blob: 84dd28907b6ba17357121ac75db5716354661777 (
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
74
75
76
|
# frozen_string_literal: true
module ActiveRecord
module ConnectionAdapters
module PostgreSQL
class SchemaCreation < AbstractAdapter::SchemaCreation # :nodoc:
private
def visit_AlterTable(o)
super << o.constraint_validations.map { |fk| visit_ValidateConstraint fk }.join(" ")
end
def visit_AddForeignKey(o)
super.dup.tap { |sql| sql << " NOT VALID" unless o.validate? }
end
def visit_ValidateConstraint(name)
"VALIDATE CONSTRAINT #{quote_column_name(name)}"
end
def visit_ChangeColumnDefinition(o)
column = o.column
column.sql_type = type_to_sql(column.type, column.options)
quoted_column_name = quote_column_name(o.name)
change_column_sql = +"ALTER COLUMN #{quoted_column_name} TYPE #{column.sql_type}"
options = column_options(column)
if options[:collation]
change_column_sql << " COLLATE \"#{options[:collation]}\""
end
if options[:using]
change_column_sql << " USING #{options[:using]}"
elsif options[:cast_as]
cast_as_type = type_to_sql(options[:cast_as], options)
change_column_sql << " USING CAST(#{quoted_column_name} AS #{cast_as_type})"
end
if options.key?(:default)
if options[:default].nil?
change_column_sql << ", ALTER COLUMN #{quoted_column_name} DROP DEFAULT"
else
quoted_default = quote_default_expression(options[:default], column)
change_column_sql << ", ALTER COLUMN #{quoted_column_name} SET DEFAULT #{quoted_default}"
end
end
if options.key?(:null)
change_column_sql << ", ALTER COLUMN #{quoted_column_name} #{options[:null] ? 'DROP' : 'SET'} NOT NULL"
end
change_column_sql
end
def add_column_options!(sql, options)
if options[:collation]
sql << " COLLATE \"#{options[:collation]}\""
end
super
end
# Returns any SQL string to go between CREATE and TABLE. May be nil.
def table_modifier_in_create(o)
# A table cannot be both TEMPORARY and UNLOGGED, since all TEMPORARY
# tables are already UNLOGGED.
if o.temporary
" TEMPORARY"
elsif o.unlogged
" UNLOGGED"
end
end
end
end
end
end
|
