blob: a46d9f8cbbd40e5224ff89e008ea35a78f8fc9ff (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
module ActiveRecord
module ConnectionAdapters
module MySQL
module ColumnDumper # :nodoc:
def prepare_column_options(column)
spec = super
spec[:unsigned] = "true" if column.unsigned?
if supports_virtual_columns? && column.virtual?
spec[:as] = extract_expression_for_virtual_column(column)
spec[:stored] = "true" if /\b(?:STORED|PERSISTENT)\b/.match?(column.extra)
spec = { type: schema_type(column).inspect }.merge!(spec)
end
spec
end
def migration_keys
super + [:unsigned]
end
private
def default_primary_key?(column)
super && column.auto_increment? && !column.unsigned?
end
def explicit_primary_key_default?(column)
column.type == :integer && !column.auto_increment?
end
def schema_type(column)
case column.sql_type
when /\Atimestamp\b/
:timestamp
when "tinyblob"
:blob
else
super
end
end
def schema_precision(column)
super unless /\A(?:date)?time(?:stamp)?\b/.match?(column.sql_type) && column.precision == 0
end
def schema_collation(column)
if column.collation && table_name = column.table_name
@table_collation_cache ||= {}
@table_collation_cache[table_name] ||= exec_query("SHOW TABLE STATUS LIKE #{quote(table_name)}", "SCHEMA").first["Collation"]
column.collation.inspect if column.collation != @table_collation_cache[table_name]
end
end
def extract_expression_for_virtual_column(column)
if mariadb? && version < "10.2.5"
create_table_info = create_table_info(column.table_name)
if %r/#{quote_column_name(column.name)} #{Regexp.quote(column.sql_type)}(?: COLLATE \w+)? AS \((?<expression>.+?)\) #{column.extra}/ =~ create_table_info
$~[:expression].inspect
end
else
scope = quoted_scope(column.table_name)
sql = "SELECT generation_expression FROM information_schema.columns" \
" WHERE table_schema = #{scope[:schema]}" \
" AND table_name = #{scope[:name]}" \
" AND column_name = #{quote(column.name)}"
query_value(sql, "SCHEMA").inspect
end
end
end
end
end
end
|