Tool for converting all VARCHAR to NVARCHAR in one or few steps
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I am using SQL Server Management Studio and need to convert all VARCHAR columns to NVARCHAR. Is there a tool or something similar to do the conversion in one or few steps? It should be applied to different databases.
Addition:
Excuse me, but is it possible that you gave me a script to convert NVARCHAR to VARCHAR? I need it the other way round. Also when I run the script which was produced by your script it gave me the error
Meldung 102, Ebene 15, Status 1, Zeile 1
Falsche Syntax in der Nähe von 'GO'.
multiple times. Actually I thought that the solution your script produce, to simply alter the tables doesnt work when there are constraints related to tables. Thats why I asked whether there is a tool that can do this, because I thought a simple script has restrictions.
sql-server t-sql varchar
asked Dec 12 '16 at 12:32
Eduard GeEduard Ge
63
add a comment |
I am using SQL Server Management Studio and need to convert all VARCHAR columns to NVARCHAR. Is there a tool or something similar to do the conversion in one or few steps? It should be applied to different databases.
Addition:
Excuse me, but is it possible that you gave me a script to convert NVARCHAR to VARCHAR? I need it the other way round. Also when I run the script which was produced by your script it gave me the error
Meldung 102, Ebene 15, Status 1, Zeile 1
Falsche Syntax in der Nähe von 'GO'.
multiple times. Actually I thought that the solution your script produce, to simply alter the tables doesnt work when there are constraints related to tables. Thats why I asked whether there is a tool that can do this, because I thought a simple script has restrictions.
sql-server t-sql varchar
asked Dec 12 '16 at 12:32
Eduard GeEduard Ge
63
add a comment |
I am using SQL Server Management Studio and need to convert all VARCHAR columns to NVARCHAR. Is there a tool or something similar to do the conversion in one or few steps? It should be applied to different databases.
Addition:
Excuse me, but is it possible that you gave me a script to convert NVARCHAR to VARCHAR? I need it the other way round. Also when I run the script which was produced by your script it gave me the error
Meldung 102, Ebene 15, Status 1, Zeile 1
Falsche Syntax in der Nähe von 'GO'.
multiple times. Actually I thought that the solution your script produce, to simply alter the tables doesnt work when there are constraints related to tables. Thats why I asked whether there is a tool that can do this, because I thought a simple script has restrictions.
sql-server t-sql varchar
asked Dec 12 '16 at 12:32
Eduard GeEduard Ge
63
I am using SQL Server Management Studio and need to convert all VARCHAR columns to NVARCHAR. Is there a tool or something similar to do the conversion in one or few steps? It should be applied to different databases.
Addition:
Excuse me, but is it possible that you gave me a script to convert NVARCHAR to VARCHAR? I need it the other way round. Also when I run the script which was produced by your script it gave me the error
Meldung 102, Ebene 15, Status 1, Zeile 1
Falsche Syntax in der Nähe von 'GO'.
multiple times. Actually I thought that the solution your script produce, to simply alter the tables doesnt work when there are constraints related to tables. Thats why I asked whether there is a tool that can do this, because I thought a simple script has restrictions.
sql-server t-sql varchar
sql-server t-sql varchar
asked Dec 12 '16 at 12:32
Eduard GeEduard Ge
63
asked Dec 12 '16 at 12:32
Eduard GeEduard Ge
63
edited Dec 14 '16 at 14:46
Eduard Ge
asked Dec 12 '16 at 12:32
Eduard GeEduard Ge
63
asked Dec 12 '16 at 12:32
Eduard GeEduard Ge
63
asked Dec 12 '16 at 12:32
Eduard GeEduard Ge
63
63
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
no tool needed just some good old TSQL code.
This will generate all the statements.
DECLARE @Statements table (Statement varchar(max))
DECLARE @CMD varchar(max)
DECLARE @DB varchar(500)
DECLARE c CURSOR for select distinct name from sys.databases where database_id > 4
OPEN C
FETCH NEXT FROM C into @DB
WHILE @@FETCH_STATUS = 0
BEGIN
SET @CMD = ' USE '+quotename(@DB)+';
select ''USE '+quotename(@DB)+' GO
ALTER TABLE ''+QUOTENAME(s.name)+''.''+QUOTENAME(t.name)+''
ALTER COLUMN ''+quotename(c.name)+'' varchar(''+cast(c.max_length as varchar)+'')
GO'' from '+QUOTENAME(@DB)+'.sys.tables t
inner join '+QUOTENAME(@DB)+'.sys.schemas s on s.schema_id = t.schema_id
inner join '+QUOTENAME(@DB)+'.sys.columns c on c.object_id = t.object_id
where is_ms_shipped = 0
and system_type_id = 231
'
INSERT INTO @Statements
EXEC (@CMD)
FETCH NEXT FROM C into @DB
END
CLOSE C
DEALLOCaTE C
SELECT * from @Statements
answered Dec 12 '16 at 14:02
Stijn WynantsStijn Wynants
1,506715
You could use sp_MSforeachdb instead of a cursor too. mssqltips.com/sqlservertip/1414/…
– Jorriss
Dec 12 '16 at 14:06
Indeed, but that is undocumented and sometimes gives some weird results/errors :)
– Stijn Wynants
Dec 12 '16 at 14:08
1
But so much cleaner. Don't you wish they just unleashed the hounds on that one?
– Jorriss
Dec 12 '16 at 14:37
Indeed! But I've noticed that putting my faith in msforeachdb can backfire :) have not had that yet with the DB cursor.
– Stijn Wynants
Dec 12 '16 at 14:39
add a comment |
what about varchar(max)? that will give an error using cast(c.max_length as varchar)....
answered 13 mins ago
user3365476user3365476
1
New contributor
user3365476 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
no tool needed just some good old TSQL code.
This will generate all the statements.
DECLARE @Statements table (Statement varchar(max))
DECLARE @CMD varchar(max)
DECLARE @DB varchar(500)
DECLARE c CURSOR for select distinct name from sys.databases where database_id > 4
OPEN C
FETCH NEXT FROM C into @DB
WHILE @@FETCH_STATUS = 0
BEGIN
SET @CMD = ' USE '+quotename(@DB)+';
select ''USE '+quotename(@DB)+' GO
ALTER TABLE ''+QUOTENAME(s.name)+''.''+QUOTENAME(t.name)+''
ALTER COLUMN ''+quotename(c.name)+'' varchar(''+cast(c.max_length as varchar)+'')
GO'' from '+QUOTENAME(@DB)+'.sys.tables t
inner join '+QUOTENAME(@DB)+'.sys.schemas s on s.schema_id = t.schema_id
inner join '+QUOTENAME(@DB)+'.sys.columns c on c.object_id = t.object_id
where is_ms_shipped = 0
and system_type_id = 231
'
INSERT INTO @Statements
EXEC (@CMD)
FETCH NEXT FROM C into @DB
END
CLOSE C
DEALLOCaTE C
SELECT * from @Statements
answered Dec 12 '16 at 14:02
Stijn WynantsStijn Wynants
1,506715
You could use sp_MSforeachdb instead of a cursor too. mssqltips.com/sqlservertip/1414/…
– Jorriss
Dec 12 '16 at 14:06
Indeed, but that is undocumented and sometimes gives some weird results/errors :)
– Stijn Wynants
Dec 12 '16 at 14:08
1
But so much cleaner. Don't you wish they just unleashed the hounds on that one?
– Jorriss
Dec 12 '16 at 14:37
Indeed! But I've noticed that putting my faith in msforeachdb can backfire :) have not had that yet with the DB cursor.
– Stijn Wynants
Dec 12 '16 at 14:39
add a comment |
no tool needed just some good old TSQL code.
This will generate all the statements.
DECLARE @Statements table (Statement varchar(max))
DECLARE @CMD varchar(max)
DECLARE @DB varchar(500)
DECLARE c CURSOR for select distinct name from sys.databases where database_id > 4
OPEN C
FETCH NEXT FROM C into @DB
WHILE @@FETCH_STATUS = 0
BEGIN
SET @CMD = ' USE '+quotename(@DB)+';
select ''USE '+quotename(@DB)+' GO
ALTER TABLE ''+QUOTENAME(s.name)+''.''+QUOTENAME(t.name)+''
ALTER COLUMN ''+quotename(c.name)+'' varchar(''+cast(c.max_length as varchar)+'')
GO'' from '+QUOTENAME(@DB)+'.sys.tables t
inner join '+QUOTENAME(@DB)+'.sys.schemas s on s.schema_id = t.schema_id
inner join '+QUOTENAME(@DB)+'.sys.columns c on c.object_id = t.object_id
where is_ms_shipped = 0
and system_type_id = 231
'
INSERT INTO @Statements
EXEC (@CMD)
FETCH NEXT FROM C into @DB
END
CLOSE C
DEALLOCaTE C
SELECT * from @Statements
answered Dec 12 '16 at 14:02
Stijn WynantsStijn Wynants
1,506715
You could use sp_MSforeachdb instead of a cursor too. mssqltips.com/sqlservertip/1414/…
– Jorriss
Dec 12 '16 at 14:06
Indeed, but that is undocumented and sometimes gives some weird results/errors :)
– Stijn Wynants
Dec 12 '16 at 14:08
1
But so much cleaner. Don't you wish they just unleashed the hounds on that one?
– Jorriss
Dec 12 '16 at 14:37
Indeed! But I've noticed that putting my faith in msforeachdb can backfire :) have not had that yet with the DB cursor.
– Stijn Wynants
Dec 12 '16 at 14:39
add a comment |
no tool needed just some good old TSQL code.
This will generate all the statements.
DECLARE @Statements table (Statement varchar(max))
DECLARE @CMD varchar(max)
DECLARE @DB varchar(500)
DECLARE c CURSOR for select distinct name from sys.databases where database_id > 4
OPEN C
FETCH NEXT FROM C into @DB
WHILE @@FETCH_STATUS = 0
BEGIN
SET @CMD = ' USE '+quotename(@DB)+';
select ''USE '+quotename(@DB)+' GO
ALTER TABLE ''+QUOTENAME(s.name)+''.''+QUOTENAME(t.name)+''
ALTER COLUMN ''+quotename(c.name)+'' varchar(''+cast(c.max_length as varchar)+'')
GO'' from '+QUOTENAME(@DB)+'.sys.tables t
inner join '+QUOTENAME(@DB)+'.sys.schemas s on s.schema_id = t.schema_id
inner join '+QUOTENAME(@DB)+'.sys.columns c on c.object_id = t.object_id
where is_ms_shipped = 0
and system_type_id = 231
'
INSERT INTO @Statements
EXEC (@CMD)
FETCH NEXT FROM C into @DB
END
CLOSE C
DEALLOCaTE C
SELECT * from @Statements
answered Dec 12 '16 at 14:02
Stijn WynantsStijn Wynants
1,506715
no tool needed just some good old TSQL code.
This will generate all the statements.
DECLARE @Statements table (Statement varchar(max))
DECLARE @CMD varchar(max)
DECLARE @DB varchar(500)
DECLARE c CURSOR for select distinct name from sys.databases where database_id > 4
OPEN C
FETCH NEXT FROM C into @DB
WHILE @@FETCH_STATUS = 0
BEGIN
SET @CMD = ' USE '+quotename(@DB)+';
select ''USE '+quotename(@DB)+' GO
ALTER TABLE ''+QUOTENAME(s.name)+''.''+QUOTENAME(t.name)+''
ALTER COLUMN ''+quotename(c.name)+'' varchar(''+cast(c.max_length as varchar)+'')
GO'' from '+QUOTENAME(@DB)+'.sys.tables t
inner join '+QUOTENAME(@DB)+'.sys.schemas s on s.schema_id = t.schema_id
inner join '+QUOTENAME(@DB)+'.sys.columns c on c.object_id = t.object_id
where is_ms_shipped = 0
and system_type_id = 231
'
INSERT INTO @Statements
EXEC (@CMD)
FETCH NEXT FROM C into @DB
END
CLOSE C
DEALLOCaTE C
SELECT * from @Statements
answered Dec 12 '16 at 14:02
Stijn WynantsStijn Wynants
1,506715
edited Dec 12 '16 at 14:07
answered Dec 12 '16 at 14:02
Stijn WynantsStijn Wynants
1,506715
answered Dec 12 '16 at 14:02
Stijn WynantsStijn Wynants
1,506715
answered Dec 12 '16 at 14:02
Stijn WynantsStijn Wynants
1,506715
1,506715
You could use sp_MSforeachdb instead of a cursor too. mssqltips.com/sqlservertip/1414/…
– Jorriss
Dec 12 '16 at 14:06
Indeed, but that is undocumented and sometimes gives some weird results/errors :)
– Stijn Wynants
Dec 12 '16 at 14:08
1
But so much cleaner. Don't you wish they just unleashed the hounds on that one?
– Jorriss
Dec 12 '16 at 14:37
Indeed! But I've noticed that putting my faith in msforeachdb can backfire :) have not had that yet with the DB cursor.
– Stijn Wynants
Dec 12 '16 at 14:39
add a comment |
You could use sp_MSforeachdb instead of a cursor too. mssqltips.com/sqlservertip/1414/…
– Jorriss
Dec 12 '16 at 14:06
Indeed, but that is undocumented and sometimes gives some weird results/errors :)
– Stijn Wynants
Dec 12 '16 at 14:08
1
But so much cleaner. Don't you wish they just unleashed the hounds on that one?
– Jorriss
Dec 12 '16 at 14:37
Indeed! But I've noticed that putting my faith in msforeachdb can backfire :) have not had that yet with the DB cursor.
– Stijn Wynants
Dec 12 '16 at 14:39
You could use sp_MSforeachdb instead of a cursor too. mssqltips.com/sqlservertip/1414/…
– Jorriss
Dec 12 '16 at 14:06
You could use sp_MSforeachdb instead of a cursor too. mssqltips.com/sqlservertip/1414/…
– Jorriss
Dec 12 '16 at 14:06
Indeed, but that is undocumented and sometimes gives some weird results/errors :)
– Stijn Wynants
Dec 12 '16 at 14:08
Indeed, but that is undocumented and sometimes gives some weird results/errors :)
– Stijn Wynants
Dec 12 '16 at 14:08
1
1
But so much cleaner. Don't you wish they just unleashed the hounds on that one?
– Jorriss
Dec 12 '16 at 14:37
But so much cleaner. Don't you wish they just unleashed the hounds on that one?
– Jorriss
Dec 12 '16 at 14:37
Indeed! But I've noticed that putting my faith in msforeachdb can backfire :) have not had that yet with the DB cursor.
– Stijn Wynants
Dec 12 '16 at 14:39
Indeed! But I've noticed that putting my faith in msforeachdb can backfire :) have not had that yet with the DB cursor.
– Stijn Wynants
Dec 12 '16 at 14:39
add a comment |
what about varchar(max)? that will give an error using cast(c.max_length as varchar)....
answered 13 mins ago
user3365476user3365476
1
New contributor
user3365476 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
what about varchar(max)? that will give an error using cast(c.max_length as varchar)....
answered 13 mins ago
user3365476user3365476
1
New contributor
user3365476 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
what about varchar(max)? that will give an error using cast(c.max_length as varchar)....
answered 13 mins ago
user3365476user3365476
1
New contributor
user3365476 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
what about varchar(max)? that will give an error using cast(c.max_length as varchar)....
answered 13 mins ago
user3365476user3365476
1
New contributor
user3365476 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 13 mins ago
user3365476user3365476
1
New contributor
user3365476 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 13 mins ago
user3365476user3365476
1
answered 13 mins ago
user3365476user3365476
1
1
New contributor
user3365476 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
user3365476 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
user3365476 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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