Deep Dive into Changing Database Collation

• Lowell

  SSC Guru

  Points: 323522

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  March 7, 2016 at 12:06 am

  #309183

  Comments posted to this topic are about the item Deep Dive into Changing Database Collation

  Lowell

  ---

  --help us help you! If you post a question, make sure you include a CREATE TABLE... statement and INSERT INTO... statement into that table to give the volunteers here representative data. with your description of the problem, we can provide a tested, verifiable solution to your question! asking the question the right way gets you a tested answer the fastest way possible!

• Igor Micev

  SSC-Dedicated

  Points: 33110

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  March 7, 2016 at 1:53 am

  #1863405

  Hi Lowel,

  I did a test of your work on more databases. Here are the remarks:

  The collation of a test database is not changed. I run it on the AdventureWorks2014 databases.

  On another database the following error occurred:

  Msg 8152, Level 16, State 10, Line 390

  String or binary data would be truncated.

  Need to extend the columns for the names, there are databases with indexes names longer than 100 chars.

  Then reserved words like Key, used as a column name, must be scripted as [Key].

  Another error message is the following:

  Msg 2717, Level 16, State 2, Line 395

  The size (8000) given to the parameter 'Params' exceeds the maximum allowed (4000).

  Faild on

  ALTER TABLE [dbo].[Queues] ALTER COLUMN [Params] nvarchar(8000) NOT NULL;

  but [Params] is defined as nvarchar(4000)

  You'd better add GO terminator after every ALTER statement.

  Another issue

  Msg 5074, Level 16, State 1, Line 436

  The object 'AllOddTypes' is dependent on column 'Identifier'.

  Msg 4922, Level 16, State 9, Line 436

  ALTER TABLE ALTER COLUMN Identifier failed because one or more objects access this column.

  You have to work more on the dependency problem.

  I'm sure there are many other bugs, but if you manage to eliminate these, would be better.

  And collation change on database level is not such an easy task.

  Igor Micev,My blog: www.igormicev.com

• Lowell

  SSC Guru

  Points: 323522

  More actions

  March 7, 2016 at 6:19 am

  #1863439

  Igor thank you very much for your feedback!

  Your feedback was spot on, and the extra pair of eyes helped enormously.

  because you gave such detailed feedback, i was easily able to fix the following items:

  -- 1.fixed size of #Results table allowed truncation.

  -- 2.column names in indexes and includes are now quotenamed; logic that made assumptions on column name plus comma change dto be the quotenamed column instead.

  -- 3.fixed the nvarchar columns being doubled in size issue.

  -- 4.fixed some minor whitespace issues for aliases like AS Column name and the space before "Unique" when building constraints

  -- 5.moved logic for dropping temp table sot the top so they can be interrogated more easily

  I've modified my script below, to address the items you identified, except for this one:

  Msg 5074, Level 16, State 1, Line 436

  The object 'AllOddTypes' is dependent on column 'Identifier'.

  Msg 4922, Level 16, State 9, Line 436

  ALTER TABLE ALTER COLUMN Identifier failed because one or more objects access this column.

  i'm not sure what object that is,and i think it should have been handled in the call to sp_msdependencies;

  is that in an adventureworks database? If it is not,could i trouble you to script it out? i'm guessing it might be a TVF that gets rows with odd numbered [Identifier] values.

  --#################################################################################################

  --Collation Changer Version 1.03 by Lowell

  --because of a reference to 'sys.sql_expression_dependencies', this is valid only

  --For SQL2008 and above.

  --Brainstorm: first map out a list of all the objects to change;

  --simple constraints

  --STEP_001 check constraints

  --STEP_002 default constraints

  --STEP_003 calculated column definitions

  --STEP_004 foreign key constraints

  --complex constraints and indexes (unique/pk/regular/includes/filtered indexes)

  --STEP_005 primary keys

  --STEP_006 unique indexes

  --STEP_007 regular indexes(also featuring includes or filtered indexes)

  --columns themselves

  --STEP_008 Column Collation definitions

  --views that reference any of the object tables

  --STEP_009 refresh dependent views, procs and functions

  --Version 1.01 changes:

  --2016-03-07 added improvements related to Igor Micev sggestions found here:

  -- http://www.sqlservercentral.com/Forums/Topic1767151-566-1.aspx

  -- 1.fixed size of #Results table allowed truncation.

  -- 2.column names in indexes and includes are now quotenamed; logic that made assumptions on column name plus comma change dto be the quotenamed column instead.

  -- 3.fixed the nvarchar columns being doubled in size issue.

  -- 4.fixed some minor whitespace issues for aliases like AS Column name and the space before "Unique" when building constraints

  -- 5.moved logic for dropping temp table sot the top so they can be interrogated more easily

  --Version 1.02 Changes

  --fixed case sensitive issues found by mister.magoo http://www.sqlservercentral.com/Forums/FindPost1767225.aspx

  -- 1.OBJECT_ID was wrong case lines 330,336

  -- 2.ROWS had wrong case line 332

  -- 3.sp_msdependencies ahd wrong case line 573

  --added enhancements found by Outback http://www.sqlservercentral.com/Forums/FindPost1768453.aspx

  -- 1. Foreign keys did not have ON DELETE/ON UPDATE options.

  -- 2. Added not for replication for FK as well

  -- 3. Index Creation was incorrect for unique/clustered items that were not contraints.

  --#################################################################################################

  --#################################################################################################

  --Declare and assign our lone variable

  --#################################################################################################

  DECLARE @NewCollation VARCHAR(128) = 'Latin1_General_CI_AS'; --'SQL_Latin1_General_CP1_CI_AS' -- change this to the collation that you need

  --WAS 'SQL_Latin1_General_CP1_CI_AS'

  --toggling 'Latin1_General_CI_AS'

  IF OBJECT_ID('tempdb.[dbo].[#Results]') IS NOT NULL

  DROP TABLE [dbo].[#Results];

  CREATE TABLE [dbo].[#Results] (

  [ID] INT IDENTITY(1,1) NOT NULL PRIMARY KEY,

  [ExecutionOrder] INT NOT NULL,

  [Command] NVARCHAR(max) NULL);

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  0 AS ExecutionOrder, '--Suite of commands to change collation of all columns that are not currently ' + QUOTENAME(@NewCollation) AS Command;

  --#################################################################################################

  --Start a transaction? might cause huge bloating of the transaction log, but too bad.

  --#################################################################################################

  ----INSERT INTO #Results

  ---- (ExecutionOrder,Command)

  ----SELECT 1,'SET XACT_ABORT ON' UNION ALL

  ----SELECT 2,'BEGIN TRAN' UNION ALL

  ----SELECT 1000, 'COMMIT TRAN'

  IF (SELECT

  OBJECT_ID('Tempdb.dbo.#MyAffectedTables')) IS NOT NULL

  DROP TABLE #MyAffectedTables;

  SELECT

  objz.object_id,

  SCHEMA_NAME(objz.schema_id) AS SchemaName,

  objz.name AS TableName,

  colz.name AS ColumnName,

  colz.collation_name,

  colz.column_id

  INTO

  #MyAffectedTables

  FROM sys.columns colz

  INNER JOIN sys.tables objz

  ON colz.object_id = objz.object_id

  WHERE colz.collation_name IS NOT NULL

  AND objz.is_ms_shipped = 0

  AND colz.is_computed = 0

  AND colz.collation_name <> @NewCollation;

  --AND colz.collation_name <> @NewCollation

  --#################################################################################################

  --STEP_001 check constriants

  --#################################################################################################

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  10 AS ExecutionOrder,

  CONVERT(VARCHAR(8000), 'ALTER TABLE ' + QUOTENAME(tabz.SchemaName) + '.' + QUOTENAME(tabz.TableName) + ' DROP CONSTRAINT ' + QUOTENAME(conz.name) + ';') AS Command

  FROM sys.check_constraints conz

  INNER JOIN #MyAffectedTables tabz

  ON conz.parent_object_id = tabz.object_id

  AND conz.parent_column_id = tabz.column_id;

  --add the recreation of the constraints.

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  100 AS ExecutionOrder,

  CONVERT(VARCHAR(8000), 'ALTER TABLE ' + QUOTENAME(tabz.SchemaName) + '.' + QUOTENAME(tabz.TableName) + ' ADD CONSTRAINT ' + QUOTENAME(conz.name) + ' CHECK ' + conz.definition + ';') AS Command

  FROM sys.check_constraints conz

  INNER JOIN #MyAffectedTables tabz

  ON conz.parent_object_id = tabz.object_id

  AND conz.parent_column_id = tabz.column_id;

  --#################################################################################################

  --STEP_002 default constriants

  --#################################################################################################

  /*--visualize the data

  SELECT *

  FROM sys.default_constraints conz

  INNER JOIN #MyAffectedTables tabz

  ON conz.parent_object_id = tabz.object_id

  AND conz.parent_column_id = tabz.column_id

  */

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  20 AS ExecutionOrder,

  CONVERT(VARCHAR(8000), 'ALTER TABLE ' + QUOTENAME(tabz.SchemaName) + '.' + QUOTENAME(tabz.TableName) + ' DROP CONSTRAINT ' + QUOTENAME(conz.name) + ';') AS Command

  FROM sys.default_constraints conz

  INNER JOIN #MyAffectedTables tabz

  ON conz.parent_object_id = tabz.object_id

  AND conz.parent_column_id = tabz.column_id;

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  200 AS ExecutionOrder,

  CONVERT(VARCHAR(8000), 'ALTER TABLE ' + QUOTENAME(tabz.SchemaName) + '.' + QUOTENAME(tabz.TableName) + ' ADD CONSTRAINT ' + QUOTENAME(conz.name) + ' DEFAULT ' + conz.definition + ' FOR ' + quotename(tabz.ColumnName) + ';') AS Command

  FROM sys.default_constraints conz

  INNER JOIN #MyAffectedTables tabz

  ON conz.parent_object_id = tabz.object_id

  AND conz.parent_column_id = tabz.column_id;

  --#################################################################################################

  --STEP_003 calculated columns : refering internal columns to the table

  --#################################################################################################

  --need distinct in case of a calculated columns appending two or more columns together: we need the definition only once.

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  30 AS ExecutionOrder,

  'ALTER TABLE ' + QUOTENAME(SCHEMA_NAME(objz.schema_id)) + '.' + QUOTENAME(objz.name) + ' DROP COLUMN ' + QUOTENAME(colz.name) + ';' AS Command

  FROM sys.columns colz

  LEFT OUTER JOIN sys.tables objz

  ON colz.[object_id] = objz.[object_id]

  LEFT OUTER JOIN sys.computed_columns CALC

  ON colz.[object_id] = CALC.[object_id]

  AND colz.[column_id] = CALC.[column_id]

  --only calculations referencing columns

  LEFT OUTER JOIN sys.sql_expression_dependencies depz

  ON colz.object_id = depz.referenced_id

  AND colz.column_id = depz.referencing_minor_id

  INNER JOIN #MyAffectedTables tabz

  ON depz.referenced_id = tabz.object_id

  AND depz.referenced_minor_id = tabz.column_id

  WHERE colz.is_computed = 1;

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  300 AS ExecutionOrder,

  'ALTER TABLE ' + QUOTENAME(SCHEMA_NAME(objz.schema_id)) + '.' + QUOTENAME(objz.name) + ' ADD ' + QUOTENAME(colz.name) + ' AS ' + ISNULL(CALC.definition, '')

  + CASE

  WHEN CALC.is_persisted = 1

  THEN ' PERSISTED'

  ELSE ''

  END + ';' AS Command

  FROM sys.columns colz

  LEFT OUTER JOIN sys.tables objz

  ON colz.[object_id] = objz.[object_id]

  LEFT OUTER JOIN sys.computed_columns CALC

  ON colz.[object_id] = CALC.[object_id]

  AND colz.[column_id] = CALC.[column_id]

  --only calculations referencing columns

  LEFT OUTER JOIN sys.sql_expression_dependencies depz

  ON colz.object_id = depz.referenced_id

  AND colz.column_id = depz.referencing_minor_id

  INNER JOIN #MyAffectedTables tabz

  ON depz.referenced_id = tabz.object_id

  AND depz.referenced_minor_id = tabz.column_id

  WHERE colz.is_computed = 1;

  --#################################################################################################

  --STEP_004 foreign key constriants :child references

  --#################################################################################################

  /*--visualize the data

  --at least in my case, it is very rare to have a char column as the value for a FK; my FK's are all int/bigint

  --I had to create a fake pair of tables to test this.

  */

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  40 AS ExecutionOrder,

  CONVERT(VARCHAR(8000), 'ALTER TABLE ' + QUOTENAME(tabz.SchemaName) + '.' + QUOTENAME(tabz.TableName) + ' DROP CONSTRAINT ' + QUOTENAME(conz.name) + ';') AS Command

  FROM sys.foreign_keys conz

  INNER JOIN sys.foreign_key_columns colz

  ON conz.object_id = colz.constraint_object_id

  INNER JOIN #MyAffectedTables tabz

  ON conz.parent_object_id = tabz.object_id

  WHERE tabz.object_id = colz.parent_object_id

  AND tabz.column_id = colz.parent_column_id;

  --foreign keys, potentially, can span multiple keys;

  --'scriptlet to do all FK's for reference.

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  --FK must be added AFTER the PK/unique constraints are added back.

  850 AS ExecutionOrder,

  'ALTER TABLE '

  + QUOTENAME(schema_name(conz.schema_id) )

  + '.'

  + QUOTENAME(OBJECT_NAME(conz.parent_object_id))

  + ' ADD CONSTRAINT '

  + QUOTENAME(conz.name)

  + ' FOREIGN KEY ('

  + ChildCollection.ChildColumns

  + ') REFERENCES '

  + QUOTENAME(SCHEMA_NAME(conz.schema_id))

  + '.'

  + QUOTENAME(OBJECT_NAME(conz.referenced_object_id))

  + ' (' + ParentCollection.ParentColumns

  + ') '

  + ' ON UPDATE ' + CASE conz.update_referential_action

  WHEN 0 THEN 'NO ACTION '

  WHEN 1 THEN 'CASCADE '

  WHEN 2 THEN 'SET NULL '

  ELSE 'SET DEFAULT '

  END

  + ' ON DELETE ' + CASE conz.delete_referential_action

  WHEN 0 THEN 'NO ACTION '

  WHEN 1 THEN 'CASCADE '

  WHEN 2 THEN 'SET NULL '

  ELSE 'SET DEFAULT '

  END

  + CASE conz.is_not_for_replication

  WHEN 1 THEN ' NOT FOR REPLICATION '

  ELSE ''

  END

  + ';' AS Command

  FROM sys.foreign_keys conz

  INNER JOIN sys.foreign_key_columns colz

  ON conz.object_id = colz.constraint_object_id

  INNER JOIN #MyAffectedTables tabz

  ON conz.parent_object_id = tabz.object_id

  AND tabz.column_id = colz.parent_column_id

  INNER JOIN (--gets my child tables column names

  SELECT

  conz.name,

  ChildColumns = STUFF((SELECT

  ',' + REFZ.name

  FROM sys.foreign_key_columns fkcolz

  INNER JOIN sys.columns REFZ

  ON fkcolz.parent_object_id = REFZ.object_id

  AND fkcolz.parent_column_id = REFZ.column_id

  WHERE fkcolz.parent_object_id = conz.parent_object_id

  AND fkcolz.constraint_object_id = conz.object_id

  ORDER BY

  fkcolz.constraint_column_id

  FOR XML PATH('')), 1, 1, '')

  FROM sys.foreign_keys conz

  INNER JOIN sys.foreign_key_columns colz

  ON conz.object_id = colz.constraint_object_id

  GROUP BY

  conz.name,

  conz.parent_object_id,--- without GROUP BY multiple rows are returned

  conz.object_id

  ) ChildCollection

  ON conz.name = ChildCollection.name

  INNER JOIN (--gets the parent tables column names for the FK reference

  SELECT

  conz.name,

  ParentColumns = STUFF((SELECT

  ',' + REFZ.name

  FROM sys.foreign_key_columns fkcolz

  INNER JOIN sys.columns REFZ

  ON fkcolz.referenced_object_id = REFZ.object_id

  AND fkcolz.referenced_column_id = REFZ.column_id

  WHERE fkcolz.referenced_object_id = conz.referenced_object_id

  AND fkcolz.constraint_object_id = conz.object_id

  ORDER BY fkcolz.constraint_column_id

  FOR XML PATH('')), 1, 1, '')

  FROM sys.foreign_keys conz

  INNER JOIN sys.foreign_key_columns colz

  ON conz.object_id = colz.constraint_object_id

  -- AND colz.parent_column_id

  GROUP BY

  conz.name,

  conz.referenced_object_id,--- without GROUP BY multiple rows are returned

  conz.object_id

  ) ParentCollection

  ON conz.name = ParentCollection.name;

  --#################################################################################################

  --STEP_005, 006 and 007 primary keys,unique indexes,regular indexes

  --#################################################################################################

  /*pre-quel sequel to gather the data:*/

  IF (SELECT

  OBJECT_ID('Tempdb.dbo.#Indexes')) IS NOT NULL

  DROP TABLE #Indexes;

  SELECT

  CASE

  WHEN is_primary_key = 1

  THEN 'ALTER TABLE ' + QUOTENAME(SCHEMA_NAME) + '.' + QUOTENAME(OBJECT_NAME) + ' DROP CONSTRAINT ' + QUOTENAME(index_name) + ';'

  WHEN is_unique_constraint = 1

  THEN 'ALTER TABLE ' + QUOTENAME(SCHEMA_NAME) + '.' + QUOTENAME(OBJECT_NAME) + ' DROP CONSTRAINT ' + QUOTENAME(index_name) + ';'

  ELSE 'DROP INDEX ' + +QUOTENAME(index_name) + ' ON ' + QUOTENAME(SCHEMA_NAME) + '.' + QUOTENAME(OBJECT_NAME) + ';'

  END COLLATE database_default AS c1,

  CASE

  WHEN is_primary_key = 1

  THEN 'ALTER TABLE ' + QUOTENAME(SCHEMA_NAME) + '.' + QUOTENAME(OBJECT_NAME) + ' ADD CONSTRAINT ' + QUOTENAME(index_name) + ' PRIMARY KEY '

  + CASE

  WHEN type_desc = 'CLUSTERED'

  THEN type_desc

  ELSE ''

  END + ' (' + index_columns_key + ')' + ';'

  WHEN is_unique_constraint = 1

  THEN 'ALTER TABLE ' + QUOTENAME(SCHEMA_NAME) + '.' + QUOTENAME(OBJECT_NAME) + ' ADD CONSTRAINT ' + QUOTENAME(index_name) + ' UNIQUE (' + index_columns_key + ')' + ';'

  --ELSE 'DROP INDEX IX_ProductVendor_BusinessEntityID ON Purchasing.ProductVendor WITH (ONLINE = ON, MAXDOP = 2)'

  ELSE 'CREATE '

  + CASE

  WHEN is_unique = 1

  THEN 'UNIQUE '

  ELSE ''

  END

  + CASE

  WHEN index_id = 1

  THEN 'CLUSTERED '

  ELSE ''

  END

  + 'INDEX ' + +QUOTENAME(index_name) + ' ON ' + +QUOTENAME(SCHEMA_NAME) + '.' + QUOTENAME(OBJECT_NAME) + ' (' + index_columns_key + ')'

  + CASE

  WHEN index_columns_include = '---'

  THEN ''

  ELSE ' INCLUDE (' + index_columns_include + ')'

  END

  + CASE

  WHEN has_filter = 0

  THEN ''

  ELSE ' WHERE ' + filter_definition + ' '

  END + ';'

  END COLLATE database_default AS c2,

  *

  INTO

  #INDEXES

  FROM (SELECT

  SCH.schema_id,

  SCH.[name] COLLATE database_default AS SCHEMA_NAME,

  OBJS.[object_id],

  OBJS.[name] COLLATE database_default AS OBJECT_NAME,

  IDX.index_id,

  ISNULL(IDX.[name], '---') COLLATE database_default AS index_name,

  partitions.Rows,

  partitions.SizeMB,

  INDEXPROPERTY(OBJS.[object_id], IDX.[name], 'IndexDepth') AS IndexDepth,

  IDX.type,

  IDX.type_desc COLLATE database_default AS type_desc,

  IDX.fill_factor,

  IDX.is_unique,

  IDX.is_primary_key,

  IDX.is_unique_constraint,

  IDX.has_filter,

  IDX.filter_definition,

  ISNULL(Index_Columns.index_columns_key, '---') COLLATE database_default AS index_columns_key,

  ISNULL(Index_Columns.index_columns_include, '---') COLLATE database_default AS index_columns_include

  FROM sys.objects OBJS

  INNER JOIN sys.schemas SCH

  ON OBJS.schema_id = SCH.schema_id

  INNER JOIN sys.indexes IDX

  ON OBJS.[object_id] = IDX.[object_id]

  INNER JOIN (SELECT

  [object_id],

  index_id,

  SUM(row_count) AS Rows,

  CONVERT(NUMERIC(19, 3), CONVERT(NUMERIC(19, 3), SUM(in_row_reserved_page_count+lob_reserved_page_count+row_overflow_reserved_page_count))/CONVERT(NUMERIC(19, 3), 128)) AS SizeMB

  FROM sys.dm_db_partition_stats STATS

  GROUP BY

  [object_id],

  index_id) AS partitions

  ON IDX.[object_id] = partitions.[object_id]

  AND IDX.index_id = partitions.index_id

  CROSS APPLY (SELECT

  LEFT(index_columns_key, LEN(index_columns_key) - 1) COLLATE database_default AS index_columns_key,

  LEFT(index_columns_include, LEN(index_columns_include) - 1) COLLATE database_default AS index_columns_include

  FROM (SELECT

  (SELECT

  quotename(colz.[name]) + ',' + ' ' COLLATE database_default

  FROM sys.index_columns IXCOLS

  INNER JOIN sys.columns colz

  ON IXCOLS.column_id = colz.column_id

  AND IXCOLS.[object_id] = colz.[object_id]

  WHERE IXCOLS.is_included_column = 0

  AND IDX.[object_id] = IXCOLS.[object_id]

  AND IDX.index_id = IXCOLS.index_id

  ORDER BY

  key_ordinal

  FOR XML PATH('')) AS index_columns_key,

  (SELECT

  quotename(colz.[name]) + ',' + ' ' COLLATE database_default

  FROM sys.index_columns IXCOLS

  INNER JOIN sys.columns colz

  ON IXCOLS.column_id = colz.column_id

  AND IXCOLS.[object_id] = colz.[object_id]

  WHERE IXCOLS.is_included_column = 1

  AND IDX.[object_id] = IXCOLS.[object_id]

  AND IDX.index_id = IXCOLS.index_id

  ORDER BY

  index_column_id

  FOR XML PATH('')) AS index_columns_include) AS Index_Columns) AS Index_Columns)AllIndexes

  --#################################################################################################

  --STEP_005 primary keys

  --#################################################################################################

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  50 AS ExecutionOrder,

  IDXZ.c1 AS Command

  FROM #Indexes IDXZ

  LEFT OUTER JOIN #MyAffectedTables TBLZ

  ON IDXZ.object_name = TBLZ.TableName

  WHERE is_primary_key = 1

  AND ( CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0

  OR CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0 )

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  500 AS ExecutionOrder,

  IDXZ.c2 AS Command

  FROM #Indexes IDXZ

  LEFT OUTER JOIN #MyAffectedTables TBLZ

  ON IDXZ.object_name = TBLZ.TableName

  WHERE is_primary_key = 1

  AND ( CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0

  OR CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0 )

  --#################################################################################################

  --STEP_006 unique indexes

  --#################################################################################################

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  60 AS ExecutionOrder,

  IDXZ.c1 AS Command

  FROM #Indexes IDXZ

  LEFT OUTER JOIN #MyAffectedTables TBLZ

  ON IDXZ.object_name = TBLZ.TableName

  WHERE IDXZ.is_primary_key = 0

  AND IDXZ.is_unique_constraint = 1

  AND ( CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0

  OR CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0 )

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  600 AS ExecutionOrder,

  IDXZ.c2 AS Command

  FROM #Indexes IDXZ

  LEFT OUTER JOIN #MyAffectedTables TBLZ

  ON IDXZ.object_name = TBLZ.TableName

  WHERE IDXZ.is_primary_key = 0

  AND IDXZ.is_unique_constraint = 1

  AND ( CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0

  OR CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0 )

  --#################################################################################################

  --STEP_007 regular indexes(also featuring includes or filtered indexes

  --#################################################################################################

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  70 AS ExecutionOrder,

  IDXZ.c1 AS Command

  FROM #Indexes IDXZ

  LEFT OUTER JOIN #MyAffectedTables TBLZ

  ON IDXZ.object_name = TBLZ.TableName

  WHERE IDXZ.is_primary_key = 0

  AND IDXZ.is_unique_constraint = 0

  AND ( CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0

  OR CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0 )

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  700 AS ExecutionOrder,

  IDXZ.c2 AS Command

  FROM #Indexes IDXZ

  LEFT OUTER JOIN #MyAffectedTables TBLZ

  ON IDXZ.object_name = TBLZ.TableName

  WHERE IDXZ.is_primary_key = 0

  AND IDXZ.is_unique_constraint = 0

  AND ( CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0

  OR CHARINDEX(quotename(TBLZ.ColumnName) , quotename(IDXZ.index_columns_key) ) > 0 )

  --#################################################################################################

  --STEP_008 Column Collation definitions

  --#################################################################################################

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  DISTINCT

  80 AS ExecutionOrder,

  'ALTER TABLE ' + QUOTENAME(SCHEMA_NAME(objz.schema_id)) + '.' + QUOTENAME(objz.name) + ' ALTER COLUMN '

  + CASE

  WHEN colz.[is_computed] = 0

  THEN QUOTENAME(colz.[name]) + ' ' + ( TYPE_NAME(colz.[user_type_id]) )

  + CASE

  WHEN TYPE_NAME(colz.[user_type_id]) IN ( 'char', 'varchar' )

  THEN

  CASE

  WHEN colz.[max_length] = -1

  THEN '(max)' + SPACE(6 - LEN(CONVERT(VARCHAR, colz.[max_length]))) + SPACE(7) + SPACE(16 - LEN(TYPE_NAME(colz.[user_type_id])))

  ----collate to comment out when not desired

  + CASE

  WHEN colz.collation_name IS NULL

  THEN ''

  ELSE ' COLLATE ' + @NewCollation -- this was the old collation: colz.collation_name

  END + CASE

  WHEN colz.[is_nullable] = 0

  THEN ' NOT NULL'

  ELSE ' NULL'

  END

  ELSE '(' + CONVERT(VARCHAR, colz.[max_length] ) + ') ' + SPACE(6 - LEN(CONVERT(VARCHAR, colz.[max_length]))) + SPACE(7) + SPACE(16 - LEN(TYPE_NAME(colz.[user_type_id])))

  ----collate to comment out when not desired

  + CASE

  WHEN colz.collation_name IS NULL

  THEN ''

  ELSE ' COLLATE ' + @NewCollation

  END

  + CASE

  WHEN colz.[is_nullable] = 0

  THEN ' NOT NULL'

  ELSE ' NULL'

  END

  END

  WHEN TYPE_NAME(colz.[user_type_id]) IN ( 'nchar', 'nvarchar' )

  THEN

  CASE

  WHEN colz.[max_length] = -1

  THEN '(max)' + SPACE(6 - LEN(CONVERT(VARCHAR, (colz.[max_length] / 2)))) + SPACE(7) + SPACE(16 - LEN(TYPE_NAME(colz.[user_type_id])))

  ----collate to comment out when not desired

  + CASE

  WHEN colz.collation_name IS NULL

  THEN ''

  ELSE ' COLLATE ' + @NewCollation -- this was the old collation: colz.collation_name

  END

  + CASE

  WHEN colz.[is_nullable] = 0

  THEN ' NOT NULL'

  ELSE ' NULL'

  END

  ELSE '(' + CONVERT(VARCHAR, (colz.[max_length] / 2)) + ') ' + SPACE(6 - LEN(CONVERT(VARCHAR, (colz.[max_length])))) + SPACE(7) + SPACE(16 - LEN(TYPE_NAME(colz.[user_type_id])))

  + CASE

  WHEN colz.collation_name IS NULL

  THEN ''

  ELSE ' COLLATE ' + @NewCollation -- this was the old collation: colz.collation_name

  END

  + CASE

  WHEN colz.[is_nullable] = 0

  THEN ' NOT NULL'

  ELSE ' NULL'

  END

  END

  END

  END --iscomputed = 0

  + ';' AS Command

  FROM sys.columns colz

  LEFT OUTER JOIN sys.tables objz

  ON colz.object_id = objz.object_id

  INNER JOIN #MyAffectedTables tabz

  ON tabz.object_id = colz.object_id

  AND tabz.column_id = colz.column_id

  WHERE objz.type = 'U'

  AND TYPE_NAME(colz.[user_type_id]) IN ( 'char', 'varchar', 'nchar', 'nvarchar' )

  --#################################################################################################

  --STEP_009 refresh dependent views, procs and functions

  -- refresh them in dependancy order in a single pass.

  --#################################################################################################

  --if there was nothing with the wrong collation, there's no need to refresh:

  IF (SELECT

  OBJECT_ID('Tempdb.dbo.#MyObjectHierarchy')) IS NOT NULL

  DROP TABLE #MyObjectHierarchy

  IF EXISTS(SELECT * FROM #Results WHERE ExecutionOrder > 0)

  BEGIN

  CREATE TABLE #MyObjectHierarchy

  (

  HID int identity(1,1) not null primary key,

  ObjectId int,

  TYPE int,OBJECTTYPE AS CASE

  WHEN TYPE = 1 THEN 'FUNCTION'

  WHEN TYPE = 4 THEN 'VIEW'

  WHEN TYPE = 8 THEN 'TABLE'

  WHEN TYPE = 16 THEN 'PROCEDURE'

  WHEN TYPE =128 THEN 'RULE'

  ELSE ''

  END,

  ONAME varchar(255),

  OOWNER varchar(255),

  SEQ int

  )

  --our list of objects in dependancy order

  INSERT #MyObjectHierarchy (TYPE,ONAME,OOWNER,SEQ)

  -- use this if inside a stored procedure

  -- EXEC sp_MSdependencies @intrans = 1

  --else

  EXEC sp_MSdependencies

  INSERT INTO #Results

  (ExecutionOrder,Command)

  SELECT

  900 + HID AS ExecutionOrder,

  CASE

  WHEN OBJECTTYPE = 'VIEW'

  THEN 'EXEC sp_refreshview ''' + QUOTENAME(OOWNER) + '.' + QUOTENAME(ONAME) + ''';'

  WHEN OBJECTTYPE IN ('FUNCTION' ,'PROCEDURE')

  THEN 'EXEC sp_recompile ''' + QUOTENAME(OOWNER) + '.' + QUOTENAME(ONAME) + ''';'

  END

  FROM #MyObjectHierarchy

  WHERE OBJECTTYPE IN('FUNCTION','VIEW','PROCEDURE')

  ORDER BY HID

  END --Exists

  --#################################################################################################

  --Final Presentation

  --#################################################################################################

  SELECT

  ID,ExecutionOrder,Command + CHAR(13) + CHAR(10) + 'GO' + CHAR(13) + CHAR(10)

  FROM #Results

  ORDER BY

  ExecutionOrder,

  ID

  --#################################################################################################

  --optional cursor to go ahead and run all these scripts

  --don't run this cursor unless you are 100% sure of the scripts.

  --TEST TEST TEST!

  --#################################################################################################

  /*

  declare

  @isql varchar(max)

  declare c1 cursor LOCAL FORWARD_ONLY STATIC READ_ONLY for

  --###############################################################################################

  --cursor definition

  --###############################################################################################

  SELECT

  Command

  FROM #Results

  ORDER BY

  ExecutionOrder,

  ID

  --###############################################################################################

  open c1

  fetch next from c1 into @isql

  While @@fetch_status <> -1

  begin

  print @isql

  exec(@isql)

  fetch next from c1 into @isql

  end

  close c1

  deallocate c1

  */

  Lowell

  ---

  --help us help you! If you post a question, make sure you include a CREATE TABLE... statement and INSERT INTO... statement into that table to give the volunteers here representative data. with your description of the problem, we can provide a tested, verifiable solution to your question! asking the question the right way gets you a tested answer the fastest way possible!

• mister.magoo

  SSC-Forever

  Points: 47174

  More actions

  March 7, 2016 at 6:20 am

  #1863440

  I haven't run the change scripts, but did find these issues in Version 1.0:

  Lines 330, 332, 336 : inconsistent case on column names breaks script under CS collations.

  Line 573 : incorrect case on stored procedure name breaks script under CS collations.

  See corrections:

  

  

  My test database for this generated ~80,000 change scripts, including dropping and re-creating ~2600 indexes.

  Thankfully I don't need it to change collation on this.

  MM
  

  ---

  
  select geometry::STGeomFromWKB(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