获取数据库中所有主键的列表

发布于 2024-11-09 12:53:58 字数 537 浏览 4 评论 0原文

这是最好的方法 - 获取数据库中所有主键的列表 - 还是有更好的方法?

SELECT
KCU.TABLE_NAME AS Table_Name,
KCU.CONSTRAINT_NAME AS Constraint_Name,
KCU.COLUMN_NAME AS COLUMN_NAME
FROM
INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC
JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU
ON KCU.CONSTRAINT_SCHEMA = TC.CONSTRAINT_SCHEMA
AND KCU.CONSTRAINT_NAME = TC.CONSTRAINT_NAME
AND KCU.TABLE_SCHEMA = TC.TABLE_SCHEMA
AND KCU.TABLE_NAME = TC.TABLE_NAME
WHERE
TC.CONSTRAINT_TYPE = 'PRIMARY KEY'
ORDER BY
KCU.TABLE_SCHEMA, KCU.TABLE_NAME, KCU.CONSTRAINT_NAME

Is this the best way to - Get a List of all Primary Keys in a Database - or is there something better?

SELECT
KCU.TABLE_NAME AS Table_Name,
KCU.CONSTRAINT_NAME AS Constraint_Name,
KCU.COLUMN_NAME AS COLUMN_NAME
FROM
INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC
JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU
ON KCU.CONSTRAINT_SCHEMA = TC.CONSTRAINT_SCHEMA
AND KCU.CONSTRAINT_NAME = TC.CONSTRAINT_NAME
AND KCU.TABLE_SCHEMA = TC.TABLE_SCHEMA
AND KCU.TABLE_NAME = TC.TABLE_NAME
WHERE
TC.CONSTRAINT_TYPE = 'PRIMARY KEY'
ORDER BY
KCU.TABLE_SCHEMA, KCU.TABLE_NAME, KCU.CONSTRAINT_NAME

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评论(5

烟酉 2024-11-16 12:53:58
USE databasename; 

GO

SELECT i.name AS IndexName, OBJECT_NAME(ic.OBJECT_ID) AS TableName, 
       COL_NAME(ic.OBJECT_ID,ic.column_id) AS ColumnName
FROM sys.indexes AS i
INNER JOIN sys.index_columns AS ic
ON i.OBJECT_ID = ic.OBJECT_ID
AND i.index_id = ic.index_id
WHERE i.is_primary_key = 1

该查询将从数据库中提取所有主键约束...
你只需要执行这个查询并在第一行输入数据库名称

USE databasename; 

GO

SELECT i.name AS IndexName, OBJECT_NAME(ic.OBJECT_ID) AS TableName, 
       COL_NAME(ic.OBJECT_ID,ic.column_id) AS ColumnName
FROM sys.indexes AS i
INNER JOIN sys.index_columns AS ic
ON i.OBJECT_ID = ic.OBJECT_ID
AND i.index_id = ic.index_id
WHERE i.is_primary_key = 1

This query will extract the all primary key constraints from the database...
u just need to execute this query and type the database name in first line

a√萤火虫的光℡ 2024-11-16 12:53:58

以下语法为您提供了正在使用的数据库中的所有约束。

select * from sys.key_constraints;

The following syntax give you all constraints in database in use.

select * from sys.key_constraints;
≈。彩虹 2024-11-16 12:53:58

如果您还需要数据类型信息:

SELECT 
    so.name 'Table Name',
    c.name 'Column Name',
    t.Name 'Data type',
    c.max_length 'Max Length',
    c.precision ,
    c.scale ,
    c.is_nullable,
    ISNULL(i.is_primary_key, 0) 'Primary Key'
FROM    
    sys.columns c
INNER JOIN 
    sys.types t ON c.user_type_id = t.user_type_id
LEFT OUTER JOIN 
    sys.index_columns ic ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN 
    sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
INNER JOIN 
    sysobjects so ON c.object_id = so.id
WHERE
    i.is_primary_key = 1 and 
    so.xtype = 'U'
Order By 'Table Name', 'Column Name'

If you want the data type information as well:

SELECT 
    so.name 'Table Name',
    c.name 'Column Name',
    t.Name 'Data type',
    c.max_length 'Max Length',
    c.precision ,
    c.scale ,
    c.is_nullable,
    ISNULL(i.is_primary_key, 0) 'Primary Key'
FROM    
    sys.columns c
INNER JOIN 
    sys.types t ON c.user_type_id = t.user_type_id
LEFT OUTER JOIN 
    sys.index_columns ic ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN 
    sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
INNER JOIN 
    sysobjects so ON c.object_id = so.id
WHERE
    i.is_primary_key = 1 and 
    so.xtype = 'U'
Order By 'Table Name', 'Column Name'
眼眸里的那抹悲凉 2024-11-16 12:53:58

查看 链接

EXEC sp_pkeys '<tablename>'
EXEC sp_helpconstraint '<tablename>'

sp_pkeys 将为每个返回一行
参与的专栏
的主键。这
您可能最感兴趣的栏目
其中是 COLUMN_NAME 和 PK_NAME。

sp_helpconstraint 将列出所有
的约束条件,包括
引用该表的外键。
在第一个记录集中,将有
只能是名为“对象名称”的列
(有点没用,因为这就是
你通过了)。在第二个
结果集,将会有以下内容
列:约束类型,
constraint_name 和constraint_keys。

look on link

EXEC sp_pkeys '<tablename>'
EXEC sp_helpconstraint '<tablename>'

sp_pkeys will return a row for each
column that participates in the
primary key for . The
columns you are likely most interested
in are COLUMN_NAME and PK_NAME.

sp_helpconstraint will list all
constraints for , including
foreign keys that reference the table.
In the first recordset, there will
only be a column called Object Name
(kind of useless, since that's what
you passed in). In the second
resultset, there will be the following
columns: constraint_type,
constraint_name, and constraint_keys.

踏雪无痕 2024-11-16 12:53:58

如果您从 java 执行此操作,还可以使用数据库元数据对象中的 getPrimaryKeys 方法。也许其他语言也有类似的方法。

If you are doing this from java you can also use the getPrimaryKeys method in the databasemetadata object. Perhaps other languages have similar ways to do it.

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