SQL सर्वर डेटाबेस में पहचान कॉलम सूचीबद्ध करते समय टेबल और स्कीमा शामिल करना

अगर आपने कभी भी sys.identity_columns के बारे में पूछा है SQL सर्वर में देखें, तो आपको पता चल जाएगा कि यह पहचान कॉलम की एक सूची देता है। यह object_id भी लौटाता है तालिका का, लेकिन तालिका का नाम या उसकी स्कीमा नहीं।

आप इस आलेख में कोड उदाहरणों का उपयोग पहचान कॉलम, उनकी संबंधित तालिकाओं और स्कीमा के साथ वापस करने के लिए कर सकते हैं।

उदाहरण 1 - सभी परिणाम लौटाएं

यह उदाहरण sys.objects . के साथ जुड़ने का उपयोग करता है तालिका और स्कीमा जानकारी वापस करने के लिए

USE WideWorldImportersDW;
SELECT 
  SCHEMA_NAME(o.schema_id) AS [schema],
  OBJECT_NAME(ic.object_id) AS [object],
  o.type_desc,
  ic.name,
  ic.seed_value,
  ic.increment_value,
  ic.last_value
FROM sys.identity_columns ic 
INNER JOIN sys.objects o 
ON o.object_id = ic.object_id
ORDER BY SCHEMA_NAME(o.schema_id) ASC;

परिणाम:

+-------------+---------------------------+----------------+------------------------------+--------------+-------------------+--------------+
| schema      | object                    | type_desc      | name                         | seed_value   | increment_value   | last_value   |
|-------------+---------------------------+----------------+------------------------------+--------------+-------------------+--------------|
| Fact        | Movement                  | USER_TABLE     | Movement Key                 | 1            | 1                 | 236667       |
| Fact        | Order                     | USER_TABLE     | Order Key                    | 1            | 1                 | 231412       |
| Fact        | Purchase                  | USER_TABLE     | Purchase Key                 | 1            | 1                 | 8367         |
| Fact        | Sale                      | USER_TABLE     | Sale Key                     | 1            | 1                 | 228265       |
| Fact        | Stock Holding             | USER_TABLE     | Stock Holding Key            | 1            | 1                 | 227          |
| Fact        | Transaction               | USER_TABLE     | Transaction Key              | 1            | 1                 | 99585        |
| Integration | Customer_Staging          | USER_TABLE     | Customer Staging Key         | 1            | 1                 | NULL         |
| Integration | Employee_Staging          | USER_TABLE     | Employee Staging Key         | 1            | 1                 | NULL         |
| Integration | Movement_Staging          | USER_TABLE     | Movement Staging Key         | 1            | 1                 | NULL         |
| Integration | Order_Staging             | USER_TABLE     | Order Staging Key            | 1            | 1                 | NULL         |
| Integration | PaymentMethod_Staging     | USER_TABLE     | Payment Method Staging Key   | 1            | 1                 | NULL         |
| Integration | Purchase_Staging          | USER_TABLE     | Purchase Staging Key         | 1            | 1                 | NULL         |
| Integration | Sale_Staging              | USER_TABLE     | Sale Staging Key             | 1            | 1                 | NULL         |
| Integration | StockHolding_Staging      | USER_TABLE     | Stock Holding Staging Key    | 1            | 1                 | NULL         |
| Integration | StockItem_Staging         | USER_TABLE     | Stock Item Staging Key       | 1            | 1                 | NULL         |
| Integration | Supplier_Staging          | USER_TABLE     | Supplier Staging Key         | 1            | 1                 | NULL         |
| Integration | Transaction_Staging       | USER_TABLE     | Transaction Staging Key      | 1            | 1                 | NULL         |
| Integration | TransactionType_Staging   | USER_TABLE     | Transaction Type Staging Key | 1            | 1                 | NULL         |
| Integration | City_Staging              | USER_TABLE     | City Staging Key             | 1            | 1                 | NULL         |
| sys         | queue_messages_2041058307 | INTERNAL_TABLE | queuing_order                | 0            | 1                 | NULL         |
| sys         | sqlagent_job_history      | INTERNAL_TABLE | instance_id                  | 1            | 1                 | NULL         |
| sys         | sqlagent_jobsteps_logs    | INTERNAL_TABLE | log_id                       | 1            | 1                 | NULL         |
| sys         | queue_messages_1977058079 | INTERNAL_TABLE | queuing_order                | 0            | 1                 | NULL         |
| sys         | queue_messages_2009058193 | INTERNAL_TABLE | queuing_order                | 0            | 1                 | NULL         |
+-------------+---------------------------+----------------+------------------------------+--------------+-------------------+--------------+

उदाहरण 2 - केवल उपयोगकर्ता तालिका लौटाएं

यह उदाहरण sys.tables . के साथ आंतरिक जुड़ाव का उपयोग करता है उपयोगकर्ता तालिका से केवल पहचान कॉलम वापस करने के लिए।

USE WideWorldImportersDW;
SELECT 
  SCHEMA_NAME(t.schema_id) AS [schema],
  OBJECT_NAME(ic.object_id) AS [table],
  ic.name,
  ic.seed_value,
  ic.increment_value,
  ic.last_value
FROM sys.identity_columns ic 
INNER JOIN sys.tables t 
ON t.object_id = ic.object_id
ORDER BY SCHEMA_NAME(t.schema_id) ASC;

परिणाम:

+-------------+-------------------------+------------------------------+--------------+-------------------+--------------+
| schema      | table                   | name                         | seed_value   | increment_value   | last_value   |
|-------------+-------------------------+------------------------------+--------------+-------------------+--------------|
| Fact        | Movement                | Movement Key                 | 1            | 1                 | 236667       |
| Fact        | Order                   | Order Key                    | 1            | 1                 | 231412       |
| Fact        | Purchase                | Purchase Key                 | 1            | 1                 | 8367         |
| Fact        | Sale                    | Sale Key                     | 1            | 1                 | 228265       |
| Fact        | Stock Holding           | Stock Holding Key            | 1            | 1                 | 227          |
| Fact        | Transaction             | Transaction Key              | 1            | 1                 | 99585        |
| Integration | City_Staging            | City Staging Key             | 1            | 1                 | NULL         |
| Integration | Customer_Staging        | Customer Staging Key         | 1            | 1                 | NULL         |
| Integration | Employee_Staging        | Employee Staging Key         | 1            | 1                 | NULL         |
| Integration | Movement_Staging        | Movement Staging Key         | 1            | 1                 | NULL         |
| Integration | Order_Staging           | Order Staging Key            | 1            | 1                 | NULL         |
| Integration | PaymentMethod_Staging   | Payment Method Staging Key   | 1            | 1                 | NULL         |
| Integration | Purchase_Staging        | Purchase Staging Key         | 1            | 1                 | NULL         |
| Integration | Sale_Staging            | Sale Staging Key             | 1            | 1                 | NULL         |
| Integration | StockHolding_Staging    | Stock Holding Staging Key    | 1            | 1                 | NULL         |
| Integration | StockItem_Staging       | Stock Item Staging Key       | 1            | 1                 | NULL         |
| Integration | Supplier_Staging        | Supplier Staging Key         | 1            | 1                 | NULL         |
| Integration | Transaction_Staging     | Transaction Staging Key      | 1            | 1                 | NULL         |
| Integration | TransactionType_Staging | Transaction Type Staging Key | 1            | 1                 | NULL         |
+-------------+-------------------------+------------------------------+--------------+-------------------+--------------+