ORACLE 테이블 컬럼
DB CAFE
- DBA { Oracle DBA 명령어 > DBA 초급 과정 > DBA 고급 과정 }
- 튜닝 { 오라클 튜닝 목록 }
- 모델링 { 데이터 모델링 가이드 }
테이블 정보[편집]
-
- 32 테이블 생성일자 보기
<syntaxhighlight lang="sql"> SELECT SUBSTRB(OBJECT_NAME, 1, 15) AS OBJECT_NAME
, CREATED , LAST_DDL_TIME , TIMESTAMP , STATUS
FROM USER_OBJECTS WHERE OBJECT_NAME = UPPER('&테이블명') AND OBJECT_TYPE = 'TABLE'; </syntaxhighlight>
-
- 33 테이블의 크기 및 블록 보기
<syntaxhighlight lang="sql"> SELECT SUBSTR(SEGMENT_NAME, 1, 20), BYTES, BLOCKS FROM USER_SEGMENTS WHERE SEGMENT_NAME = UPPER('&테이블명'); </syntaxhighlight>
-
- 34 파티션 테이블의 파티션 범위 보기
<syntaxhighlight lang="sql"> SELECT SUBSTRB(PARTITION_NAME, 1, 30) AS PARTITION_NAME, SUBSTRB(TABLESPACE_NAME, 1, 30) AS TABLESPACE_NAME, HIGH_VALUE FROM USER_TAB_PARTITIONS WHERE TABLE_NAME = UPPER('&테이블명'); </syntaxhighlight>
-
- 35 CONSTRAINT 보기
<syntaxhighlight lang="sql"> SELECT DECODE(A.CONSTRAINT_TYPE, 'P', 'Primary Key', 'R', 'Foreign Key', 'C', 'Table Check', 'V', 'View Check', 'U', 'Unique', '?')
AS "유형" , SUBSTRB(A.CONSTRAINT_NAME, 1, 25) AS CONSTRAINT_NAME , B.POSITION , SUBSTRB(B.COLUMN_NAME, 1, 25) AS COLUMN_NAME
FROM DBA_CONSTRAINTS A
, DBA_CONS_COLUMNS B
WHERE A.CONSTRAINT_NAME = B.CONSTRAINT_NAME AND A.OWNER = 'E_LUCIS' AND A.TABLE_NAME = UPPER('&테이블명') ORDER BY 1, 2, 3; </syntaxhighlight>
-
- 36 특정 테이블의 스키마 구조 확인
<syntaxhighlight lang="sql"> /*
보통 토드나 기타 오라클 클라이언트 툴을 이용해서 테이블 구조를 확인 해도 됩니다. 하지만 수많은 테이블을 전체 보고 싶을 경우 아래 쿼리를 이용하면 한번에 확인이 가능합니다.
- /
--: 관리자용
SELECT OWNER
, TABLE_NAME , COLUMN_NAME , PK , COLUMN_NAME , DATA_TYPE || '( ' || NVL(DATA_TYPE_2, DATA_LENGTH) || ' )' DATA_TYPE , NULLABLE , COMMENTS
FROM (SELECT A.OWNER
, A.TABLE_NAME , A.COLUMN_ID , B.POSITION PK , A.COLUMN_NAME , A.DATA_TYPE , A.DATA_PRECISION || DECODE(A.DATA_SCALE, NULL, NULL, ',' || A.DATA_SCALE) DATA_TYPE_2 , A.DATA_LENGTH , A.DATA_PRECISION , A.DATA_SCALE , A.NULLABLE , A.COMMENTS , ROW_NUMBER() OVER (PARTITION BY A.OWNER, A.TABLE_NAME, A.COLUMN_ID ORDER BY A.COLUMN_ID, B.POSITION) RN FROM (SELECT COL.OWNER , COL.TABLE_NAME , COL.COLUMN_ID , COL.COLUMN_NAME , COL.DATA_TYPE , COL.DATA_LENGTH , COL.DATA_PRECISION , COL.DATA_SCALE , COL.NULLABLE , COM.COMMENTS FROM DBA_TAB_COLUMNS COL , DBA_COL_COMMENTS COM WHERE COL.COLUMN_NAME = COM.COLUMN_NAME AND COL.OWNER = COM.OWNER AND COL.TABLE_NAME = COM.TABLE_NAME AND COM.OWNER =:IN_OWNER AND COM.TABLE_NAME LIKE:IN_TABLE_NAME || '%') A , DBA_CONS_COLUMNS B WHERE B.TABLE_NAME(+) = A.TABLE_NAME AND B.COLUMN_NAME(+) = A.COLUMN_NAME) X
WHERE X.RN = 1 ORDER BY X.TABLE_NAME, X.COLUMN_ID; </syntaxhighlight>
--: 일반 사용자 용
<syntaxhighlight lang="sql"> SELECT TABLE_NAME , COLUMN_NAME , PK , COLUMN_NAME , DATA_TYPE || '( ' || NVL(DATA_TYPE_2, DATA_LENGTH) || ' )' DATA_TYPE , NULLABLE , COMMENTS
FROM (SELECT A.TABLE_NAME , A.COLUMN_ID , B.POSITION PK , A.COLUMN_NAME , A.DATA_TYPE , A.DATA_PRECISION || DECODE(A.DATA_SCALE, NULL, NULL, ',' || A.DATA_SCALE) DATA_TYPE_2 , A.DATA_LENGTH , A.DATA_PRECISION , A.DATA_SCALE , A.NULLABLE , A.COMMENTS , ROW_NUMBER() OVER (PARTITION BY A.TABLE_NAME, A.COLUMN_ID ORDER BY A.COLUMN_ID, B.POSITION) RN FROM (SELECT COL.TABLE_NAME , COL.COLUMN_ID , COL.COLUMN_NAME , COL.DATA_TYPE , COL.DATA_LENGTH , COL.DATA_PRECISION , COL.DATA_SCALE , COL.NULLABLE , COM.COMMENTS FROM USER_TAB_COLUMNS COL , USER_COL_COMMENTS COM WHERE COL.COLUMN_NAME = COM.COLUMN_NAME AND COL.TABLE_NAME = COM.TABLE_NAME AND COM.TABLE_NAME LIKE:IN_TABLE_NAME || '%') A , USER_CONS_COLUMNS B WHERE B.TABLE_NAME(+) = A.TABLE_NAME AND B.COLUMN_NAME(+) = A.COLUMN_NAME ) X WHERE X.RN = 1 ORDER BY X.TABLE_NAME, X.COLUMN_ID;
</syntaxhighlight>
-
- 37 사용자별 오브젝트 수
<syntaxhighlight lang="sql"> SELECT OWNER AS "OWNER"
, SUM(DECODE(OBJECT_TYPE, 'TABLE', 1, 0)) AS "TABLE" , SUM(DECODE(OBJECT_TYPE, 'INDEX', 1, 0)) AS "INDEX" , SUM(DECODE(OBJECT_TYPE, 'SYNONYM', 1, 0)) AS "SYNONYMS" , SUM(DECODE(OBJECT_TYPE, 'SEQUENCE', 1, 0)) AS "SEQUENCES" , SUM(DECODE(OBJECT_TYPE, 'VIEW', 1, 0)) AS "VIEWS" , SUM(DECODE(OBJECT_TYPE, 'CLUSTER', 1, 0)) AS "CLUSTERS" , SUM(DECODE(OBJECT_TYPE, 'DATABASE LINK', 1, 0)) AS "DBLINKS" , SUM(DECODE(OBJECT_TYPE, 'PACKAGE', 1, 0)) AS "PACKAGES" , SUM(DECODE(OBJECT_TYPE, 'PACKAGE BODY', 1, 0)) AS "PACKAGE_BODY" , SUM(DECODE(OBJECT_TYPE, 'PROCEDURE', 1, 0)) AS "PROCEDURES" , SUM(DECODE(OBJECT_TYPE, 'FUNCTION', 1, 0)) AS "FUNCTION"
FROM DBA_OBJECTS GROUP BY OWNER; </syntaxhighlight>
-
- 59 상호 DB간에 컬럼 이름 비교
<syntaxhighlight lang="sql">
/*
양쪽 DB에서 사용하는 테이블 중에서 컬럼 이름 다른 항목을 찾는다.
- /
SELECT A.TABLE_NAME
, A.COLUMN_NAME , A.COLUMN_ID , A.DATA_TYPE || '(' || A.DATA_LENGTH || ')' DATA_TYPE
FROM USER_TAB_COLUMNS@LINK_ESTDB A WHERE A.TABLE_NAME =:IN_TABLE_NAME AND NOT EXISTS
(SELECT 'X' FROM USER_TAB_COLUMNS B WHERE B.TABLE_NAME = A.TABLE_NAME AND B.COLUMN_NAME = A.COLUMN_NAME);
</syntaxhighlight>
<syntaxhighlight lang="sql"> SELECT A.TABLE_NAME, A.COLUMN_NAME, A.COLUMN_ID FROM USER_TAB_COLUMNS@LINK_ESTDB A WHERE A.TABLE_NAME =:IN_TABLE_NAME MINUS SELECT A.TABLE_NAME, A.COLUMN_NAME, A.COLUMN_ID FROM USER_TAB_COLUMNS A WHERE A.TABLE_NAME =:IN_TABLE_NAME </syntaxhighlight>