Sql server 查询SQL Server/Oracle数据库表数据-标识列

我正在尝试查询SQLServer和Oracle数据库，以获取表数据，该表数据将指示列是否为自动递增。我假设您会查看“information\u schema.columns”和“user\u tab\u cols”表，但它似乎不包含这些信息。有人知道我在哪里可以检索这些信息吗

在sql server中，这将返回所有具有标识的列

    select OBJECT_NAME(id) as Tablename, name as ColumnName,*
    from syscolumns
   where COLUMNPROPERTY(id, name, 'IsIdentity') = 1

或者使用信息模式

select TABLE_SCHEMA + '.' + TABLE_NAME,COLUMN_NAME
 from INFORMATION_SCHEMA.columns
where COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA + '.' + TABLE_NAME), 
   COLUMN_NAME, 'IsIdentity') = 1

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要检查SQL Server中的特定列，请执行以下操作：

select t.name as tableName, c.name as columnName, c.is_identity 
    from sys.columns c
        inner join sys.tables t
            on c.object_id = t.object_id
    where t.name = 'YourTable'
        and c.name = 'YourColumn'

或查找所有标识列

select t.name as tableName, c.name as columnName, c.is_identity 
    from sys.columns c
        inner join sys.tables t
            on c.object_id = t.object_id
    where c.is_identity = 1

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Oracle没有标识列—它使用称为序列的对象，并且它们不附加到列。