Kombination auf 2 select-Anweisungen mit INFORMATION_SCHEMA.TABLES

Question

Hey alle habe ich die folgenden 2 SQL Abfrage:

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

Welche produziert:

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

Und die zweite Abfrage:

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

Was mir den Wert gibt, der richtig ist.

Jetzt möchte ich beide in eine Abfrage kombinieren. Ich habe versucht:

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' 

Aber ich habe den Fehler:

Fehler bei der Konvertierung, wenn der nvarchar Wert '' AC-Techniker $ '' in dem Datentyp int konvertieren.

Jede Hilfe wäre großartig!

Answer 1

Wenn Sie die Ausgabe in derselben Spalte haben:

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' 

Answer 2

SELECT 
TABLE_NAME 
FROM 
Exceltest.INFORMATION_SCHEMA.Tables 
WHERE 
TABLE_TYPE = 'BASE TABLE' 
UNION 
SELECT 
CAST(COUNT(TABLE_NAME) AS VARCHAR(50)) AS TABLE_NAME 
FROM 
Exceltest.INFORMATION_SCHEMA.Tables 
WHERE 
TABLE_TYPE = 'BASE TABLE' 

Answer 3

Verwendung dieses

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)