Fala pessoal,
Nesse post eu gostaria de mostrar para vocês como gerar um script para exportar todos os índices do banco de dados, muito útil para migrações e configurações de novos ambientes.
Como gerar um script com todos os índices do banco de dados utilizando T-SQL
Uma das formas mais rápidas e práticas, é utilizando o script abaixo, que irá gerar um select com todos os índices que existem na base.
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/***************************************************************************** MIT License, http://www.opensource.org/licenses/mit-license.php Contact: [email protected] Copyright (c) 2018 SQL Workbooks LLC Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. https://gist.github.com/LitKnd *****************************************************************************/ SELECT DB_NAME() AS [database_name], sc.[name] + N'.' + t.[name] AS table_name, si.index_id, si.[name] AS index_name, si.[type_desc], (SELECT MAX([value].[user_reads]) FROM (VALUES (last_user_seek), (last_user_scan), (last_user_lookup)) AS value(user_reads)) AS last_user_read, [stat].[last_user_update], CASE si.index_id WHEN 0 THEN N'/* No create statement (Heap) */' ELSE CASE [si].[is_primary_key] WHEN 1 THEN N'ALTER TABLE ' + QUOTENAME(sc.name) + N'.' + QUOTENAME(t.name) + N' ADD CONSTRAINT ' + QUOTENAME(si.name) + N' PRIMARY KEY ' + CASE WHEN si.index_id > 1 THEN N'NON' ELSE N'' END + N'CLUSTERED ' ELSE N'CREATE ' + CASE WHEN [si].[is_unique] = 1 then N'UNIQUE ' ELSE N'' END + CASE WHEN si.index_id > 1 THEN N'NON' ELSE N'' END + N'CLUSTERED ' + (CASE WHEN si.[type] IN (4, 5) THEN 'COLUMNSTORE ' ELSE '' END) + N'INDEX ' + QUOTENAME(si.name) + N' ON ' + QUOTENAME(sc.name) + N'.' + QUOTENAME(t.name) + N' ' END + /* key def */ (CASE WHEN si.[type] IN (0, 1, 2) THEN N'(' + [keys].[key_definition] + N')' ELSE '' END) + /* includes */ (CASE WHEN si.[type] IN (0, 1, 2) THEN CASE WHEN [includes].[include_definition] IS NOT NULL THEN N' INCLUDE (' + [includes].[include_definition] + N')' ELSE N'' END ELSE '' END) + /* filters */ CASE WHEN [si].[filter_definition] IS NOT NULL THEN N' WHERE ' + [si].[filter_definition] ELSE N'' END + /* with clause - compression goes here */ CASE WHEN [row_compression_clause].[row_compression_partition_list] IS NOT NULL OR [page_compression_clause].[page_compression_partition_list] IS NOT NULL THEN N' WITH (' + CASE WHEN [row_compression_clause].[row_compression_partition_list] IS NOT NULL THEN N'DATA_COMPRESSION = ROW ' + CASE WHEN psc.name IS NULL THEN N'' ELSE + N' ON PARTITIONS (' + [row_compression_clause].[row_compression_partition_list] + N')' END ELSE N'' END + CASE WHEN [row_compression_clause].[row_compression_partition_list] IS NOT NULL AND [page_compression_clause].[page_compression_partition_list] IS NOT NULL THEN N', ' ELSE N'' END + CASE WHEN [page_compression_clause].[page_compression_partition_list] IS NOT NULL THEN N'DATA_COMPRESSION = PAGE ' + CASE WHEN psc.name IS NULL THEN N'' ELSE + N' ON PARTITIONS (' + [page_compression_clause].[page_compression_partition_list] + N')' END ELSE N'' END + N')' ELSE N'' END + /* ON where? filegroup? partition scheme? */ ' ON ' + CASE WHEN psc.name is null THEN ISNULL(QUOTENAME(fg.name),N'') ELSE psc.name + N' (' + [partitioning_column].[column_name] + N')' END + N';' END AS index_create_statement, [partition_sums].[reserved_in_row_GB], [partition_sums].[reserved_LOB_GB], [partition_sums].[row_count], [stat].[user_seeks], [stat].[user_scans], [stat].[user_lookups], [stat].[user_updates] AS queries_that_modified, [partition_sums].[partition_count], [si].[allow_page_locks], [si].[allow_row_locks], [si].[is_hypothetical], [si].[has_filter], [si].[fill_factor], [si].[is_unique], ISNULL(pf.name, '/* Not partitioned */') AS partition_function, ISNULL(psc.name, fg.name) AS partition_scheme_or_filegroup, t.create_date AS table_created_date, t.modify_date AS table_modify_date FROM sys.indexes AS si JOIN sys.tables AS t ON si.[object_id] = t.[object_id] JOIN sys.schemas AS sc ON t.[schema_id] = sc.[schema_id] LEFT JOIN sys.dm_db_index_usage_stats AS stat ON [stat].[database_id] = DB_ID() AND si.[object_id] = stat.[object_id] AND si.index_id=stat.index_id LEFT JOIN sys.partition_schemes AS psc ON si.data_space_id=psc.data_space_id LEFT JOIN sys.partition_functions AS pf ON psc.function_id=pf.function_id LEFT JOIN sys.filegroups AS fg ON si.data_space_id=fg.data_space_id /* Key list */ OUTER APPLY ( SELECT STUFF (( SELECT N', ' + QUOTENAME([c].[name]) + CASE [ic].[is_descending_key] WHEN 1 THEN N' DESC' ELSE N'' END FROM sys.index_columns AS ic JOIN sys.columns AS c ON ic.column_id=c.column_id and ic.[object_id] = c.[object_id] WHERE ic.[object_id] = si.[object_id] AND [ic].[index_id]=si.index_id AND [ic].[key_ordinal] > 0 ORDER BY [ic].[key_ordinal] FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,2,'' ) ) AS keys ( key_definition ) /* Partitioning Ordinal */ OUTER APPLY ( SELECT MAX(QUOTENAME([c].[name])) AS column_name FROM sys.index_columns AS ic JOIN sys.columns AS c ON ic.column_id=c.column_id and ic.[object_id]=c.[object_id] WHERE ic.[object_id] = si.[object_id] AND [ic].[index_id]=si.index_id AND [ic].[partition_ordinal] = 1 ) AS partitioning_column /* Include list */ OUTER APPLY ( SELECT STUFF (( SELECT N', ' + QUOTENAME([c].[name]) FROM sys.index_columns AS ic JOIN sys.columns AS c ON ic.column_id=c.column_id AND ic.[object_id]=c.[object_id] WHERE ic.[object_id] = si.[object_id] AND [ic].[index_id]=si.index_id AND [ic].[is_included_column] = 1 ORDER BY [c].[name] FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,2,'' ) ) AS includes ( include_definition ) /* Partitions */ OUTER APPLY ( SELECT COUNT(*) AS partition_count, CAST(SUM([ps].[in_row_reserved_page_count])*8./1024./1024. AS NUMERIC(32,1)) AS reserved_in_row_GB, CAST(SUM([ps].[lob_reserved_page_count])*8./1024./1024. AS NUMERIC(32,1)) AS reserved_LOB_GB, SUM([ps].[row_count]) AS row_count FROM sys.partitions AS p JOIN sys.dm_db_partition_stats AS ps ON p.[partition_id]=ps.[partition_id] WHERE p.[object_id] = si.[object_id] AND p.index_id=si.index_id ) AS partition_sums /* row compression list by partition */ OUTER APPLY ( SELECT STUFF (( SELECT N', ' + CAST([p].[partition_number] AS VARCHAR(32)) FROM sys.partitions AS p WHERE [p].[object_id] = si.[object_id] AND [p].[index_id]=si.index_id AND [p].[data_compression] = 1 -- row compression ORDER BY [p].[partition_number] FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,2,'' ) ) AS row_compression_clause ( row_compression_partition_list ) /* data compression list by partition */ OUTER APPLY ( SELECT STUFF (( SELECT N', ' + CAST([p].[partition_number] AS VARCHAR(32)) FROM sys.partitions AS p WHERE [p].[object_id] = si.[object_id] AND [p].[index_id]=si.index_id AND [p].[data_compression] = 2 -- page compression ORDER BY [p].[partition_number] FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,2,'' ) ) AS page_compression_clause ( page_compression_partition_list ) WHERE si.type IN (0,1,2,4,5) /* heap, clustered, nonclustered */ ORDER BY table_name, si.index_id OPTION (RECOMPILE); GO |
Resultado:
Como gerar um script com todos os índices do banco de dados utilizando o SSMS
Uma das formas mais fáceis de exportar todos os índices do banco para um script SQL, é utilizando o próprio SQL Server Management Studio (SSMS).
Para fazer isso, abra o “Object Explorer”, clique com o botão direito no banco de dados que deseja exportar os índices e selecione a opção “Tasks” e depois “Generate Scripts…”
Nessa tela que abriu, você pode avançar, e, opcionalmente, marcar a opção “Do not show this page again”, para pular essa tela de introdução na próxima vez que você for abrir esse assistente.
Na próxima tela, você pode utilizar a opção padrão “Script entire database and all database objects”, para exportar todos os objetos do banco de dados, ou clicar na opção “Select specific database objects” para selecionar apenas os objetos que você quer.
Para apenas exportar os índices, eu escolhi a opção “Select specific database objects” e marquei todas as tabelas.
Na tela abaixo, clique no botão “Advanced”, para exibir algumas opções interessantes no script gerado.
Lembre-se de ativar as opções “Script Full-Text Indexes”, “Script Indexes” e “Script Data Compression options” para uma exportação bem sucedida.
Uma opção que pode ser muito útil é a “Types of data to script”. A opção padrão é a “Schema only”, que exporta somente a definição dos objetos. Além desta opção, você pode escolher “Data only”, que exporta somente os dados (bom para fazer dump de apenas algumas tabelas) e “Schema and data”, que faz o backup tanto da definição dos objetos quanto dos dados.
Nesta tela, você pode escolher o destino do script gerado, que pode ser um notebook Jupyter, um script SQL salvo no disco, a área de trabalho ou uma nova aba no SSMS. Eu escolhi a última opção.
A próxima tela vai mostrar um resumo das ações e configurações que você selecionou nos passos anteriores
Pronto! Script de criação das tabelas e dos índices gerado com sucesso.
E é isso aí, pessoal!
Espero que tenham gostado dessa dica e até a próxima!
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