Hi,
At the moment it is not possible to alter column with set_column_allow_null,
when column-type is text, ntext, nvarchar(MAX) or varchar(MAX).
Following sql is created.
In case of (n)text:
ALTER TABLE [test_migration] ALTER COLUMN [text_column] text(2147483647)
NULL
ALTER TABLE [test_migration] ALTER COLUMN [ntext_column] ntext(1073741823)
NULL
and in case of (n)varchar(MAX):
ALTER TABLE [test_migration] ALTER COLUMN [nvarcharmax_column] nvarchar(-1)
NULL
ALTER TABLE [test_migration] ALTER COLUMN [varcharmax_column] varchar(-1)
NULL
This would fix the Problem:
lib/sequel/adapters/shared/mssql.rb:284 (alter_table_sql(table, op))
sch = schema(table).find{|k,v| k.to_s == op[:name].to_s}.last
type = sch[:db_type]
if [:string, :decimal].include?(sch[:type]) && !["text",
"ntext"].include?(type) and size = (sch[:max_chars] || sch[:column_size])
size = "MAX" if size == -1
type += "(#{size}#{", #{sch[:scale]}" if sch[:scale] && sch[:scale].to_i
> 0})"
end
I did not found any other methods with this issue. But I'm not sure if this
is the best way to fix it.
Thanks
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