标签：mysql oracle format formatting
我有Oracle数据库的结果如下：
1 Chi Phí Lương FA_Phan_Bo_Chi_Phi_Luong 8 JOHN 8 2015 (BLOB) FA_Phan_Bo_Chi_Phi_Luong_Final.csv 09-NOV-15 Đã Hoàn Thành
2 Tổng Hợp TimeSheet Nhân Viên FA_Tong_Hop_Timesheet 8 JOHN 8 2015 (BLOB) FA_Tong_Hop_Timesheet_COM_Final.csv 09-NOV-15 Đã Hoàn Thành
3 Tổng Hợp Doanh Thu FA_Tong_Hop_Doanh_Thu 8 JOHN 8 2015 (BLOB) FA_Tong_Hop_Doanh_Thu_Final.csv 09-NOV-15 Đã Hoàn Thành
4 Chi Phí Hoạt Động Công Ty FA_CP_Hoat_Dong 8 JOHN 8 2015 (BLOB) FA_CP_Hoat_Dong_Final.csv 09-NOV-15 Đã Hoàn Thành
5 Khấu Hao Máy Móc Thiết Bị FA_CP_Khau_Hao_Phan_Bo_MMTB 8 JOHN 8 2015 (BLOB) FA_CP_Khau_Hao_Phan_Bo_MMTB_Final.csv 09-NOV-15 Đã Hoàn Thành
如何将文本格式化为具有相同宽度列的表格？
解决方法:
如果您正在使用SQLPlus或TOAD或SQLNavigator或SQL * Developer等,请使用您正在使用的功能来很好地格式化输出.
如果您正在寻找纯数据库解决方案(没有客户端),我会使用DBMS_SQL.这是基本代码(如下).此版本只是将结果集写入DBMS_OUTPUT.您可以将其更改为您想要的任何内容.此外,您需要扩展它以处理NUMBER,DATE和VARCHAR2之外的数据类型.
DECLARE
l_rc SYS_REFCURSOR;
-- This is the procedure to format cursor output nicely
PROCEDURE dump_cursor( p_rc IN OUT SYS_REFCURSOR) IS
-- Dump the results of p_rc to log
l_cursor INTEGER;
l_column_count INTEGER;
l_column_descriptions sys.DBMS_SQL.desc_tab;
l_status INTEGER;
l_column_value VARCHAR2 (4000);
l_column_width NUMBER;
l_rec_count NUMBER := 0;
l_line VARCHAR2(4000);
FUNCTION get_length (l_column_def IN sys.DBMS_SQL.desc_rec)
RETURN NUMBER IS
l_width NUMBER;
BEGIN
l_width := l_column_def.col_max_len;
l_width :=
CASE l_column_def.col_type
WHEN 12 THEN /* DATE */
20
WHEN 2 THEN /* NUMBER */
10
ELSE l_width
END;
-- Don't display more than 256 characters of any one column
l_width := LEAST(256,GREATEST (l_width, l_column_def.col_name_len));
RETURN l_width;
END get_length;
BEGIN
EXECUTE IMMEDIATE 'alter session set nls_date_format=''DD-MON-YYYY HH24:MI:SS''';
l_cursor := sys.DBMS_SQL.TO_CURSOR_NUMBER(p_rc);
-- Describe columns
sys.DBMS_SQL.describe_columns (c => l_cursor, col_cnt => l_column_count, desc_t => l_column_descriptions);
l_line := '';
FOR i IN 1 .. l_column_count LOOP
l_column_width := get_length (l_column_descriptions (i));
l_line := l_line || RPAD (l_column_descriptions (i).col_name, l_column_width);
l_line := l_line || ' ';
DBMS_SQL.define_column (l_cursor, i, l_column_value, 4000);
END LOOP;
DBMS_OUTPUT.PUT_LINE(l_line);
l_line := '';
FOR i IN 1 .. l_column_count LOOP
l_column_width := get_length (l_column_descriptions (i));
l_line := l_line || RPAD ('-', l_column_width, '-');
l_line := l_line || ' ';
DBMS_SQL.define_column (l_cursor, i, l_column_value, 4000);
END LOOP;
DBMS_OUTPUT.PUT_LINE(l_line);
-- l_status := sys.DBMS_SQL.execute (l_cursor);
WHILE (sys.DBMS_SQL.fetch_rows (l_cursor) > 0) LOOP
l_rec_count := l_rec_count + 1;
l_line := '';
FOR i IN 1 .. l_column_count LOOP
DBMS_SQL.COLUMN_VALUE (l_cursor, i, l_column_value);
l_column_value := translate(l_column_value,chr(10), chr(200));
l_column_width := get_length (l_column_descriptions (i));
IF l_column_value IS NULL THEN
l_line := l_line || RPAD (' ', l_column_width);
ELSE
l_line := l_line || RPAD (l_column_value, l_column_width);
END IF;
l_line := l_line || ' ';
END LOOP;
DBMS_OUTPUT.PUT_LINE(l_line);
END LOOP;
IF l_rec_count = 0 THEN
DBMS_OUTPUT.PUT_LINE ('No data found.');
ELSE
DBMS_OUTPUT.PUT_LINE (l_rec_count || ' rows returned.');
END IF;
sys.DBMS_SQL.close_cursor (l_cursor);
EXECUTE IMMEDIATE 'alter session set nls_date_format=''DD-MON-YYYY''';
EXCEPTION
WHEN OTHERS THEN
EXECUTE IMMEDIATE 'alter session set nls_date_format=''DD-MON-YYYY''';
RAISE;
END dump_cursor;
-- This shows how to use it...
BEGIN
OPEN l_rc FOR SELECT object_id, object_name, object_type, last_ddl_time FROM dba_objects WHERE rownum <= 100;
dump_cursor(l_rc);
END;
标签：mysql,oracle,format,formatting 来源： https://codeday.me/bug/20190929/1832395.html
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