本篇文章主要介绍了"oracle 通过存储过程把表生成csv"，主要涉及到方面的内容，对于其他数据库感兴趣的同学可以参考一下：
CREATE OR REPLACE PROCEDURE SP_SQL_TO_CSV(P_QUERY IN VARCHAR2, -- PLSQL文 ...
CREATE OR REPLACE PROCEDURE SP_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);
/*
--执行语句 需要dba或者sys权限
-- 创建存放文件的目录
CREATE OR REPLACE DIRECTORY MYDIR AS 'F:\backup\dir_wms\';
-- GRANT all on directory MYDIR to WMS_DG;
-- 执行块
begin
SP_sql_to_csv('select * from T_ZXZC_TMP ','MYDIR','T_ZXZC_TMP.CSV');
end;
*/
EXCEPTION
WHEN OTHERS THEN
RAISE;
END;
==============================================================================================================
--执行语句 需要dba或者sys权限
-- 创建存放文件的目录
CREATE OR REPLACE DIRECTORY MYDIR AS 'D:\aaa\';
-- GRANT all on directory MYDIR to WMS_DG;
=================================================================================================================
SELECT 'call SP_SQL_TO_CSV(''select * from ' ||T.TABLE_NAME ||
''',''MYDIR''' || ',''' || T.TABLE_NAME ||
'.csv'');'
FROM user_TABLES T where t.TABLE_NAME like 'V_%'
=====================================================================
以上就介绍了oracle 通过存储过程把表生成csv，包括了方面的内容，希望对其他数据库有兴趣的朋友有所帮助。
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