識別整個數據庫中包含在複合PK中的所有列

Question

我想識別數據庫中所有表中所有屬於PK（複合或非複合）部分的列。我怎樣才能做到這一點與SQL語句？預期結果集：

表名稱| COLUMN NAME |數據類型| CONSTRAINT |

Answer 1

在Sql Server中存在一個系統視圖來顯示所有約束。

試試這個：

select * from sys.key_constraints where type_desc = 'PRIMARY_KEY_CONSTRAINT' 

Answer 2

事情是這樣的：

select 
    t.name as [TABLE NAME], 
    c.name as [COLUMN NAME], 
    ty.name as [DATA TYPE], 
    i.name as [CONSTRAINT] 
from sys.index_columns ic 
join sys.indexes i 
    on ic.object_id = i.object_id 
    and ic.index_id = i.index_id 
join sys.columns c 
    on ic.object_id = c.object_id 
    and ic.column_id = c.column_id 
join sys.tables t 
    on ic.object_id = t.object_id 
join sys.types ty 
    on c.user_type_id = ty.user_type_id 
where i.is_primary_key = 1 

Answer 3

我的文件夾不久前複製到我的這個片段，所以我不能把它的信用，但這種效果很好。 ..

select s.name as TABLE_SCHEMA, t.name as TABLE_NAME, k.name as CONSTRAINT_NAME, c.name as COLUMN_NAME, ic.key_ordinal AS ORDINAL_POSITION 
    from sys.key_constraints as k 
    join sys.tables as t 
    on t.object_id = k.parent_object_id 
    join sys.schemas as s 
    on s.schema_id = t.schema_id 
    join sys.index_columns as ic 
    on ic.object_id = t.object_id 
    and ic.index_id = k.unique_index_id 
    join sys.columns as c 
    on c.object_id = t.object_id 
    and c.column_id = ic.column_id 
where k.type = 'PK'; 

Answer 4

SELECT o.name AS TableName, c.Name AS ColumnName, t.name AS DataType, kc.name AS ContraintName 
FROM sys.key_constraints kc 
INNER JOIN sys.index_columns ic ON kc.parent_object_id = ic.object_id AND kc.unique_index_id = ic.index_id 
INNER JOIN sys.columns c ON ic.column_id = c.column_id AND c.object_id = ic.object_id 
INNER JOIN sys.objects o ON ic.object_id = o.object_id 
INNER JOIN sys.types t ON c.system_type_id = t.system_type_id AND c.user_type_id = t.user_type_id 
WHERE kc.type = 'PK' 
ORDER BY TableName,ic.key_ordinal