Wednesday, December 21, 2011
Tuesday, November 22, 2011
Wednesday, November 16, 2011
Monday, October 24, 2011
sp_helpindex3
CREATE procedure [dbo].[sp_helpindex3]
@objname nvarchar(776) -- the table to check for indexes
as
-- PRELIM
set nocount on
declare @objid int, -- the object id of the table
@indid smallint, -- the index id of an index
@groupid int, -- the filegroup id of an index
@indname sysname,
@groupname sysname,
@status int,
@keys nvarchar(2126), --Length (16*max_identifierLength)+(15*2)+(16*3)
@inc_columns nvarchar(max),
@inc_Count smallint,
@loop_inc_Count smallint,
@dbname sysname,
@ignore_dup_key bit,
@is_unique bit,
@is_hypothetical bit,
@is_primary_key bit,
@is_unique_key bit,
@auto_created bit,
@no_recompute bit,
@filter_definition nvarchar(max)
-- Check to see that the object names are local to the current database.
select @dbname = parsename(@objname,3)
if @dbname is null
select @dbname = db_name()
else if @dbname <> db_name()
begin
raiserror(15250,-1,-1)
return (1)
end
-- Check to see the the table exists and initialize @objid.
select @objid = object_id(@objname)
if @objid is NULL
begin
raiserror(15009,-1,-1,@objname,@dbname)
return (1)
end
-- OPEN CURSOR OVER INDEXES (skip stats: bug shiloh_51196)
declare ms_crs_ind cursor local static for
select i.index_id, i.data_space_id, i.name,
i.ignore_dup_key, i.is_unique, i.is_hypothetical, i.is_primary_key, i.is_unique_constraint,
s.auto_created, s.no_recompute, i.filter_definition
from sys.indexes i join sys.stats s
on i.object_id = s.object_id and i.index_id = s.stats_id
where i.object_id = @objid
open ms_crs_ind
fetch ms_crs_ind into @indid, @groupid, @indname, @ignore_dup_key, @is_unique, @is_hypothetical,
@is_primary_key, @is_unique_key, @auto_created, @no_recompute, @filter_definition
-- IF NO INDEX, QUIT
if @@fetch_status < 0
begin
deallocate ms_crs_ind
raiserror(15472,-1,-1,@objname) -- Object does not have any indexes.
return (0)
end
-- create temp tables
CREATE TABLE #spindtab
(
index_name sysname collate database_default NOT NULL,
index_id int,
ignore_dup_key bit,
is_unique bit,
is_hypothetical bit,
is_primary_key bit,
is_unique_key bit,
auto_created bit,
no_recompute bit,
groupname sysname collate database_default NULL,
index_keys nvarchar(2126) collate database_default NOT NULL, -- see @keys above for length descr
filter_definition nvarchar(max),
inc_Count smallint,
inc_columns nvarchar(max)
)
CREATE TABLE #IncludedColumns
( RowNumber smallint,
[Name] nvarchar(128)
)
-- Now check out each index, figure out its type and keys and
-- save the info in a temporary table that we'll print out at the end.
while @@fetch_status >= 0
begin
-- First we'll figure out what the keys are.
declare @i int, @thiskey nvarchar(131) -- 128+3
select @keys = index_col(@objname, @indid, 1), @i = 2
if (indexkey_property(@objid, @indid, 1, 'isdescending') = 1)
select @keys = @keys + '(-)'
select @thiskey = index_col(@objname, @indid, @i)
if ((@thiskey is not null) and (indexkey_property(@objid, @indid, @i, 'isdescending') = 1))
select @thiskey = @thiskey + '(-)'
while (@thiskey is not null )
begin
select @keys = @keys + ', ' + @thiskey, @i = @i + 1
select @thiskey = index_col(@objname, @indid, @i)
if ((@thiskey is not null) and (indexkey_property(@objid, @indid, @i, 'isdescending') = 1))
select @thiskey = @thiskey + '(-)'
end
-- Second, we'll figure out what the included columns are.
SELECT @inc_Count = count(*)
FROM
sys.tables AS tbl
INNER JOIN sys.indexes AS si
ON (si.index_id > 0
and si.is_hypothetical = 0)
AND (si.object_id=tbl.object_id)
INNER JOIN sys.index_columns AS ic
ON (ic.column_id > 0
and (ic.key_ordinal > 0 or ic.partition_ordinal = 0 or ic.is_included_column != 0))
AND (ic.index_id=CAST(si.index_id AS int) AND ic.object_id=si.object_id)
INNER JOIN sys.columns AS clmns
ON clmns.object_id = ic.object_id
and clmns.column_id = ic.column_id
WHERE ic.is_included_column = 1 and
(si.index_id = @indid) and
(tbl.object_id= @objid)
IF @inc_Count > 0
INSERT #IncludedColumns
SELECT ROW_NUMBER() OVER (ORDER BY clmns.column_id)
, clmns.name
FROM
sys.tables AS tbl
INNER JOIN sys.indexes AS si
ON (si.index_id > 0
and si.is_hypothetical = 0)
AND (si.object_id=tbl.object_id)
INNER JOIN sys.index_columns AS ic
ON (ic.column_id > 0
and (ic.key_ordinal > 0 or ic.partition_ordinal = 0 or ic.is_included_column != 0))
AND (ic.index_id=CAST(si.index_id AS int) AND ic.object_id=si.object_id)
INNER JOIN sys.columns AS clmns
ON clmns.object_id = ic.object_id
and clmns.column_id = ic.column_id
WHERE ic.is_included_column = 1 and
(si.index_id = @indid) and
(tbl.object_id= @objid)
SELECT @inc_columns = [Name] FROM #IncludedColumns WHERE RowNumber = 1
SET @loop_inc_Count = 1
WHILE @loop_inc_Count < @inc_Count
BEGIN
SELECT @inc_columns = @inc_columns + ', ' + [Name]
FROM #IncludedColumns WHERE RowNumber = @loop_inc_Count + 1
SET @loop_inc_Count = @loop_inc_Count + 1
END
select @groupname = null
select @groupname = name from sys.data_spaces where data_space_id = @groupid
-- INSERT ROW FOR INDEX
insert into #spindtab values (@indname, @indid, @ignore_dup_key, @is_unique, @is_hypothetical,
@is_primary_key, @is_unique_key, @auto_created, @no_recompute, @groupname, @keys, @filter_definition, @inc_Count, @inc_columns)
-- Next index
fetch ms_crs_ind into @indid, @groupid, @indname, @ignore_dup_key, @is_unique, @is_hypothetical,
@is_primary_key, @is_unique_key, @auto_created, @no_recompute, @filter_definition
end
deallocate ms_crs_ind
-- DISPLAY THE RESULTS
select
'index_name' = index_name,
'index_description' = convert(varchar(210), --bits 16 off, 1, 2, 16777216 on, located on group
case when index_id = 1 then 'clustered' else 'nonclustered' end
+ case when ignore_dup_key <>0 then ', ignore duplicate keys' else '' end
+ case when is_unique <>0 then ', unique' else '' end
+ case when is_hypothetical <>0 then ', hypothetical' else '' end
+ case when is_primary_key <>0 then ', primary key' else '' end
+ case when is_unique_key <>0 then ', unique key' else '' end
+ case when auto_created <>0 then ', auto create' else '' end
+ case when no_recompute <>0 then ', stats no recompute' else '' end
+ ' located on ' + groupname),
'index_keys' = index_keys,
--'num_included_columns' = inc_Count,
'included_columns' = inc_columns,
'filter_definition' = filter_definition,
'index_id' = index_id
from #spindtab
order by index_name
return (0) -- sp_helpindexwinc2
GO
Thursday, October 20, 2011
Wednesday, October 19, 2011
Subscribe to:
Posts (Atom)