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        <description>JOIN 개념과 종류

	*  description : JOIN 개념과 종류
	*  author      : 연목구어
	*  email       : yspark@repia.com
	*  lastupdate  : 2020-03-17

참고 사이트

	*  &lt;https://www.codeproject.com/Articles/33052/Visual-Representation-of-SQL-Joins&gt; 사이트 번역본

설명

	*  이 문서에서는 시각적 방식으로 SQL 조인과 시각화 된 조인을 작성하는 가장 효율적인 방법에 대해 설명합니다.</description>
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        <title>wiki:database:database_note</title>
        <link>http://rwiki.repia.com/doku.php?id=wiki:database:database_note&amp;rev=1673603050&amp;do=diff</link>
        <description>Database Note

	*  Database 관련 용어</description>
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        <description>오라클 데이터 타입 변환

	*  description : 오라클 데이터 타입 변환
	*  author      : 연목구어
	*  email       : yspark@repia.com
	*  lastupdate  : 2020-03-17

설명

	*  MYSQL이나 MSSQL에서 대표적인 데이터 타입 변환함수는 CONVERT인데요. 오라클에서는 동작하지 않습니다.</description>
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        <title>wiki:database:erd</title>
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        <description>ERD

	*  description : ERD 개념
	*  author      : 천호동밤안개
	*  email       : jhgong@repia.com
	*  lastupdate  : 2020-09-18, 2022-08-11

Intro

Case Study

Term

ERD ( Entity Relationship Diagram ) :

'Entity 개체'와 'Relationship 관계'를 중점적으로 표시하는 데이터베이스 구조를 한 눈에 알아보기 위해 그려놓는 다이어그램</description>
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        <dc:date>2023-06-28T13:48:33+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>wiki:database:h2</title>
        <link>http://rwiki.repia.com/doku.php?id=wiki:database:h2&amp;rev=1687927713&amp;do=diff</link>
        <description>H2

	*  description : H2 데이터 베이스 사용 방법
	*  author      : 주레피
	*  email       : dhan@repia.com
	*  lastupdate  : 2020-04-02

DML

테이블 목록 확인하기


sql&gt; show tables;




컬럼 목록 확인하기


sql&gt; show columns from T_LOG_SYSTEM;</description>
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        <dc:date>2023-07-11T14:09:45+00:00</dc:date>
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        <title>wiki:database:mariadb</title>
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        <description>Mysql / MariaDB

	*  description : MariaDB, Mysql 관련 자료 정리
	*  author      : 주레피
	*  email       : dhan@repia.com
	*  lastupdate  : 2020-02-08

주의 사항

	*  대소문자 주의하는 것에 대해 고민하자

FAQ

	*   사용자 패스워드 변경하기</description>
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        <dc:date>2023-06-01T12:59:37+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>wiki:database:oracle</title>
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        <description>오라클, Oracle

	*  description : 오라클 관련 자료 정리
	*  author      : 주레피
	*  email       : dhan@repia.com
	*  lastupdate  : 2023-03-25

시작/종료

1.관리자 로그인(오라클 계정에서)
sqlplus &quot;/as sysdba&quot;
SQL&gt; 

2.리스너 종료(Shell에서 해야 됨)</description>
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        <description>PostgreSQL

	*  description : PostgreSQL 관련 내용
	*  author      : 주레피
	*  email       : dhan@repia.com
	*  lastupdate  : 2021-09-23

Intro

Case Study

Term

Tip

Troubleshooting

Ref

postgresql database</description>
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        <description>SQL

	*  description : SQL 관련 자료 등록
	*  author      : 주레피
	*  email       : dhan@repia.com
	*  lastupdate  : 2020-03-18

CASE...WHEN...THEN

[DBMS_Oracle] CASE..WHEN...THEN 

[MySQL] CASE 기본 사용법 


Date

Oracle : sysdate


    SELECT sysdate FROM dual;


MariaDB, Mysql : now()


    SELECT now() FROM dual;</description>
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