SQL MERGE
DB CAFE
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- DBA { Oracle DBA 명령어 > DBA 초급 과정 > DBA 고급 과정 }
- 튜닝 { 오라클 튜닝 목록 }
- 모델링 { 데이터 모델링 가이드 }
오라클 MERGE 문 샘플 =[편집]
MERGE INTO TB_TUNE_SQL_STATS T
USING (SELECT 1 SNAP_ID
, SQL_TEXT, SQL_FULLTEXT, SQL_ID, LAST_ACTIVE_TIME, LAST_ACTIVE_CHILD_ADDRESS
, PLAN_HASH_VALUE, PARSE_CALLS, DISK_READS, DIRECT_WRITES, BUFFER_GETS
, ROWS_PROCESSED, SERIALIZABLE_ABORTS, FETCHES, EXECUTIONS, END_OF_FETCH_COUNT
, LOADS, VERSION_COUNT, INVALIDATIONS, CPU_TIME
, ELAPSED_TIME, AVG_HARD_PARSE_TIME, APPLICATION_WAIT_TIME, CONCURRENCY_WAIT_TIME
, USER_IO_WAIT_TIME, PLSQL_EXEC_TIME, JAVA_EXEC_TIME, SORTS, SHARABLE_MEM, TOTAL_SHARABLE_MEM
, TYPECHECK_MEM, IO_INTERCONNECT_BYTES, PHYSICAL_READ_REQUESTS, PHYSICAL_READ_BYTES
, PHYSICAL_WRITE_REQUESTS, PHYSICAL_WRITE_BYTES
FROM V$SQLSTATS
WHERE LAST_ACTIVE_TIME BETWEEN SYSDATE-1/24/60*10 AND SYSDATE -- 10분전 ([TODO] SNAPID 시간으로 변경)
) S
ON (T.SQL_ID = S.SQL_ID
)
WHEN MATCHED THEN
-- SQL_ID가 같으면 업데이트
UPDATE SET T.SQL_TEXT = S.SQL_TEXT , T.SQL_FULLTEXT = S.SQL_FULLTEXT , T.LAST_ACTIVE_TIME = S.LAST_ACTIVE_TIME , T.LAST_ACTIVE_CHILD_ADDRESS = S.LAST_ACTIVE_CHILD_ADDRESS , T.PLAN_HASH_VALUE = S.PLAN_HASH_VALUE , T.PARSE_CALLS = S.PARSE_CALLS , T.DISK_READS = S.DISK_READS , T.DIRECT_WRITES = S.DIRECT_WRITES , T.BUFFER_GETS = S.BUFFER_GETS , T.ROWS_PROCESSED = S.ROWS_PROCESSED , T.SERIALIZABLE_ABORTS = S.SERIALIZABLE_ABORTS , T.FETCHES = S.FETCHES , T.EXECUTIONS = S.EXECUTIONS , T.END_OF_FETCH_COUNT = S.END_OF_FETCH_COUNT , T.LOADS = S.LOADS , T.VERSION_COUNT = S.VERSION_COUNT , T.INVALIDATIONS = S.INVALIDATIONS , T.CPU_TIME = S.CPU_TIME , T.ELAPSED_TIME = S.ELAPSED_TIME , T.APPLICATION_WAIT_TIME = S.APPLICATION_WAIT_TIME , T.CONCURRENCY_WAIT_TIME = S.CONCURRENCY_WAIT_TIME , T.USER_IO_WAIT_TIME = S.USER_IO_WAIT_TIME , T.PLSQL_EXEC_TIME = S.PLSQL_EXEC_TIME , T.JAVA_EXEC_TIME = S.JAVA_EXEC_TIME , T.SORTS = S.SORTS
WHEN NOT MATCHED THEN
-- SQL_ID가 없으면 인서트
INSERT (SNAP_ID,SQL_TEXT ,SQL_FULLTEXT ,SQL_ID ,LAST_ACTIVE_TIME ,LAST_ACTIVE_CHILD_ADDRESS ,PLAN_HASH_VALUE ,PARSE_CALLS ,DISK_READS ,DIRECT_WRITES ,BUFFER_GETS ,ROWS_PROCESSED ,SERIALIZABLE_ABORTS ,FETCHES ,EXECUTIONS ,END_OF_FETCH_COUNT ,LOADS ,VERSION_COUNT ,INVALIDATIONS ,CPU_TIME ,ELAPSED_TIME ,APPLICATION_WAIT_TIME ,CONCURRENCY_WAIT_TIME ,USER_IO_WAIT_TIME ,PLSQL_EXEC_TIME ,JAVA_EXEC_TIME ,SORTS)
VALUES (S.SNAP_ID,S.SQL_TEXT ,S.SQL_FULLTEXT ,S.SQL_ID ,S.LAST_ACTIVE_TIME ,S.LAST_ACTIVE_CHILD_ADDRESS ,S.PLAN_HASH_VALUE ,S.PARSE_CALLS ,S.DISK_READS ,S.DIRECT_WRITES ,S.BUFFER_GETS ,S.ROWS_PROCESSED ,S.SERIALIZABLE_ABORTS ,S.FETCHES ,S.EXECUTIONS ,S.END_OF_FETCH_COUNT ,S.LOADS ,S.VERSION_COUNT ,S.INVALIDATIONS ,S.CPU_TIME ,S.ELAPSED_TIME ,S.APPLICATION_WAIT_TIME ,S.CONCURRENCY_WAIT_TIME ,S.USER_IO_WAIT_TIME ,S.PLSQL_EXEC_TIME ,S.JAVA_EXEC_TIME ,S.SORTS)
;