sql - 如何通过 SQL Server 上的数据库名称获取所有数据库的索引名称
问题描述
标题几乎总结了我正在寻找的东西。所以我正在寻找一些关于 sql 索引的元信息,例如。表名、架构名、数据库名。
SELECT
TableName = t.name,
IndexName = ind.name,
IndexId = ind.index_id,
ColumnId = ic.index_column_id,
ColumnName = col.name,
SchemaName = s.name
FROM
sys.indexes ind
INNER JOIN
sys.index_columns ic ON ind.object_id = ic.object_id and ind.index_id = ic.index_id
INNER JOIN
sys.columns col ON ic.object_id = col.object_id and ic.column_id = col.column_id
INNER JOIN
sys.tables t ON ind.object_id = t.object_id
INNER JOIN
sys.schemas s ON t.schema_id = s.schema_id
WHERE
ind.name = 'testindex'
ORDER BY
t.name, ind.name, ind.index_id, ic.index_column_id;
到目前为止,我已经设法为索引获取 TableName 和 SchemaName,但是我不知道如何获取数据库名称。
解决方案
使用Aaron Bertrand 的脚本来制作更可靠和灵活的sp_MSforeachdb
,您可以使用带有修改的查询。
您将需要使用它、游标或其他方法来遍历服务器上的所有数据库。这是我见过的最好的之一,因为正如 Aaron 所指出的,微软的版本可以跳过数据库。
sp_foreachdb 方法
CREATE PROCEDURE dbo.sp_foreachdb
@command NVARCHAR(MAX),
@replace_character NCHAR(1) = N'?',
@print_dbname BIT = 0,
@print_command_only BIT = 0,
@suppress_quotename BIT = 0,
@system_only BIT = NULL,
@user_only BIT = NULL,
@name_pattern NVARCHAR(300) = N'%',
@database_list NVARCHAR(MAX) = NULL,
@recovery_model_desc NVARCHAR(120) = NULL,
@compatibility_level TINYINT = NULL,
@state_desc NVARCHAR(120) = N'ONLINE',
@is_read_only BIT = 0,
@is_auto_close_on BIT = NULL,
@is_auto_shrink_on BIT = NULL,
@is_broker_enabled BIT = NULL
AS
BEGIN
SET NOCOUNT ON;
DECLARE
@sql NVARCHAR(MAX),
@dblist NVARCHAR(MAX),
@db NVARCHAR(300),
@i INT;
IF @database_list > N''
BEGIN
;WITH n(n) AS
(
SELECT ROW_NUMBER() OVER (ORDER BY s1.name) - 1
FROM sys.objects AS s1
CROSS JOIN sys.objects AS s2
)
SELECT @dblist = REPLACE(REPLACE(REPLACE(x,'</x><x>',','),
'</x>',''),'<x>','')
FROM
(
SELECT DISTINCT x = 'N''' + LTRIM(RTRIM(SUBSTRING(
@database_list, n,
CHARINDEX(',', @database_list + ',', n) - n))) + ''''
FROM n WHERE n <= LEN(@database_list)
AND SUBSTRING(',' + @database_list, n, 1) = ','
FOR XML PATH('')
) AS y(x);
END
CREATE TABLE #x(db NVARCHAR(300));
SET @sql = N'SELECT name FROM sys.databases WHERE 1=1'
+ CASE WHEN @system_only = 1 THEN
' AND database_id IN (1,2,3,4)'
ELSE '' END
+ CASE WHEN @user_only = 1 THEN
' AND database_id NOT IN (1,2,3,4)'
ELSE '' END
+ CASE WHEN @name_pattern <> N'%' THEN
' AND name LIKE N''%' + REPLACE(@name_pattern, '''', '''''') + '%'''
ELSE '' END
+ CASE WHEN @dblist IS NOT NULL THEN
' AND name IN (' + @dblist + ')'
ELSE '' END
+ CASE WHEN @recovery_model_desc IS NOT NULL THEN
' AND recovery_model_desc = N''' + @recovery_model_desc + ''''
ELSE '' END
+ CASE WHEN @compatibility_level IS NOT NULL THEN
' AND compatibility_level = ' + RTRIM(@compatibility_level)
ELSE '' END
+ CASE WHEN @state_desc IS NOT NULL THEN
' AND state_desc = N''' + @state_desc + ''''
ELSE '' END
+ CASE WHEN @is_read_only IS NOT NULL THEN
' AND is_read_only = ' + RTRIM(@is_read_only)
ELSE '' END
+ CASE WHEN @is_auto_close_on IS NOT NULL THEN
' AND is_auto_close_on = ' + RTRIM(@is_auto_close_on)
ELSE '' END
+ CASE WHEN @is_auto_shrink_on IS NOT NULL THEN
' AND is_auto_shrink_on = ' + RTRIM(@is_auto_shrink_on)
ELSE '' END
+ CASE WHEN @is_broker_enabled IS NOT NULL THEN
' AND is_broker_enabled = ' + RTRIM(@is_broker_enabled)
ELSE '' END;
INSERT #x EXEC sp_executesql @sql;
DECLARE c CURSOR
LOCAL FORWARD_ONLY STATIC READ_ONLY
FOR SELECT CASE WHEN @suppress_quotename = 1 THEN
db
ELSE
QUOTENAME(db)
END
FROM #x ORDER BY db;
OPEN c;
FETCH NEXT FROM c INTO @db;
WHILE @@FETCH_STATUS = 0
BEGIN
SET @sql = REPLACE(@command, @replace_character, @db);
IF @print_command_only = 1
BEGIN
PRINT '/* For ' + @db + ': */'
+ CHAR(13) + CHAR(10) + CHAR(13) + CHAR(10)
+ @sql
+ CHAR(13) + CHAR(10) + CHAR(13) + CHAR(10);
END
ELSE
BEGIN
IF @print_dbname = 1
BEGIN
PRINT '/* ' + @db + ' */';
END
EXEC sp_executesql @sql;
END
FETCH NEXT FROM c INTO @db;
END
CLOSE c;
DEALLOCATE c;
END
Proc的执行
EXEC sp_foreachdb
@command = 'SELECT
DBNAME = ''?'',
TableName = t.name,
IndexName = ind.name,
IndexId = ind.index_id,
ColumnId = ic.index_column_id,
ColumnName = col.name,
SchemaName = s.name
FROM
?.sys.indexes ind
INNER JOIN
?.sys.index_columns ic ON ind.object_id = ic.object_id and ind.index_id = ic.index_id
INNER JOIN
?.sys.columns col ON ic.object_id = col.object_id and ic.column_id = col.column_id
INNER JOIN
?.sys.tables t ON ind.object_id = t.object_id
INNER JOIN
?.sys.schemas s ON t.schema_id = s.schema_id
ORDER BY
t.name, ind.name, ind.index_id, ic.index_column_id'
,@print_command_only = 0
无过程和无光标方法
感谢Sean Lange提醒我如何使用变量连接的技巧来不使用游标或过程,并完成相同的任务。
declare @sql varchar(max) = ''
select @sql = @sql
+ 'use '
+ quotename(name)
+ char(13)
+ 'select DBNAME = '''
+ name
+ ''',
TableName = t.name,
IndexName = ind.name,
IndexId = ind.index_id,
ColumnId = ic.index_column_id,
ColumnName = col.name,
SchemaName = s.name
FROM
sys.indexes ind
INNER JOIN
sys.index_columns ic ON ind.object_id = ic.object_id and ind.index_id = ic.index_id
INNER JOIN
sys.columns col ON ic.object_id = col.object_id and ic.column_id = col.column_id
INNER JOIN
sys.tables t ON ind.object_id = t.object_id
INNER JOIN
sys.schemas s ON t.schema_id = s.schema_id; '
+ char(13)
from sys.databases
where state = 0
exec(@sql)
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