Sql server 将2条select语句与信息\u SCHEMA.Tables组合

嘿，我有以下两个SQL查询：

SELECT 
  TABLE_NAME 
FROM 
  Exceltest.INFORMATION_SCHEMA.Tables 
WHERE 
  TABLE_TYPE = 'BASE TABLE'

产生：

'AC Technician$'
'Drafting$'
'IT Tech$'
'Maintenance$'
'Carpentry$'
'Masonry$'
'Exercise$'

第二个问题：

SELECT 
  COUNT(TABLE_NAME) AS rollcount 
FROM 
  Exceltest.INFORMATION_SCHEMA.Tables 
WHERE 
  TABLE_TYPE = 'BASE TABLE'

这给了我7的值，这是正确的

现在，我希望将这两个问题合并到一个查询中。我试过：

SELECT 
  TABLE_NAME 
FROM 
  Exceltest.INFORMATION_SCHEMA.Tables 
WHERE 
  TABLE_TYPE = 'BASE TABLE'
UNION
SELECT 
  COUNT(TABLE_NAME) AS rollcount 
FROM 
  Exceltest.INFORMATION_SCHEMA.Tables 
WHERE 
  TABLE_TYPE = 'BASE TABLE'

但我得到的错误是：

将nvarchar值“AC Technician$”转换为数据类型int时，转换失败

---

任何帮助都会很好

如果要将输出放在同一列中：

SELECT 
  TABLE_NAME 
FROM 
  Exceltest.INFORMATION_SCHEMA.Tables 
WHERE 
  TABLE_TYPE = 'BASE TABLE'

UNION

SELECT 
  CAST(COUNT(TABLE_NAME) AS VARCHAR(20)) AS rollcount 
FROM 
  INFORMATION_SCHEMA.Tables 
WHERE 
  TABLE_TYPE = 'BASE TABLE'

用这个

SELECT 
  TABLE_NAME, 
  (
    SELECT 
      COUNT(TABLE_NAME) AS rollcount 
    FROM 
      INFORMATION_SCHEMA.Tables 
    WHERE 
      TABLE_TYPE = 'BASE TABLE'
  ) AS Cnt
FROM INFORMATION_SCHEMA.Tables
WHERE 
  TABLE_TYPE = 'BASE TABLE';


+----------------------------------------------------+------+
| TABLE_NAME                                         | Cnt  |
+----------------------------------------------------+------+
| ARCHIVE_GLOBAL_STATUS                              |   95 |
| HISTO_GLOBAL_STATUS                                |   95 |
| HISTO_SAVE                                         |   95 |
| PurgeInfo                                          |   95 |
| Stats                                              |   95 |

....

| socket_summary_by_instance                         |   95 |
| table_io_waits_summary_by_index_usage              |   95 |
| table_io_waits_summary_by_table                    |   95 |
| table_lock_waits_summary_by_table                  |   95 |
| threads                                            |   95 |
| users                                              |   95 |
+----------------------------------------------------+------+
95 rows in set (0.02 sec)

---

不完全正确，但使用您的第二个选择，我能够将它与我的第一个选择相结合，这很有效。谢谢Pinwar13！对您的帖子进行了正确的编辑。

SELECT 
  TABLE_NAME, 
  (
    SELECT 
      COUNT(TABLE_NAME) AS rollcount 
    FROM 
      INFORMATION_SCHEMA.Tables 
    WHERE 
      TABLE_TYPE = 'BASE TABLE'
  ) AS Cnt
FROM INFORMATION_SCHEMA.Tables
WHERE 
  TABLE_TYPE = 'BASE TABLE';


+----------------------------------------------------+------+
| TABLE_NAME                                         | Cnt  |
+----------------------------------------------------+------+
| ARCHIVE_GLOBAL_STATUS                              |   95 |
| HISTO_GLOBAL_STATUS                                |   95 |
| HISTO_SAVE                                         |   95 |
| PurgeInfo                                          |   95 |
| Stats                                              |   95 |

....

| socket_summary_by_instance                         |   95 |
| table_io_waits_summary_by_index_usage              |   95 |
| table_io_waits_summary_by_table                    |   95 |
| table_lock_waits_summary_by_table                  |   95 |
| threads                                            |   95 |
| users                                              |   95 |
+----------------------------------------------------+------+
95 rows in set (0.02 sec)