Question

我有10000列空格。我想删除所有10000列名称中的所有空格。

输入：the first column name。

输出：thefirstcolumnname

我尝试了什么：

select 'EXEC sp_rename '''+mytable+'.['+column_name+']'',''['+column_name+']'','''+replace(column_name,' ','')+'''' 
from information_schema.columns
where column_name like '% %'

然而，它不起作用。我怀疑我需要column_name进行一些更改，但我不确定如何。

错误：Invalid column name 'table name'.这意味着什么？

Answer 1

这就是你想要的：

SELECT 'EXEC sp_rename '''+QUOTENAME(TABLE_CATALOG)+'.'+QUOTENAME(TABLE_SCHEMA)+'.'+QUOTENAME(TABLE_NAME)+'.'+QUOTENAME(column_name)+''','''+REPLACE(column_name, ' ', '')+''',''COLUMN'''
FROM   information_schema.columns
WHERE  column_name LIKE '%'
      AND TABLE_NAME = 'your table name here';

Answer 2

这是生成这些查询的另一种方法。复制（并查看）并运行第三列的内容。

SELECT
   ta.name, co.name
    ,replace(replace(replace(replace('EXECUTE sp_rename ''<schemaName>.<tableName>.[<columnName>]'', ''<fixedColumnName>'', ''column'''
   ,'<schemaName>', schema_name(ta.schema_id))
   ,'<tableName>', ta.name)
   ,'<columnName>', co.name)
   ,'<fixedColumnName>', replace(co.Name, ' ', ''))
 from sys.tables ta
  inner join sys.columns co
   on co.object_id = ta.object_id
 where co.name like '% %'
 order by
   ta.name, co.name

Answer 3

create table t1 ([col] int,[another col] int,[yet another col] int);
create table t2 ([also a col] int,[col] int);

select      'exec sp_rename ''' + QUOTENAME(table_name) + '.' + QUOTENAME(column_name) +  ''',''' + replace(column_name,' ','') + ''',''column'''
from        information_schema.columns 
where       table_catalog = 'dmarkovitz'
        and column_name like '% %'

exec sp_rename '[t1].[another col]','anothercol','column'
exec sp_rename '[t1].[yet another col]','yetanothercol','column'
exec sp_rename '[t2].[also a col]','alsoacol','column'

select      table_name,column_name
from        information_schema.columns 
where       table_catalog = 'dmarkovitz'
        and table_name in ('t1','t2')

+------------+---------------+
| table_name | column_name   |
+------------+---------------+
| t1         | col           |
+------------+---------------+
| t1         | anothercol    |
+------------+---------------+
| t1         | yetanothercol |
+------------+---------------+
| t2         | alsoacol      |
+------------+---------------+
| t2         | col           |
+------------+---------------+

删除10000列SQL Server的列名称中的空格

3 个答案: