How can I search my sql database for a table that contains a field tiEntityId. This field is referenced in a stored procedure, but I am unable to identify which table this id is a primary key for? Any suggestions? I currently look through stored procedure definitions for references to text by using something like this:
Declare #Search varchar(255)
SET #Search='[10.10.100.50]'
SELECT DISTINCT
o.name AS Object_Name,o.type_desc
FROM sys.sql_modules m
INNER JOIN sys.objects o ON m.object_id=o.object_id
WHERE m.definition Like '%'+#Search+'%'
ORDER BY 2,1
Any SQL guru's out there know what I need to use to find the table that contains the field, preferably the table where that field is the Primary Key.
You can do:
select table_name
from INFORMATION_SCHEMA.COLUMNS
where column_name = 'MyColumn'
If you're looking for primary keys that contain a column with a given name (in SQL 2005+), here you go:
select so.name as TableName,
si.name as IndexName,
sc.name as ColumnName
from sys.indexes si
join sys.index_columns sic
on si.object_id = sic.object_id
and si.index_id = sic.index_id
join sys.columns sc
on si.object_id = sc.object_id
and sic.column_id = sc.column_id
join sys.objects so
on si.object_id = so.object_id
where sc.name like '%ColumnName%'
and si.is_primary_key = 1
Related
I am trying to get the triggers of the table using this SQL statement:
SELECT c.text
FROM dbo.sysobjects s, dbo.syscomments c
WHERE s.name = 'redgate.tablecampare'
AND s.id = c.id
This works for dbo but not for different schema names
Assuming you're on SQL Server 2005 or greater, this should work:
select m.definition
from sys.triggers as t
join sys.sql_modules as m
on m.object_id = t.object_id
where t.parent_id = object_id('schema.object')
You can use below system catalog to find out triggers containing a specific table.
SELECT OBJECT_NAME(id)
FROM SYSCOMMENTS
WHERE [text] LIKE '%redgate.tablecampare%'
AND OBJECTPROPERTY(id, 'IsTrigger') = 1
GROUP BY OBJECT_NAME(id)
SELECT OBJECT_NAME(object_id)
FROM sys.sql_modules
WHERE OBJECTPROPERTY(object_id, 'IsTrigger') = 1
AND definition LIKE '%redgate.tablecampare%'
I am using SQL Server 2008 R2.
I have a table in which I have a column that have a not null constraint.
Now, what if I want to check if column has not null constraint defined or not for specific column?
Is there any query to find out it?
Thanks in advance..
SELECT *
FROM INFORMATION_SCHEMA.COLUMNS
This query will show all columns from all tables and a whole host of information on them. The column you would want is: IS_NULLABLE that can have the value 'YES' or 'NO'
COLUMNS (Transact-SQL)
Something like
SELECT o.name AS tab, c.name AS col, c.is_nullable
FROM sys.objects o
INNER JOIN sys.columns c ON c.object_id = o.object_id
WHERE o.name like '%yourtable%' and type = 'U'
See sys.columns and sys.objects
There's some catalog views you can use:
// information about check constraints
select * from sys.check_constraints
// information about specific columns
select name, is_nullable from sys.columns
// information about tables
select * from sys.tables
The sys.columns is_nullablefield holds information about nullability.
there is a table sys.all_columns
and a column in this table called is_nullable
http://technet.microsoft.com/en-us/library/ms177522(v=sql.105).aspx
select s.name, c.name, c.is_nullable from sys.tables s, sys.all_columns c
where s.object_id = c.object_id
and s.type = 'U' -- USER_TABLE
and c.is_nullable = 1
It is a simple command that will list - Field, Type, Null, Key, Default
SHOW FIELDS FROM Your_Table_Name;
I have sql server database with numerous tables, some no longer used so I want to remove them. All database interactivity is via stored procedure to these tables.
Is there a database sql script that I can use that will list all tables not referenced in any of the stored procedures in the database?
If SQL Server 2008 then the dependencies information is now reliable.
SELECT SCHEMA_NAME(t.schema_id),
t.name
FROM sys.tables t
WHERE is_ms_shipped = 0
AND NOT EXISTS (SELECT *
FROM sys.sql_expression_dependencies d
WHERE d.referenced_entity_name = t.name
AND (( is_ambiguous = 1 or is_caller_dependent=1)
OR
d.referenced_id = t.object_id) )
You can't do this if you use any dynamic T-SQL. Dynamic T-SQL won't show up in any investigation of object dependencies.
Instead, you can use the DMV sys.dm_db_index_usage_stats to find what objects haven't been referenced by any queries. Here's a query I did on SQLServerPedia for that:
http://sqlserverpedia.com/wiki/Find_Indexes_Not_In_Use
The query is designed for performance tuning indexes, so you'll need to tweak a few lines. Here's the modified query:
SELECT
o.name
, indexname=i.name
, i.index_id
, reads=user_seeks + user_scans + user_lookups
, writes = user_updates
, rows = (SELECT SUM(p.rows) FROM sys.partitions p WHERE p.index_id = s.index_id AND s.object_id = p.object_id)
, CASE
WHEN s.user_updates < 1 THEN 100
ELSE 1.00 * (s.user_seeks + s.user_scans + s.user_lookups) / s.user_updates
END AS reads_per_write
, 'DROP INDEX ' + QUOTENAME(i.name)
+ ' ON ' + QUOTENAME(c.name) + '.' + QUOTENAME(OBJECT_NAME(s.object_id)) as 'drop statement'
FROM sys.dm_db_index_usage_stats s
INNER JOIN sys.indexes i ON i.index_id = s.index_id AND s.object_id = i.object_id
INNER JOIN sys.objects o on s.object_id = o.object_id
INNER JOIN sys.schemas c on o.schema_id = c.schema_id
WHERE OBJECTPROPERTY(s.object_id,'IsUserTable') = 1
AND s.database_id = DB_ID()
ORDER BY reads
Keep in mind that this catches all indexes, and you'll need to sift through - some of your objects may be heaps, some may have clustered indexes, etc. I'll leave this as a wiki so someone more ambitious than me can edit it to build a deduped list. :-D
Check this discussion tsql script to find tables not being used by stored procedures, views, functions, etc?
And this article(listed from above discussion) http://www.mssqltips.com/tip.asp?tip=1294 discusses about SQL object dependencies.
Perhaps something along these lines:
select t.table_name
from INFORMATION_SCHEMA.TABLES t
where not exists (
select 1 from INFORMATION_SCHEMA.ROUTINES r
where object_definition(object_id(r.ROUTINE_NAME)) like '%'+t.TABLE_NAME+'%'
) order by t.TABLE_NAME
The first query lists table with the stored proc name that uses it.
The second query lists table with the number of stored procs using it.
-- list all tables / sprocs
select t.name [Table], p.name [StoredProc]
from sys.tables t
left join sys.procedures p on (OBJECT_DEFINITION(p.object_id)) like '%' + t.name + '%'
where t.type = 'U'
order by t.name, p.name
-- count stored procs using table
select t.name [Table], count(p.name) [Count]
from sys.tables t
left join sys.procedures p on (OBJECT_DEFINITION(p.object_id)) like '%' + t.name + '%'
where t.type = 'U'
group by t.name
order by t.name
Here's one you might try:
select
name
from
sys.tables t
left join
sys.sql_dependencies d
on
t.object_id =
d.referenced_major_id
where
d.referenced_major_id is null
Otherwise, here's a reference I've used in the past:
http://www.mssqltips.com/tip.asp?tip=1294
If performace isnt to much of a problem you could try the following.
Select Distinct Object_Name(ID)
From syscomments
Where ID Not In (Select ID From syscomments Where Text Like '%<TableName>%')
This will check each view, rule, default, trigger, CHECK constraint, DEFAULT constraint, and stored procedure within your database
Most of this code doesn't work if there are schemas other than "dbo", or if the user's default schema is not "dbo". Here's an update to one of the scripts to fix that:
select t.Table_Schema + '.' + t.table_name
from INFORMATION_SCHEMA.TABLES t
where not exists (
select 1 from INFORMATION_SCHEMA.ROUTINES r
where object_definition(object_id(r.routine_schema + '.' + r.ROUTINE_NAME)) like '%'+t.TABLE_NAME+'%'
) order by t.TABLE_NAME
Can anyone provide me the query in sql server to extract the tables that have been done indexing, for a particular database....
Your question is somewhat unclear. This will return all tables with at least one index.
select DISTINCT OBJECT_NAME(object_id)
from sys.indexes
where type<>0
Or for SQL Server 2000
select DISTINCT OBJECT_NAME(id)
from sysindexes
where indid<>0
select object_name(object_id),* from sys.indexes where type <> 0
This will return you all the indexes available in your database. But beware, it also lists the system tables.
The sys.indexes DMV should have what you're looking for:
SELECT TableName = object_name(Object_Id)
, IndexName = Name
, IndexType = Type_Desc
FROM sys.indexes
The Type_Desc column will tell you whether you're looking at a heap, a clustered index, or a non-clustered index.
Joining to sys.tables will limit the results to user tables and leave out system tables:
SELECT TableName = st.Name
, IndexName = si.name
, IndexType = si.type_desc
FROM SYS.indexes si
JOIN SYS.tables st
ON si.object_id = st.object_id
How can we check that table have index or not ? if have how to find that index for a particular column for a table?
Regards,
kumar
In SQL Server Management Studio you can navigate down the tree to the table you're interested in and open the indexes node. Double clicking any index in that node will then open the properties dialog which will show which columns are included in the index.
If you would like to use T-SQL, this might help:
SELECT
sys.tables.name,
sys.indexes.name,
sys.columns.name
FROM sys.indexes
INNER JOIN sys.tables ON sys.tables.object_id = sys.indexes.object_id
INNER JOIN sys.index_columns ON sys.index_columns.index_id = sys.indexes.index_id
AND sys.index_columns.object_id = sys.tables.object_id
INNER JOIN sys.columns ON sys.columns.column_id = sys.index_columns.column_id
AND sys.columns.object_id = sys.tables.object_id
WHERE sys.tables.name = 'TABLE NAME HERE'
ORDER BY
sys.tables.name,
sys.indexes.name,
sys.columns.name
ordering by column name is wrong, you need to order by the position in the index, so order by clause should be tabname, indname and sys.index_columns.index_column_id...
Try
select object_name(object_id),* from sys.indexes
where object_name(object_id) = 'your table name'