Reorganize all indexes in a Database in SQL Server.

Index Maintenance is one of the major task for a DBA. If rate of Index fragmentation increased then index de-fragmentation is become required. So we can use index reorganize option to rebuild all the indexes. Use Index reorganize option when rate of index fragmentation is b/w 10% to  40%.

Syntax:

Alter Index All On Table_Name Reorganize.

Example:

ALTER INDEX ALL ON geographicals Reorganize

GO

 

Rebuild Index for All tablex in database:

Exec sp_msforeachtable 'ALTER INDEX ALL ON ? Reorganize'

GO

Reference: 

SQL SERVER – Drop All the Foreign Key Constraint in Database – Create All the Foreign Key Constraint in Database

SET NOCOUNT ON

DECLARE @table TABLE (
 RowId INT PRIMARY KEY IDENTITY(1, 1)
 ,ForeignKeyConstraintName NVARCHAR(200)
 ,ForeignKeyConstraintTableSchema NVARCHAR(200)
 ,ForeignKeyConstraintTableName NVARCHAR(200)
 ,ForeignKeyConstraintColumnName NVARCHAR(200)
 ,PrimaryKeyConstraintName NVARCHAR(200)
 ,PrimaryKeyConstraintTableSchema NVARCHAR(200)
 ,PrimaryKeyConstraintTableName NVARCHAR(200)
 ,PrimaryKeyConstraintColumnName NVARCHAR(200)
 )

INSERT INTO @table (
 ForeignKeyConstraintName
 ,ForeignKeyConstraintTableSchema
 ,ForeignKeyConstraintTableName
 ,ForeignKeyConstraintColumnName
 )
SELECT U.CONSTRAINT_NAME
 ,U.TABLE_SCHEMA
 ,U.TABLE_NAME
 ,U.COLUMN_NAME
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE U
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS C ON U.CONSTRAINT_NAME = C.CONSTRAINT_NAME
WHERE C.CONSTRAINT_TYPE = 'FOREIGN KEY'

UPDATE @table
SET PrimaryKeyConstraintName = UNIQUE_CONSTRAINT_NAME
FROM @table T
INNER JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS R ON T.ForeignKeyConstraintName = R.CONSTRAINT_NAME

UPDATE @table
SET PrimaryKeyConstraintTableSchema = TABLE_SCHEMA
 ,PrimaryKeyConstraintTableName = TABLE_NAME
FROM @table T
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS C ON T.PrimaryKeyConstraintName = C.CONSTRAINT_NAME

UPDATE @table
SET PrimaryKeyConstraintColumnName = COLUMN_NAME
FROM @table T
INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE U ON T.PrimaryKeyConstraintName = U.CONSTRAINT_NAME

--SELECT * FROM @table
--DROP CONSTRAINT:
SELECT '
ALTER TABLE [' + ForeignKeyConstraintTableSchema + '].[' + ForeignKeyConstraintTableName + ']
DROP CONSTRAINT ' + ForeignKeyConstraintName + '
 
GO'
FROM @table

--ADD CONSTRAINT:
SELECT '
ALTER TABLE [' + ForeignKeyConstraintTableSchema + '].[' + ForeignKeyConstraintTableName + ']
ADD CONSTRAINT ' + ForeignKeyConstraintName + ' FOREIGN KEY(' + ForeignKeyConstraintColumnName + ') REFERENCES [' + PrimaryKeyConstraintTableSchema + '].[' + PrimaryKeyConstraintTableName + '](' + PrimaryKeyConstraintColumnName + ')
 
GO'
FROM @table
GO






Reference:https://blog.sqlauthority.com/2014/04/11/sql-server-drop-all-the-foreign-key-constraint-in-database-create-all-the-foreign-key-constraint-in-database/

List all Orphan users in a SQL Server database

CREATE TABLE ##ORPHANUSER (
DBNAME VARCHAR(100)
,USERNAME VARCHAR(100)
,CREATEDATE VARCHAR(100)
,USERTYPE VARCHAR(100)
)
EXEC SP_MSFOREACHDB ' USE [?]
INSERT INTO ##ORPHANUSER
SELECT DB_NAME() DBNAME, NAME,CREATEDATE,
(CASE 
WHEN ISNTGROUP = 0 AND ISNTUSER = 0 THEN ''SQL LOGIN''
WHEN ISNTGROUP = 1 THEN ''NT GROUP''
WHEN ISNTGROUP = 0 AND ISNTUSER = 1 THEN ''NT LOGIN''
END) [LOGIN TYPE] FROM sys.sysusers
WHERE SID IS NOT NULL AND SID <> 0X0 AND ISLOGIN =1 AND
SID NOT IN (SELECT SID FROM sys.syslogins)'
SELECT *
FROM ##ORPHANUSER
DROP TABLE ##ORPHANUSER

Find text in SQL Server Agent Jobs

USE MSDBGO
SELECT Job.name AS JobName
,Job.enabled AS ActiveStatus
,JobStep.step_name AS JobStepName
,JobStep.command AS JobCommandFROM sysjobs JobINNER JOIN sysjobsteps JobStep ON Job.job_id = JobStep.job_idWHERE JobStep.command LIKE '%YourTextHere%'

Calculate disk space occupied by each schema in SQL Server

SELECT SCHEMA_NAME(so.schema_id) AS SchemaName
,SUM(ps.reserved_page_count) * 8.0 / 1024 AS SizeInMBFROM sys.dm_db_partition_stats psJOIN sys.indexes i ON i.object_id = ps.object_id
AND i.index_id = ps.index_idJOIN sys.objects so ON i.object_id = so.object_id
WHERE so.type = 'U'
GROUP BY so.schema_id
ORDER BY OBJECT_SCHEMA_NAME(so.schema_id)
,SizeInMB DESC

Space occupied by each Schema in SQL Server database

SELECT  SCHEMA_NAME(so.schema_id) AS SchemaName
               ,SUM(ps.reserved_page_count) * 8.0 / 1024 AS SizeInMB
        FROM    sys.dm_db_partition_stats ps
        JOIN    sys.indexes i
          ON    i.object_id                                     =           ps.object_id
         AND    i.index_id                                      =           ps.index_id
JOIN sys.objects so
  ON i.object_id = so.object_id
       WHERE    so.type = 'U'
    GROUP BY so.schema_id
    ORDER BY OBJECT_SCHEMA_NAME(so.schema_id), SizeInMB DESC

List of all user databases in SQL Server

SELECT *
FROM   master.sys.databases
WHERE  Cast(CASE WHEN name IN ('master', 'model', 'msdb', 'tempdb') THEN 1 ELSE is_distributor END As bit) = 0

SQL Script to find all Date/time columns in database

select
    so.name table_name
   ,sc.name column_name
   ,st.name data_type
from sysobjects so
inner join syscolumns sc on (so.id = sc.id)
inner join systypes st on (st.type = sc.type)
where so.type = 'U'
and st.name IN ('DATETIME', 'DATE', 'TIME')

Find last modified date of stored procedure or function in SQL server

SELECT name, create_date, modify_date
FROM sys.objects
WHERE type = 'P' order by modify_date desc

Generate Script of All indexes in a SQL Server database

SELECT ' CREATE ' +
       CASE
            WHEN I.is_unique = 1 THEN ' UNIQUE '
            ELSE ''
       END +
       I.type_desc COLLATE DATABASE_DEFAULT + ' INDEX ' +
       I.name + ' ON ' +
       SCHEMA_NAME(T.schema_id) + '.' + T.name + ' ( ' +
       KeyColumns + ' )  ' +
       ISNULL(' INCLUDE (' + IncludedColumns + ' ) ', '') +
       ISNULL(' WHERE  ' + I.filter_definition, '') + ' WITH ( ' +
       CASE
            WHEN I.is_padded = 1 THEN ' PAD_INDEX = ON '
            ELSE ' PAD_INDEX = OFF '
       END + ',' +
       'FILLFACTOR = ' + CONVERT(
           CHAR(5),
           CASE
                WHEN I.fill_factor = 0 THEN 100
                ELSE I.fill_factor
           END
       ) + ',' +
       -- default value
       'SORT_IN_TEMPDB = OFF ' + ',' +
       CASE
            WHEN I.ignore_dup_key = 1 THEN ' IGNORE_DUP_KEY = ON '
            ELSE ' IGNORE_DUP_KEY = OFF '
       END + ',' +
       CASE
            WHEN ST.no_recompute = 0 THEN ' STATISTICS_NORECOMPUTE = OFF '
            ELSE ' STATISTICS_NORECOMPUTE = ON '
       END + ',' +
       ' ONLINE = OFF ' + ',' +
       CASE
            WHEN I.allow_row_locks = 1 THEN ' ALLOW_ROW_LOCKS = ON '
            ELSE ' ALLOW_ROW_LOCKS = OFF '
       END + ',' +
       CASE
            WHEN I.allow_page_locks = 1 THEN ' ALLOW_PAGE_LOCKS = ON '
            ELSE ' ALLOW_PAGE_LOCKS = OFF '
       END + ' ) ON [' +
       DS.name + ' ] ' +  CHAR(13) + CHAR(10) + ' GO' [CreateIndexScript]
FROM   sys.indexes I
       JOIN sys.tables T
            ON  T.object_id = I.object_id
       JOIN sys.sysindexes SI
            ON  I.object_id = SI.id
            AND I.index_id = SI.indid
       JOIN (
                SELECT *
                FROM   (
                           SELECT IC2.object_id,
                                  IC2.index_id,
                                  STUFF(
                                      (
                                          SELECT ' , ' + C.name + CASE
                                                                       WHEN MAX(CONVERT(INT, IC1.is_descending_key))
                                                                            = 1 THEN
                                                                            ' DESC '
                                                                       ELSE
                                                                            ' ASC '
                                                                  END
                                          FROM   sys.index_columns IC1
                                                 JOIN sys.columns C
                                                      ON  C.object_id = IC1.object_id
                                                      AND C.column_id = IC1.column_id
                                                      AND IC1.is_included_column =
                                                          0
                                          WHERE  IC1.object_id = IC2.object_id
                                                 AND IC1.index_id = IC2.index_id
                                          GROUP BY
                                                 IC1.object_id,
                                                 C.name,
                                                 index_id
                                          ORDER BY
                                                 MAX(IC1.key_ordinal)
                                                 FOR XML PATH('')
                                      ),
                                      1,
                                      2,
                                      ''
                                  ) KeyColumns
                           FROM   sys.index_columns IC2
                                  --WHERE IC2.Object_id = object_id('Person.Address') --Comment for all tables
                           GROUP BY
                                  IC2.object_id,
                                  IC2.index_id
                       ) tmp3
            )tmp4
            ON  I.object_id = tmp4.object_id
            AND I.Index_id = tmp4.index_id
       JOIN sys.stats ST
            ON  ST.object_id = I.object_id
            AND ST.stats_id = I.index_id
       JOIN sys.data_spaces DS
            ON  I.data_space_id = DS.data_space_id
       JOIN sys.filegroups FG
            ON  I.data_space_id = FG.data_space_id
       LEFT JOIN (
                SELECT *
                FROM   (
                           SELECT IC2.object_id,
                                  IC2.index_id,
                                  STUFF(
                                      (
                                          SELECT ' , ' + C.name
                                          FROM   sys.index_columns IC1
                                                 JOIN sys.columns C
                                                      ON  C.object_id = IC1.object_id
                                                      AND C.column_id = IC1.column_id
                                                      AND IC1.is_included_column =
                                                          1
                                          WHERE  IC1.object_id = IC2.object_id
                                                 AND IC1.index_id = IC2.index_id
                                          GROUP BY
                                                 IC1.object_id,
                                                 C.name,
                                                 index_id
                                                 FOR XML PATH('')
                                      ),
                                      1,
                                      2,
                                      ''
                                  ) IncludedColumns
                           FROM   sys.index_columns IC2
                                  --WHERE IC2.Object_id = object_id('Person.Address') --Comment for all tables
                           GROUP BY
                                  IC2.object_id,
                                  IC2.index_id
                       ) tmp1
                WHERE  IncludedColumns IS NOT NULL
            ) tmp2
            ON  tmp2.object_id = I.object_id
            AND tmp2.index_id = I.index_id
WHERE  I.is_primary_key = 0
       AND I.is_unique_constraint = 0
           --AND I.Object_id = object_id('Person.Address') --Comment for all tables
           --AND I.name = 'IX_Address_PostalCode' --comment for all indexes