oracle 怎么把表导出csv
oracle 如何把表导出csv
CREATE OR REPLACE PROCEDURE SQL_TO_CSV
(
P_QUERY IN VARCHAR2, -- PLSQL文
P_DIR IN VARCHAR2, -- 导出的文件放置目录
P_FILENAME IN VARCHAR2 -- CSV名
)IS L_OUTPUT UTL_FILE.FILE_TYPE;
L_THECURSOR INTEGER DEFAULT DBMS_SQL.OPEN_CURSOR;
L_COLUMNVALUE VARCHAR2(4000);
L_STATUS INTEGER;
L_COLCNT NUMBER := 0;
L_SEPARATOR VARCHAR2(1);
L_DESCTBL DBMS_SQL.DESC_TAB;
P_MAX_LINESIZE NUMBER := 32000;
BEGIN --OPEN FILE
L_OUTPUT := UTL_FILE.FOPEN(P_DIR, P_FILENAME, ‘W’, P_MAX_LINESIZE);
--DEFINE DATE FORMAT
EXECUTE IMMEDIATE ‘ALTER SESSION SET NLS_DATE_FORMAT=’’YYYY-MM-DD HH24:MI:SS’’’;
--OPEN CURSOR
DBMS_SQL.PARSE( L_THECURSOR, P_QUERY, DBMS_SQL.NATIVE );
DBMS_SQL.DESCRIBE_COLUMNS( L_THECURSOR, L_COLCNT, L_DESCTBL );
--DUMP TABLE COLUMN NAME
FOR I IN 1 .. L_COLCNT LOOP
UTL_FILE.PUT( L_OUTPUT, L_SEPARATOR || ‘”’ || L_DESCTBL(I).COL_NAME || ‘”’ );
DBMS_SQL.DEFINE_COLUMN( L_THECURSOR, I, L_COLUMNVALUE, 4000 );
L_SEPARATOR := ‘,’;
END LOOP;
UTL_FILE.NEW_LINE( L_OUTPUT );
--EXECUTE THE QUERY STATEMENT
L_STATUS := DBMS_SQL.EXECUTE(L_THECURSOR);
--DUMP TABLE COLUMN VALUE
WHILE ( DBMS_SQL.FETCH_ROWS(L_THECURSOR) > 0 ) LOOP
L_SEPARATOR := ‘’;
FOR I IN 1 .. L_COLCNT LOOP
DBMS_SQL.COLUMN_VALUE( L_THECURSOR, I, L_COLUMNVALUE );
UTL_FILE.PUT( L_OUTPUT, L_SEPARATOR || ‘”’ ||
TRIM(BOTH ‘ ‘ FROM REPLACE(L_COLUMNVALUE,’”’,’””’)) || ‘”’);
L_SEPARATOR := ‘,’;
END LOOP;
UTL_FILE.NEW_LINE( L_OUTPUT );
END LOOP;
--CLOSE CURSOR
DBMS_SQL.CLOSE_CURSOR(L_THECURSOR);
--CLOSE FILE
UTL_FILE.FCLOSE( L_OUTPUT );
EXCEPTION WHEN OTHERS THEN
RAISE;
END;