I am using the following query to list the table constraint(Primary Keys, Unique Keys, Default keys), however, I am having hard time in getting a list of foreign keys and its references (columns).
Can anyone please advise me how I can modified this code so that I could get a list of foreign keys and its references (columns) while keeping PK and UQ the same.
**I will need to use the code for my project, so I would appreciate if you could should me how to modified the query.
UPDATED Modified version : added query suggested by @Deepak
I replaced foreign key sub query (after first union all) with @Deepak's code, but there's an error
"select table_view,
object_type,
constraint_type,
constraint_name,
details,
fk_columns,
pk_columns
from (
select schema_name(t.schema_id) + '.' + t.[name] as table_view,
case when t.[type] = 'U' then 'Table'
when t.[type] = 'V' then 'View'
end as [object_type],
case when c.[type] = 'PK' then 'Primary key'
when c.[type] = 'UQ' then 'Unique constraint'
when i.[type] = 1 then 'Unique clustered index'
when i.type = 2 then 'Unique index'
end as constraint_type,
isnull(c.[name], i.[name]) as constraint_name,
substring(column_names, 1, len(column_names)-1) as [details]
from sys.objects t
left outer join sys.indexes i
on t.object_id = i.object_id
left outer join sys.key_constraints c
on i.object_id = c.parent_object_id
and i.index_id = c.unique_index_id
cross apply (select col.[name] + ', '
from sys.index_columns ic
inner join sys.columns col
on ic.object_id = col.object_id
and ic.column_id = col.column_id
where ic.object_id = t.object_id
and ic.index_id = i.index_id
order by col.column_id
for xml path ('') ) D (column_names)
where is_unique = 1
and t.is_ms_shipped <> 1
union all
SELECT schema_name(fk_tab.schema_id) + '.' + fk_tab.name as foreign_table,
'Table',
'Foreign key',
fk.name as fk_constraint_name,
schema_name(pk_tab.schema_id) + '.' + pk_tab.name,
col.[name] as [fk_columns],
col2.[name] as [pk_columns],
schema_name(objects.schema_id) + '.' + objects.[name] + '.' + col.[name] + ' --> ' + schema_name(pk_tab.schema_id) + '.' + pk_tab.name + '.' + col2.[name] as details
FROM
sys.objects objects
INNER JOIN sys.tables fk_tab on objects.object_id = fk_tab.object_id
INNER JOIN sys.foreign_keys fk on fk_tab.object_id = fk.parent_object_id
INNER JOIN sys.tables pk_tab on pk_tab.object_id = fk.referenced_object_id
INNER JOIN sys.foreign_key_columns fk_c on fk_c.parent_object_id = fk.parent_object_id
and fk_c.constraint_object_id = fk.object_id
inner join sys.columns col
on fk_c.parent_object_id = col.object_id
and fk_c.parent_column_id = col.column_id
left join sys.columns col2
on fk_c.referenced_object_id = col2.object_id
and fk_c.referenced_column_id = col2.column_id
union all
select schema_name(t.schema_id) + '.' + t.[name],
'Table',
'Check constraint',
con.[name] as constraint_name,
con.[definition]
from sys.check_constraints con
left outer join sys.objects t
on con.parent_object_id = t.object_id
left outer join sys.all_columns col
on con.parent_column_id = col.column_id
and con.parent_object_id = col.object_id
union all
select schema_name(t.schema_id) + '.' + t.[name],
'Table',
'Default constraint',
con.[name],
col.[name] + ' = ' + con.[definition]
from sys.default_constraints con
left outer join sys.objects t
on con.parent_object_id = t.object_id
left outer join sys.all_columns col
on con.parent_column_id = col.column_id
and con.parent_object_id = col.object_id) a
order by table_view, constraint_type, constraint_name"
Here's the error message:
SQLServerException: All queries combined using a UNION, INTERSECT or EXCEPT operator must have an equal number of expressions in their target lists.
My original Code :refer from Source: Dataedo's List all table constraint
"select table_view,
object_type,
constraint_type,
constraint_name,
details
from (
select schema_name(t.schema_id) + '.' + t.[name] as table_view,
case when t.[type] = 'U' then 'Table'
when t.[type] = 'V' then 'View'
end as [object_type],
case when c.[type] = 'PK' then 'Primary key'
when c.[type] = 'UQ' then 'Unique constraint'
when i.[type] = 1 then 'Unique clustered index'
when i.type = 2 then 'Unique index'
end as constraint_type,
isnull(c.[name], i.[name]) as constraint_name,
substring(column_names, 1, len(column_names)-1) as [details]
from sys.objects t
left outer join sys.indexes i
on t.object_id = i.object_id
left outer join sys.key_constraints c
on i.object_id = c.parent_object_id
and i.index_id = c.unique_index_id
cross apply (select col.[name] + ', '
from sys.index_columns ic
inner join sys.columns col
on ic.object_id = col.object_id
and ic.column_id = col.column_id
where ic.object_id = t.object_id
and ic.index_id = i.index_id
order by col.column_id
for xml path ('') ) D (column_names)
where is_unique = 1
and t.is_ms_shipped <> 1
union all
select schema_name(fk_tab.schema_id) + '.' + fk_tab.name as foreign_table,
'Table',
'Foreign key',
fk.name as fk_constraint_name,
schema_name(pk_tab.schema_id) + '.' + pk_tab.name
from sys.foreign_keys fk
inner join sys.tables fk_tab
on fk_tab.object_id = fk.parent_object_id
inner join sys.tables pk_tab
on pk_tab.object_id = fk.referenced_object_id
inner join sys.foreign_key_columns fk_cols
on fk_cols.constraint_object_id = fk.object_id
union all
select schema_name(t.schema_id) + '.' + t.[name],
'Table',
'Check constraint',
con.[name] as constraint_name,
con.[definition]
from sys.check_constraints con
left outer join sys.objects t
on con.parent_object_id = t.object_id
left outer join sys.all_columns col
on con.parent_column_id = col.column_id
and con.parent_object_id = col.object_id
union all
select schema_name(t.schema_id) + '.' + t.[name],
'Table',
'Default constraint',
con.[name],
col.[name] + ' = ' + con.[definition]
from sys.default_constraints con
left outer join sys.objects t
on con.parent_object_id = t.object_id
left outer join sys.all_columns col
on con.parent_column_id = col.column_id
and con.parent_object_id = col.object_id) a
where table_view like 'dbo.AREA%'
order by table_view, constraint_type, constraint_name"
Please let me know if anything is unclear.
Thank you so muchh
