.com/cd/E16655_01/appde
v.121/e17622/release_changes.htm
 http://www.toadworld.com/platforms/oracle
/b/weblog/archive/2013/07/01/oracle-
database-12c-new-pl-sql-features.aspx
 http://docs.oracle.com/cd/E16655_01/java.1
21/e17657/apxref.htm#CHEIIJCC
 http://www.oracle-
base.com/articles/12c/with-clause-
enhancements-12cr1.php
Ramin Orucov

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Sizin suallarınız

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Son
Ramin Orucov
raminorujov@gmail.com
Mobil: 050 231 01 09
https://www.facebook.com/ramin.orucov
https://www.linkedin.com/in/raminorujov

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