| Module | Sequel::SQLite::DatabaseMethods | 
| In: | lib/sequel/adapters/shared/sqlite.rb | 
| AUTO_VACUUM | = | [:none, :full, :incremental].freeze | 
| PRIMARY_KEY_INDEX_RE | = | /\Asqlite_autoindex_/.freeze | 
| SYNCHRONOUS | = | [:off, :normal, :full].freeze | 
| TABLES_FILTER | = | "type = 'table' AND NOT name = 'sqlite_sequence'" | 
| TEMP_STORE | = | [:default, :file, :memory].freeze | 
Run all alter_table commands in a transaction. This is technically only needed for drop column.
    # File lib/sequel/adapters/shared/sqlite.rb, line 12
12:       def alter_table(name, generator=nil, &block)
13:         remove_cached_schema(name)
14:         generator ||= Schema::AlterTableGenerator.new(self, &block)
15:         transaction{generator.operations.each{|op| alter_table_sql_list(name, [op]).flatten.each{|sql| execute_ddl(sql)}}}
16:       end
          A symbol signifying the value of the auto_vacuum PRAGMA.
    # File lib/sequel/adapters/shared/sqlite.rb, line 19
19:       def auto_vacuum
20:         AUTO_VACUUM[pragma_get(:auto_vacuum).to_i]
21:       end
          Set the auto_vacuum PRAGMA using the given symbol (:none, :full, or :incremental).
    # File lib/sequel/adapters/shared/sqlite.rb, line 25
25:       def auto_vacuum=(value)
26:         value = AUTO_VACUUM.index(value) || (raise Error, "Invalid value for auto_vacuum option. Please specify one of :none, :full, :incremental.")
27:         pragma_set(:auto_vacuum, value)
28:       end
          Return a hash containing index information. Hash keys are index name symbols. Values are subhashes with two keys, :columns and :unique. The value of :columns is an array of symbols of column names. The value of :unique is true or false depending on if the index is unique.
    # File lib/sequel/adapters/shared/sqlite.rb, line 39
39:       def indexes(table)
40:         m = output_identifier_meth
41:         im = input_identifier_meth
42:         indexes = {}
43:         begin
44:           metadata_dataset.with_sql("PRAGMA index_list(?)", im.call(table)).each do |r|
45:             next if r[:name] =~ PRIMARY_KEY_INDEX_RE
46:             indexes[m.call(r[:name])] = {:unique=>r[:unique].to_i==1}
47:           end
48:         rescue Sequel::DatabaseError
49:           nil
50:         else
51:           indexes.each do |k, v|
52:             v[:columns] = metadata_dataset.with_sql("PRAGMA index_info(?)", im.call(k)).map(:name).map{|x| m.call(x)}
53:           end
54:         end
55:         indexes
56:       end
          Get the value of the given PRAGMA.
    # File lib/sequel/adapters/shared/sqlite.rb, line 59
59:       def pragma_get(name)
60:         self["PRAGMA #{name}"].single_value
61:       end
          Set the value of the given PRAGMA to value.
    # File lib/sequel/adapters/shared/sqlite.rb, line 64
64:       def pragma_set(name, value)
65:         execute_ddl("PRAGMA #{name} = #{value}")
66:       end
          A symbol signifying the value of the synchronous PRAGMA.
    # File lib/sequel/adapters/shared/sqlite.rb, line 74
74:       def synchronous
75:         SYNCHRONOUS[pragma_get(:synchronous).to_i]
76:       end
          Set the synchronous PRAGMA using the given symbol (:off, :normal, or :full).
    # File lib/sequel/adapters/shared/sqlite.rb, line 79
79:       def synchronous=(value)
80:         value = SYNCHRONOUS.index(value) || (raise Error, "Invalid value for synchronous option. Please specify one of :off, :normal, :full.")
81:         pragma_set(:synchronous, value)
82:       end
          Array of symbols specifying the table names in the current database.
Options:
    # File lib/sequel/adapters/shared/sqlite.rb, line 88
88:       def tables(opts={})
89:         m = output_identifier_meth
90:         metadata_dataset.from(:sqlite_master).server(opts[:server]).filter(TABLES_FILTER).map{|r| m.call(r[:name])}
91:       end
          A symbol signifying the value of the temp_store PRAGMA.
    # File lib/sequel/adapters/shared/sqlite.rb, line 94
94:       def temp_store
95:         TEMP_STORE[pragma_get(:temp_store).to_i]
96:       end
          Set the temp_store PRAGMA using the given symbol (:default, :file, or :memory).
     # File lib/sequel/adapters/shared/sqlite.rb, line 99
 99:       def temp_store=(value)
100:         value = TEMP_STORE.index(value) || (raise Error, "Invalid value for temp_store option. Please specify one of :default, :file, :memory.")
101:         pragma_set(:temp_store, value)
102:       end