Sybase ASE：通过查询获取 REAL PK 和 FK 列表

Question

我有一些带有主键和外键的 Sybase ASE 表，我想获取这些表的 REAL PK 和 FK 列表。并且此信息应通过 SELECT 查询返回到系统表。 所有使用“syskeys”查询的查询都是不正确的，因为 syskeys 只包含通过 sp_foreignkey 创建的表的逻辑引用。 例如我有下表：

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“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取有关表的主键和外键的实际信息？

Answer 1

这是怎么做的

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         

Answer 2

我使用 Sybase ASA（不是 ASE），但您可以试试这个查询（它适用于 ASA）。

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'