Sybase ASE：通过查询获取真实PK和FK列表

Question

我有一些带有主键和外键的Sybase ASE表，我想得到这些表的真实PK和FK列表。这些信息应该通过SELECT查询返回到系统表。所有使用“syskey”查询的查询都不正确，因为syskey只包含通过sp_foreignkey创建的表的逻辑引用。例如，我有以下表格：

create table tbl_pk1
(col1 int primary key,
col2 int);

create table tbl_pk3
(col1 int null,
col2 int);

sp_primarykey  'tbl_pk3', 'col1'

下面的查询将只返回tbl_pk3。

select t.name  from syskeys i INNER JOIN sysobjects t ON i.id = t.id where  t.name in ('tbl_pk1', 'tbl_pk3')

我知道什么sp_helpconstraint程序可以帮助我，但我不能在SELECT中调用它。也许有人可以帮助我查询系统表，以获得关于表的主键和外键的实际信息？

Answer 1

我使用Sybase ASA（不是ASE），但您可以尝试这个查询（它在ASA上工作）。

对于外键：

select f.* from sys.systable t 
join sys.SYSFOREIGNKEY f on t.table_id=f.primary_table_id
where t.table_name='xxx'

对于主键：

select c.* from sys.systable t
join sys.SYSCONSTRAINT c on t.object_id=c.table_object_id
where t.table_name='xxx' and c.constraint_type='P'

Answer 2

以下是如何做到这一点

select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 1) column_name, 1 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 1) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 2) column_name, 2 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 2) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 3) column_name, 3 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 3) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 4) column_name, 4 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 4) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 5) column_name, 5 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 5) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 6) column_name, 6 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 6) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 7) column_name, 7 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 7) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 8) column_name, 8 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 8) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 9) column_name, 9 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 9) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 10) column_name, 10 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 10) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 11) column_name, 11 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 11) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 12) column_name, 12 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 12) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 13) column_name, 13 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 13) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 14) column_name, 14 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 14) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 15) column_name, 15 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 15) is not null         union         
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 16) column_name, 16 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo'  and  status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 16) is not null