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CREATE TABLESPACE mytablespace DATAFILE
'F:\oracle\product\10.2.0\oradata\myoracle\MYTABLESPACE01.DBF' SIZE 500M AUTOEXTEND ON NEXT
100M MAXSIZE UNLIMITED
LOGGING
PERMANENT
EXTENT MANAGEMENT LOCAL AUTOALLOCATE
BLOCKSIZE 8K
SEGMENT SPACE MANAGEMENT MANUAL
FLASHBACK ON;
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CREATE USER ECC_NOTE IDENTIFIED BY sys
PROFILE DEFAULT
DEFAULT TABLESPACE mytablespace
TEMPORARY TABLESPACE temp
ACCOUNT UNLOCK;
GRANT UNDER ANY TABLE TO ECC_NOTE WITH ADMIN OPTION;
GRANT UNDER ANY TYPE TO ECC_NOTE WITH ADMIN OPTION;
GRANT UNDER ANY VIEW TO ECC_NOTE WITH ADMIN OPTION;
GRANT "DBA" TO ECC_NOTE WITH ADMIN OPTION;
GRANT "OLAP_DBA" TO ECC_NOTE WITH ADMIN OPTION;
GRANT "OLAP_USER" TO ECC_NOTE WITH ADMIN OPTION;
GRANT "SELECT_CATALOG_ROLE" TO ECC_NOTE WITH ADMIN OPTION;
ALTER USER ECC_NOTE DEFAULT ROLE "DBA", "OLAP_DBA", "OLAP_USER", "SELECT_CATALOG_ROLE";
ALTER USER test QUOTA UNLIMITED ON ECC_NOTE;
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1. ASCII
·µ»ØÓëÖ¸¶¨µÄ×Ö·û¶ÔÓ¦µÄÊ®½øÖÆÊý;
SQL> select ascii(A) A,ascii(a) a,ascii(0) zero,ascii( ) space from dual;
A A ZERO SPACE
--------- --------- --------- ---------
65 97 48 32
2. CHR
¸ø³öÕûÊý,·µ»Ø¶ÔÓ¦µÄ×Ö·û;
SQL> select chr(54740) zhao,chr(65) chr65 from dual;
ZH C
-- ......
The RETURNING INTO clause allows us to return column values for rows affected by DML statements. The following test table is used to demonstrate this clause.
DROP TABLE t1;
DROP SEQUENCE t1_seq;
CREATE TABLE t1 (
id NUMBER(10),
description VARCHAR2(50),
CONSTRAINT t1_pk PRIMARY KEY (id)
......
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select nvl(sum(t.dwxhl),1) from tb_jhde t where zydm=-1ÕâÀï¹ØÐĵÄnvlµÄÓ÷¨£¬nvl£¨arg,value£©´ú±íÈç¹ûÇ°ÃæµÄargµÄֵΪnullÄÇô·µ»ØµÄֵΪºóÃæµÄvalue
Èç: NVL(a,b)¾ÍÊÇÅжÏaÊÇ·ñÊÇNULL,Èç¹û²»ÊÇ·µ»ØaµÄÖµ£¬Èç¹ ......
Ô´ÌùµØÖ·:http://topic.csdn.net/u/20090520/15/08a03d2e-a537-4c06-b79a-7e2f7ed5f898.html
1,
ASCII
·µ»ØÓëÖ¸¶¨µÄ×Ö·û¶ÔÓ¦µÄÊ®½øÖÆÊý;
SQL> select ascii(A) A,ascii(a) a,ascii(0) zero,ascii( ) space from dual;
A A ZERO SPACE
--------- --------- --------- ---------
65 97 48 32
2. CHR
......