Question

当我在sqlite文件中查看我的大表时，使用sqlite浏览器，如Firefox插件SQLite Manager或SQLite Browser，我看到列是根据它们的添加顺序显示的表（我一直在循环中添加新列）。

A   J   D   B
--- --- --- ---
..  ..  ..  ..

这是一种视觉上的烦恼，因为表非常大，有很多列，为了调试，我需要目视检查相邻的列。如何对表进行排序以便对列进行排序，如：

A   B   J   D
--- --- --- ---
..  ..  ..  ..

感谢。

Answer 1

SQLite没有内置机制来重新排序表的列。

您必须重新创建表格：

CREATE TABLE new_MyTable(A, B, J, D [...]);
INSERT INTO new_MyTable SELECT A, B, J, D FROM MyTable;
DROP TABLE MyTable;
ALTER TABLE new_MyTable RENAME TO MyTable;

Answer 2

您可以创建 DebugView ，并根据需要重新排序列...

CREATE TABLE ChorleyHandford (IMAGE_REF, DATE, LOCATION, NUMBER);
INSERT INTO "ChorleyHandford" VALUES('A10006','16/10/1990','RATCLIFFE POWER STATION CASTLE DONNINGTON POWER STATION','27');
INSERT INTO "ChorleyHandford" VALUES('A10017','25/10/1990','BROMLEY PARKS','17');
INSERT INTO "ChorleyHandford" VALUES('A10018','25/10/1990','CROSSWAYS BUSINESS PARK DARTFORD CROSSING BRIDGE CONSTRUCTION','20');
INSERT INTO "ChorleyHandford" VALUES('A10022','25/10/1990','THURROCK LAKESIDE','11');
INSERT INTO "ChorleyHandford" VALUES('A10057','01/11/1990','CLANDON REGIS SITE','6');

看看你有什么：

select * from CHORLEYHANDFORD;

A10006|16/10/1990|RATCLIFFE POWER STATION CASTLE DONNINGTON POWER STATION|27
A10017|25/10/1990|BROMLEY PARKS|17
A10018|25/10/1990|CROSSWAYS BUSINESS PARK DARTFORD CROSSING BRIDGE CONSTRUCTION|20
A10022|25/10/1990|THURROCK LAKESIDE|11
A10057|01/11/1990|CLANDON REGIS SITE|6

创建一个重新排序的视图，看看它现在的样子：

create view dbgview as select NUMBER, LOCATION, DATE, IMAGE_REF FROM CHORLEYHANDFORD;
select * from dbgview;

27|RATCLIFFE POWER STATION CASTLE DONNINGTON POWER STATION|16/10/1990|A10006
17|BROMLEY PARKS|25/10/1990|A10017
20|CROSSWAYS BUSINESS PARK DARTFORD CROSSING BRIDGE CONSTRUCTION|25/10/1990|A10018
11|THURROCK LAKESIDE|25/10/1990|A10022
6|CLANDON REGIS SITE|01/11/1990|A10057

sqlite如何排序列？

2 个答案: