Microsoft SQL Server
Recupera informazioni sul database
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Osservazioni
Come con altri sistemi di database relazionali, SQL Server espone i metadati relativi ai database.
Questo viene fornito dallo standard INFORMATION_SCHEMA dello standard ISO o dalle viste del catalogo sys SQL Server.
Contare il numero di tabelle in un database
Questa query restituirà il numero di tabelle nel database specificato.
USE YourDatabaseName
SELECT COUNT(*) from INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
Di seguito è riportato un altro modo per eseguire tutte le tabelle utente con SQL Server 2008+. Il riferimento è qui .
SELECT COUNT(*) FROM sys.tables
Recupera un elenco di tutte le stored procedure
Le seguenti query restituiranno un elenco di tutte le stored procedure nel database, con informazioni di base su ciascuna stored procedure:
SELECT *
FROM INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_TYPE = 'PROCEDURE'
Le ROUTINE_NAME , ROUTINE_SCHEMA e ROUTINE_DEFINITION sono generalmente le più utili.
SELECT *
FROM sys.objects
WHERE type = 'P'
SELECT *
FROM sys.procedures
Si noti che questa versione ha un vantaggio sulla selezione da sys.objects poiché include le colonne aggiuntive is_auto_executed , is_execution_replicated , is_repl_serializable e skips_repl_constraints .
SELECT *
FROM sysobjects
WHERE type = 'P'
Si noti che l'output contiene molte colonne che non saranno mai correlate a una stored procedure.
La prossima serie di query restituirà tutte le stored procedure nel database che includono la stringa "SearchTerm":
SELECT o.name
FROM syscomments c
INNER JOIN sysobjects o
ON c.id=o.id
WHERE o.xtype = 'P'
AND c.TEXT LIKE '%SearchTerm%'
SELECT p.name
FROM sys.sql_modules AS m
INNER JOIN sys.procedures AS p
ON m.object_id = p.object_id
WHERE definition LIKE '%SearchTerm%'
Ottieni l'elenco di tutti i database su un server
Metodo 1: la query sottostante sarà applicabile per la versione di SQL Server 2000+ (contiene 12 colonne)
SELECT * FROM dbo.sysdatabases
Metodo 2: Sotto interrogare estrarre informazioni sui database con maggiori informazioni (es: Stato, Isolamento, modello di recupero ecc.)
Nota: questa è una vista del catalogo e sarà disponibile versioni di SQL Server 2005+
SELECT * FROM sys.databases
Metodo 3: per visualizzare solo i nomi dei database è possibile utilizzare sp_MSForEachDB non documentato
EXEC sp_MSForEachDB 'SELECT ''?'' AS DatabaseName'
Metodo 4: Sotto SP vi aiuterà a fornire le dimensioni del database insieme al nome del database, proprietario, stato ecc. Sul server
EXEC sp_helpdb
Metodo 5 Allo stesso modo, la procedura memorizzata sotto fornirà il nome del database, la dimensione del database e le Note
EXEC sp_databases
File di database
Visualizza tutti i file di dati per tutti i database con dimensioni e informazioni di crescita
SELECT d.name AS 'Database',
d.database_id,
SF.fileid,
SF.name AS 'LogicalFileName',
CASE SF.status & 0x100000
WHEN 1048576 THEN 'Percentage'
WHEN 0 THEN 'MB'
END AS 'FileGrowthOption',
Growth AS GrowthUnit,
ROUND(((CAST(Size AS FLOAT)*8)/1024)/1024,2) [SizeGB], -- Convert 8k pages to GB
Maxsize,
filename AS PhysicalFileName
FROM Master.SYS.SYSALTFILES SF
Join Master.SYS.Databases d on sf.fileid = d.database_id
Order by d.name
Recupera le opzioni del database
La seguente query restituisce le opzioni e i metadati del database:
select * from sys.databases WHERE name = 'MyDatabaseName';
Mostra la dimensione di tutte le tabelle nel database corrente
SELECT
s.name + '.' + t.NAME AS TableName,
SUM(a.used_pages)*8 AS 'TableSizeKB' --a page in SQL Server is 8kb
FROM sys.tables t
JOIN sys.schemas s on t.schema_id = s.schema_id
LEFT JOIN sys.indexes i ON t.OBJECT_ID = i.object_id
LEFT JOIN sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
LEFT JOIN sys.allocation_units a ON p.partition_id = a.container_id
GROUP BY
s.name, t.name
ORDER BY
--Either sort by name:
s.name + '.' + t.NAME
--Or sort largest to smallest:
--SUM(a.used_pages) desc
Determina il percorso di autorizzazione di un accesso di Windows
Questo mostrerà il tipo di utente e il percorso di autorizzazione (da quale gruppo di finestre l'utente ottiene le sue autorizzazioni).
xp_logininfo 'DOMAIN\user'
Recupera tabelle contenenti colonne conosciute
Questa query restituirà tutte le COLUMNS e le TABLES associate per un determinato nome di colonna. È progettato per mostrare quali tabelle (sconosciute) contengono una colonna specificata (nota)
SELECT
c.name AS ColName,
t.name AS TableName
FROM
sys.columns c
JOIN sys.tables t ON c.object_id = t.object_id
WHERE
c.name LIKE '%MyName%'
Verifica se vengono utilizzate funzionalità specifiche dell'organizzazione
A volte è utile verificare che il tuo lavoro sulla Developer Edition non abbia introdotto una dipendenza da nessuna funzionalità limitata all'edizione Enterprise.
Puoi farlo usando la vista di sistema sys.dm_db_persisted_sku_features , in questo modo:
SELECT * FROM sys.dm_db_persisted_sku_features
Contro il database stesso.
Questo elencherà le funzioni in uso, se presenti.
Cerca e restituisci tutte le tabelle e le colonne contenenti un valore di colonna specificato
Questo script, da qui e qui , restituirà tutte le tabelle e le colonne in cui esiste un valore specificato. Questo è potente per scoprire dove un determinato valore si trova in un database. Può essere tassativo, pertanto è consigliabile eseguirlo prima in un ambiente di backup / test.
DECLARE @SearchStr nvarchar(100)
SET @SearchStr = '## YOUR STRING HERE ##'
-- Copyright © 2002 Narayana Vyas Kondreddi. All rights reserved.
-- Purpose: To search all columns of all tables for a given search string
-- Written by: Narayana Vyas Kondreddi
-- Site: http://vyaskn.tripod.com
-- Updated and tested by Tim Gaunt
-- http://www.thesitedoctor.co.uk
-- http://blogs.thesitedoctor.co.uk/tim/2010/02/19/Search+Every+Table+And+Field+In+A+SQL+Server+Database+Updated.aspx
-- Tested on: SQL Server 7.0, SQL Server 2000, SQL Server 2005 and SQL Server 2010
-- Date modified: 03rd March 2011 19:00 GMT
CREATE TABLE #Results (ColumnName nvarchar(370), ColumnValue nvarchar(3630))
SET NOCOUNT ON
DECLARE @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110)
SET @TableName = ''
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''')
WHILE @TableName IS NOT NULL
BEGIN
SET @ColumnName = ''
SET @TableName =
(
SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME))
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
AND QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) > @TableName
AND OBJECTPROPERTY(
OBJECT_ID(
QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)
), 'IsMSShipped'
) = 0
)
WHILE (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL)
BEGIN
SET @ColumnName =
(
SELECT MIN(QUOTENAME(COLUMN_NAME))
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = PARSENAME(@TableName, 2)
AND TABLE_NAME = PARSENAME(@TableName, 1)
AND DATA_TYPE IN ('char', 'varchar', 'nchar', 'nvarchar', 'int', 'decimal')
AND QUOTENAME(COLUMN_NAME) > @ColumnName
)
IF @ColumnName IS NOT NULL
BEGIN
INSERT INTO #Results
EXEC
(
'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630) FROM ' + @TableName + ' (NOLOCK) ' +
' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
)
END
END
END
SELECT ColumnName, ColumnValue FROM #Results
DROP TABLE #Results
- See more at: http://thesitedoctor.co.uk/blog/search-every-table-and-field-in-a-sql-server-database-updated#sthash.bBEqfJVZ.dpuf
Ottieni tutti gli schemi, tabelle, colonne e indici
SELECT
s.name AS [schema],
t.object_id AS [table_object_id],
t.name AS [table_name],
c.column_id,
c.name AS [column_name],
i.name AS [index_name],
i.type_desc AS [index_type]
FROM sys.schemas AS s
INNER JOIN sys.tables AS t
ON s.schema_id = t.schema_id
INNER JOIN sys.columns AS c
ON t.object_id = c.object_id
LEFT JOIN sys.index_columns AS ic
ON c.object_id = ic.object_id and c.column_id = ic.column_id
LEFT JOIN sys.indexes AS i
ON ic.object_id = i.object_id and ic.index_id = i.index_id
ORDER BY [schema], [table_name], c.column_id;
Restituisce un elenco di lavori di SQL Agent, con informazioni sulla pianificazione
USE msdb
Go
SELECT dbo.sysjobs.Name AS 'Job Name',
'Job Enabled' = CASE dbo.sysjobs.Enabled
WHEN 1 THEN 'Yes'
WHEN 0 THEN 'No'
END,
'Frequency' = CASE dbo.sysschedules.freq_type
WHEN 1 THEN 'Once'
WHEN 4 THEN 'Daily'
WHEN 8 THEN 'Weekly'
WHEN 16 THEN 'Monthly'
WHEN 32 THEN 'Monthly relative'
WHEN 64 THEN 'When SQLServer Agent starts'
END,
'Start Date' = CASE active_start_date
WHEN 0 THEN null
ELSE
substring(convert(varchar(15),active_start_date),1,4) + '/' +
substring(convert(varchar(15),active_start_date),5,2) + '/' +
substring(convert(varchar(15),active_start_date),7,2)
END,
'Start Time' = CASE len(active_start_time)
WHEN 1 THEN cast('00:00:0' + right(active_start_time,2) as char(8))
WHEN 2 THEN cast('00:00:' + right(active_start_time,2) as char(8))
WHEN 3 THEN cast('00:0'
+ Left(right(active_start_time,3),1)
+':' + right(active_start_time,2) as char (8))
WHEN 4 THEN cast('00:'
+ Left(right(active_start_time,4),2)
+':' + right(active_start_time,2) as char (8))
WHEN 5 THEN cast('0'
+ Left(right(active_start_time,5),1)
+':' + Left(right(active_start_time,4),2)
+':' + right(active_start_time,2) as char (8))
WHEN 6 THEN cast(Left(right(active_start_time,6),2)
+':' + Left(right(active_start_time,4),2)
+':' + right(active_start_time,2) as char (8))
END,
CASE len(run_duration)
WHEN 1 THEN cast('00:00:0'
+ cast(run_duration as char) as char (8))
WHEN 2 THEN cast('00:00:'
+ cast(run_duration as char) as char (8))
WHEN 3 THEN cast('00:0'
+ Left(right(run_duration,3),1)
+':' + right(run_duration,2) as char (8))
WHEN 4 THEN cast('00:'
+ Left(right(run_duration,4),2)
+':' + right(run_duration,2) as char (8))
WHEN 5 THEN cast('0'
+ Left(right(run_duration,5),1)
+':' + Left(right(run_duration,4),2)
+':' + right(run_duration,2) as char (8))
WHEN 6 THEN cast(Left(right(run_duration,6),2)
+':' + Left(right(run_duration,4),2)
+':' + right(run_duration,2) as char (8))
END as 'Max Duration',
CASE(dbo.sysschedules.freq_subday_interval)
WHEN 0 THEN 'Once'
ELSE cast('Every '
+ right(dbo.sysschedules.freq_subday_interval,2)
+ ' '
+ CASE(dbo.sysschedules.freq_subday_type)
WHEN 1 THEN 'Once'
WHEN 4 THEN 'Minutes'
WHEN 8 THEN 'Hours'
END as char(16))
END as 'Subday Frequency'
FROM dbo.sysjobs
LEFT OUTER JOIN dbo.sysjobschedules
ON dbo.sysjobs.job_id = dbo.sysjobschedules.job_id
INNER JOIN dbo.sysschedules ON dbo.sysjobschedules.schedule_id = dbo.sysschedules.schedule_id
LEFT OUTER JOIN (SELECT job_id, max(run_duration) AS run_duration
FROM dbo.sysjobhistory
GROUP BY job_id) Q1
ON dbo.sysjobs.job_id = Q1.job_id
WHERE Next_run_time = 0
UNION
SELECT dbo.sysjobs.Name AS 'Job Name',
'Job Enabled' = CASE dbo.sysjobs.Enabled
WHEN 1 THEN 'Yes'
WHEN 0 THEN 'No'
END,
'Frequency' = CASE dbo.sysschedules.freq_type
WHEN 1 THEN 'Once'
WHEN 4 THEN 'Daily'
WHEN 8 THEN 'Weekly'
WHEN 16 THEN 'Monthly'
WHEN 32 THEN 'Monthly relative'
WHEN 64 THEN 'When SQLServer Agent starts'
END,
'Start Date' = CASE next_run_date
WHEN 0 THEN null
ELSE
substring(convert(varchar(15),next_run_date),1,4) + '/' +
substring(convert(varchar(15),next_run_date),5,2) + '/' +
substring(convert(varchar(15),next_run_date),7,2)
END,
'Start Time' = CASE len(next_run_time)
WHEN 1 THEN cast('00:00:0' + right(next_run_time,2) as char(8))
WHEN 2 THEN cast('00:00:' + right(next_run_time,2) as char(8))
WHEN 3 THEN cast('00:0'
+ Left(right(next_run_time,3),1)
+':' + right(next_run_time,2) as char (8))
WHEN 4 THEN cast('00:'
+ Left(right(next_run_time,4),2)
+':' + right(next_run_time,2) as char (8))
WHEN 5 THEN cast('0' + Left(right(next_run_time,5),1)
+':' + Left(right(next_run_time,4),2)
+':' + right(next_run_time,2) as char (8))
WHEN 6 THEN cast(Left(right(next_run_time,6),2)
+':' + Left(right(next_run_time,4),2)
+':' + right(next_run_time,2) as char (8))
END,
CASE len(run_duration)
WHEN 1 THEN cast('00:00:0'
+ cast(run_duration as char) as char (8))
WHEN 2 THEN cast('00:00:'
+ cast(run_duration as char) as char (8))
WHEN 3 THEN cast('00:0'
+ Left(right(run_duration,3),1)
+':' + right(run_duration,2) as char (8))
WHEN 4 THEN cast('00:'
+ Left(right(run_duration,4),2)
+':' + right(run_duration,2) as char (8))
WHEN 5 THEN cast('0'
+ Left(right(run_duration,5),1)
+':' + Left(right(run_duration,4),2)
+':' + right(run_duration,2) as char (8))
WHEN 6 THEN cast(Left(right(run_duration,6),2)
+':' + Left(right(run_duration,4),2)
+':' + right(run_duration,2) as char (8))
END as 'Max Duration',
CASE(dbo.sysschedules.freq_subday_interval)
WHEN 0 THEN 'Once'
ELSE cast('Every '
+ right(dbo.sysschedules.freq_subday_interval,2)
+ ' '
+ CASE(dbo.sysschedules.freq_subday_type)
WHEN 1 THEN 'Once'
WHEN 4 THEN 'Minutes'
WHEN 8 THEN 'Hours'
END as char(16))
END as 'Subday Frequency'
FROM dbo.sysjobs
LEFT OUTER JOIN dbo.sysjobschedules ON dbo.sysjobs.job_id = dbo.sysjobschedules.job_id
INNER JOIN dbo.sysschedules ON dbo.sysjobschedules.schedule_id = dbo.sysschedules.schedule_id
LEFT OUTER JOIN (SELECT job_id, max(run_duration) AS run_duration
FROM dbo.sysjobhistory
GROUP BY job_id) Q1
ON dbo.sysjobs.job_id = Q1.job_id
WHERE Next_run_time <> 0
ORDER BY [Start Date],[Start Time]
Recupera le informazioni sulle operazioni di backup e ripristino
Per ottenere l'elenco di tutte le operazioni di backup eseguite sull'istanza del database corrente:
SELECT sdb.Name AS DatabaseName,
COALESCE(CONVERT(VARCHAR(50), bus.backup_finish_date, 120),'-') AS LastBackUpDateTime
FROM sys.sysdatabases sdb
LEFT OUTER JOIN msdb.dbo.backupset bus ON bus.database_name = sdb.name
ORDER BY sdb.name, bus.backup_finish_date DESC
Per ottenere l'elenco di tutte le operazioni di ripristino eseguite sull'istanza del database corrente:
SELECT
[d].[name] AS database_name,
[r].restore_date AS last_restore_date,
[r].[user_name],
[bs].[backup_finish_date] AS backup_creation_date,
[bmf].[physical_device_name] AS [backup_file_used_for_restore]
FROM master.sys.databases [d]
LEFT OUTER JOIN msdb.dbo.[restorehistory] r ON r.[destination_database_name] = d.Name
INNER JOIN msdb.dbo.backupset [bs] ON [r].[backup_set_id] = [bs].[backup_set_id]
INNER JOIN msdb.dbo.backupmediafamily bmf ON [bs].[media_set_id] = [bmf].[media_set_id]
ORDER BY [d].[name], [r].restore_date DESC
Trova ogni menzione di un campo nel database
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 '%myField%'
ORDER BY 2,1
Troverà menzioni di myField in SProcs, Views, ecc.