class ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter

Constants

ER_CANNOT_ADD_FOREIGN
ER_CANNOT_CREATE_TABLE
ER_DATA_TOO_LONG
ER_DB_CREATE_EXISTS

See dev.mysql.com/doc/mysql-errors/en/server-error-reference.html

ER_DO_NOT_HAVE_DEFAULT
ER_DUP_ENTRY
ER_FILSORT_ABORT
ER_FK_INCOMPATIBLE_COLUMNS
ER_LOCK_DEADLOCK
ER_LOCK_WAIT_TIMEOUT
ER_NOT_NULL_VIOLATION
ER_NO_REFERENCED_ROW
ER_NO_REFERENCED_ROW_2
ER_OUT_OF_RANGE
ER_QUERY_INTERRUPTED
ER_QUERY_TIMEOUT
ER_ROW_IS_REFERENCED
ER_ROW_IS_REFERENCED_2
NATIVE_DATABASE_TYPES
TYPE_MAP
TYPE_MAP_WITH_BOOLEAN

Public Class Methods

emulate_booleans() click to toggle source

By default, the Mysql2Adapter will consider all columns of type tinyint(1) as boolean. If you wish to disable this emulation you can add the following line to your application.rb file:

ActiveRecord::ConnectionAdapters::Mysql2Adapter.emulate_booleans = false
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 27
class_attribute :emulate_booleans, default: true
new(connection, logger, connection_options, config) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 54
def initialize(connection, logger, connection_options, config)
  super(connection, logger, config)
end

Private Class Methods

extract_precision(sql_type) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 603
def extract_precision(sql_type)
  if /\A(?:date)?time(?:stamp)?\b/.match?(sql_type)
    super || 0
  else
    super
  end
end
initialize_type_map(m) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 561
def initialize_type_map(m)
  super

  m.register_type(%r(char)i) do |sql_type|
    limit = extract_limit(sql_type)
    Type.lookup(:string, adapter: :mysql2, limit: limit)
  end

  m.register_type %r(tinytext)i,   Type::Text.new(limit: 2**8 - 1)
  m.register_type %r(tinyblob)i,   Type::Binary.new(limit: 2**8 - 1)
  m.register_type %r(text)i,       Type::Text.new(limit: 2**16 - 1)
  m.register_type %r(blob)i,       Type::Binary.new(limit: 2**16 - 1)
  m.register_type %r(mediumtext)i, Type::Text.new(limit: 2**24 - 1)
  m.register_type %r(mediumblob)i, Type::Binary.new(limit: 2**24 - 1)
  m.register_type %r(longtext)i,   Type::Text.new(limit: 2**32 - 1)
  m.register_type %r(longblob)i,   Type::Binary.new(limit: 2**32 - 1)
  m.register_type %r(^float)i,     Type::Float.new(limit: 24)
  m.register_type %r(^double)i,    Type::Float.new(limit: 53)

  register_integer_type m, %r(^bigint)i,    limit: 8
  register_integer_type m, %r(^int)i,       limit: 4
  register_integer_type m, %r(^mediumint)i, limit: 3
  register_integer_type m, %r(^smallint)i,  limit: 2
  register_integer_type m, %r(^tinyint)i,   limit: 1

  m.alias_type %r(year)i, "integer"
  m.alias_type %r(bit)i,  "binary"

  m.register_type %r(^enum)i, Type.lookup(:string, adapter: :mysql2)
  m.register_type %r(^set)i,  Type.lookup(:string, adapter: :mysql2)
end
register_integer_type(mapping, key, **options) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 593
def register_integer_type(mapping, key, **options)
  mapping.register_type(key) do |sql_type|
    if /\bunsigned\b/.match?(sql_type)
      Type::UnsignedInteger.new(**options)
    else
      Type::Integer.new(**options)
    end
  end
end

Public Instance Methods

charset() click to toggle source

Returns the database character set.

# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 269
def charset
  show_variable "character_set_database"
end
check_constraints(table_name) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 413
      def check_constraints(table_name)
        if supports_check_constraints?
          scope = quoted_scope(table_name)

          sql = <<~SQL
            SELECT cc.constraint_name AS 'name',
                  cc.check_clause AS 'expression'
            FROM information_schema.check_constraints cc
            JOIN information_schema.table_constraints tc
            USING (constraint_schema, constraint_name)
            WHERE tc.table_schema = #{scope[:schema]}
              AND tc.table_name = #{scope[:name]}
              AND cc.constraint_schema = #{scope[:schema]}
          SQL
          sql += " AND cc.table_name = #{scope[:name]}" if mariadb?

          chk_info = exec_query(sql, "SCHEMA")

          chk_info.map do |row|
            options = {
              name: row["name"]
            }
            expression = row["expression"]
            expression = expression[1..-2] if expression.start_with?("(") && expression.end_with?(")")
            expression = strip_whitespace_characters(expression)
            CheckConstraintDefinition.new(table_name, expression, options)
          end
        else
          raise NotImplementedError
        end
      end
collation() click to toggle source

Returns the database collation strategy.

# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 274
def collation
  show_variable "collation_database"
end
create_database(name, options = {}) click to toggle source

Create a new MySQL database with optional :charset and :collation. Charset defaults to utf8mb4.

Example:

create_database 'charset_test', charset: 'latin1', collation: 'latin1_bin'
create_database 'matt_development'
create_database 'matt_development', charset: :big5
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 244
def create_database(name, options = {})
  if options[:collation]
    execute "CREATE DATABASE #{quote_table_name(name)} DEFAULT COLLATE #{quote_table_name(options[:collation])}"
  elsif options[:charset]
    execute "CREATE DATABASE #{quote_table_name(name)} DEFAULT CHARACTER SET #{quote_table_name(options[:charset])}"
  elsif row_format_dynamic_by_default?
    execute "CREATE DATABASE #{quote_table_name(name)} DEFAULT CHARACTER SET `utf8mb4`"
  else
    raise "Configure a supported :charset and ensure innodb_large_prefix is enabled to support indexes on varchar(255) string columns."
  end
end
current_database() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 264
def current_database
  query_value("SELECT database()", "SCHEMA")
end
drop_table(table_name, **options) click to toggle source

Drops a table from the database.

:force

Set to :cascade to drop dependent objects as well. Defaults to false.

:if_exists

Set to true to only drop the table if it exists. Defaults to false.

:temporary

Set to true to drop temporary table. Defaults to false.

Although this command ignores most options and the block if one is given, it can be helpful to provide these in a migration’s change method so it can be reverted. In that case, options and the block will be used by create_table.

# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 321
def drop_table(table_name, **options)
  schema_cache.clear_data_source_cache!(table_name.to_s)
  execute "DROP#{' TEMPORARY' if options[:temporary]} TABLE#{' IF EXISTS' if options[:if_exists]} #{quote_table_name(table_name)}#{' CASCADE' if options[:force] == :cascade}"
end
execute(sql, name = nil, async: false) click to toggle source

Executes the SQL statement in the context of this connection.

# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 194
def execute(sql, name = nil, async: false)
  raw_execute(sql, name, async: async)
end
foreign_keys(table_name) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 377
      def foreign_keys(table_name)
        raise ArgumentError unless table_name.present?

        scope = quoted_scope(table_name)

        fk_info = exec_query(<<~SQL, "SCHEMA")
          SELECT fk.referenced_table_name AS 'to_table',
                 fk.referenced_column_name AS 'primary_key',
                 fk.column_name AS 'column',
                 fk.constraint_name AS 'name',
                 rc.update_rule AS 'on_update',
                 rc.delete_rule AS 'on_delete'
          FROM information_schema.referential_constraints rc
          JOIN information_schema.key_column_usage fk
          USING (constraint_schema, constraint_name)
          WHERE fk.referenced_column_name IS NOT NULL
            AND fk.table_schema = #{scope[:schema]}
            AND fk.table_name = #{scope[:name]}
            AND rc.constraint_schema = #{scope[:schema]}
            AND rc.table_name = #{scope[:name]}
        SQL

        fk_info.map do |row|
          options = {
            column: unquote_identifier(row["column"]),
            name: row["name"],
            primary_key: row["primary_key"]
          }

          options[:on_update] = extract_foreign_key_action(row["on_update"])
          options[:on_delete] = extract_foreign_key_action(row["on_delete"])

          ForeignKeyDefinition.new(table_name, unquote_identifier(row["to_table"]), options)
        end
      end
index_algorithms() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 153
def index_algorithms
  {
    default: "ALGORITHM = DEFAULT",
    copy:    "ALGORITHM = COPY",
    inplace: "ALGORITHM = INPLACE",
    instant: "ALGORITHM = INSTANT",
  }
end
native_database_types() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 149
def native_database_types
  NATIVE_DATABASE_TYPES
end
recreate_database(name, options = {}) click to toggle source

Drops the database specified on the name attribute and creates it again using the provided options.

# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 230
def recreate_database(name, options = {})
  drop_database(name)
  sql = create_database(name, options)
  reconnect!
  sql
end
rename_index(table_name, old_name, new_name) click to toggle source
Calls superclass method
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 326
def rename_index(table_name, old_name, new_name)
  if supports_rename_index?
    validate_index_length!(table_name, new_name)

    execute "ALTER TABLE #{quote_table_name(table_name)} RENAME INDEX #{quote_table_name(old_name)} TO #{quote_table_name(new_name)}"
  else
    super
  end
end
rename_table(table_name, new_name) click to toggle source

Renames a table.

Example:

rename_table('octopuses', 'octopi')
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 299
def rename_table(table_name, new_name)
  schema_cache.clear_data_source_cache!(table_name.to_s)
  schema_cache.clear_data_source_cache!(new_name.to_s)
  execute "RENAME TABLE #{quote_table_name(table_name)} TO #{quote_table_name(new_name)}"
  rename_table_indexes(table_name, new_name)
end
show_variable(name) click to toggle source

SHOW VARIABLES LIKE ‘name’

# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 475
def show_variable(name)
  query_value("SELECT @@#{name}", "SCHEMA")
rescue ActiveRecord::StatementInvalid
  nil
end
strict_mode?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 526
def strict_mode?
  self.class.type_cast_config_to_boolean(@config.fetch(:strict, true))
end
supports_advisory_locks?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 129
def supports_advisory_locks?
  true
end
supports_bulk_alter?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 68
def supports_bulk_alter?
  true
end
supports_check_constraints?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 96
def supports_check_constraints?
  if mariadb?
    database_version >= "10.2.1"
  else
    database_version >= "8.0.16"
  end
end
supports_common_table_expressions?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 121
def supports_common_table_expressions?
  if mariadb?
    database_version >= "10.2.1"
  else
    database_version >= "8.0.1"
  end
end
supports_datetime_with_precision?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 108
def supports_datetime_with_precision?
  mariadb? || database_version >= "5.6.4"
end
supports_explain?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 84
def supports_explain?
  true
end
supports_expression_index?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 76
def supports_expression_index?
  !mariadb? && database_version >= "8.0.13"
end
supports_foreign_keys?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 92
def supports_foreign_keys?
  true
end
supports_index_sort_order?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 72
def supports_index_sort_order?
  !mariadb? && database_version >= "8.0.1"
end
supports_indexes_in_create?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 88
def supports_indexes_in_create?
  true
end
supports_insert_on_duplicate_skip?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 133
def supports_insert_on_duplicate_skip?
  true
end
supports_insert_on_duplicate_update?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 137
def supports_insert_on_duplicate_update?
  true
end
supports_optimizer_hints?() click to toggle source

See dev.mysql.com/doc/refman/en/optimizer-hints.html for more details.

# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 117
def supports_optimizer_hints?
  !mariadb? && database_version >= "5.7.7"
end
supports_transaction_isolation?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 80
def supports_transaction_isolation?
  true
end
supports_views?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 104
def supports_views?
  true
end
supports_virtual_columns?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 112
def supports_virtual_columns?
  mariadb? || database_version >= "5.7.5"
end

Private Instance Methods

add_index_for_alter(table_name, column_name, **options) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 750
def add_index_for_alter(table_name, column_name, **options)
  index, algorithm, _ = add_index_options(table_name, column_name, **options)
  algorithm = ", #{algorithm}" if algorithm

  "ADD #{schema_creation.accept(index)}#{algorithm}"
end
arel_visitor() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 840
def arel_visitor
  Arel::Visitors::MySQL.new(self)
end
build_statement_pool() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 844
def build_statement_pool
  StatementPool.new(self.class.type_cast_config_to_integer(@config[:statement_limit]))
end
can_perform_case_insensitive_comparison_for?(column) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 506
def can_perform_case_insensitive_comparison_for?(column)
  column.case_sensitive?
end
change_column_for_alter(table_name, column_name, type, **options) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 704
def change_column_for_alter(table_name, column_name, type, **options)
  column = column_for(table_name, column_name)
  type ||= column.sql_type

  unless options.key?(:default)
    options[:default] = column.default
  end

  unless options.key?(:null)
    options[:null] = column.null
  end

  unless options.key?(:comment)
    options[:comment] = column.comment
  end

  unless options.key?(:collation)
    options[:collation] = column.collation if text_type?(type)
  end

  unless options.key?(:auto_increment)
    options[:auto_increment] = column.auto_increment?
  end

  td = create_table_definition(table_name)
  cd = td.new_column_definition(column.name, type, **options)
  schema_creation.accept(ChangeColumnDefinition.new(cd, column.name))
end
configure_connection() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 778
def configure_connection
  variables = @config.fetch(:variables, {}).stringify_keys

  # By default, MySQL 'where id is null' selects the last inserted id; Turn this off.
  variables["sql_auto_is_null"] = 0

  # Increase timeout so the server doesn't disconnect us.
  wait_timeout = self.class.type_cast_config_to_integer(@config[:wait_timeout])
  wait_timeout = 2147483 unless wait_timeout.is_a?(Integer)
  variables["wait_timeout"] = wait_timeout

  defaults = [":default", :default].to_set

  # Make MySQL reject illegal values rather than truncating or blanking them, see
  # https://dev.mysql.com/doc/refman/en/sql-mode.html#sqlmode_strict_all_tables
  # If the user has provided another value for sql_mode, don't replace it.
  if sql_mode = variables.delete("sql_mode")
    sql_mode = quote(sql_mode)
  elsif !defaults.include?(strict_mode?)
    if strict_mode?
      sql_mode = "CONCAT(@@sql_mode, ',STRICT_ALL_TABLES')"
    else
      sql_mode = "REPLACE(@@sql_mode, 'STRICT_TRANS_TABLES', '')"
      sql_mode = "REPLACE(#{sql_mode}, 'STRICT_ALL_TABLES', '')"
      sql_mode = "REPLACE(#{sql_mode}, 'TRADITIONAL', '')"
    end
    sql_mode = "CONCAT(#{sql_mode}, ',NO_AUTO_VALUE_ON_ZERO')"
  end
  sql_mode_assignment = "@@SESSION.sql_mode = #{sql_mode}, " if sql_mode

  # NAMES does not have an equals sign, see
  # https://dev.mysql.com/doc/refman/en/set-names.html
  # (trailing comma because variable_assignments will always have content)
  if @config[:encoding]
    encoding = +"NAMES #{@config[:encoding]}"
    encoding << " COLLATE #{@config[:collation]}" if @config[:collation]
    encoding << ", "
  end

  # Gather up all of the SET variables...
  variable_assignments = variables.filter_map do |k, v|
    if defaults.include?(v)
      "@@SESSION.#{k} = DEFAULT" # Sets the value to the global or compile default
    elsif !v.nil?
      "@@SESSION.#{k} = #{quote(v)}"
    end
  end.join(", ")

  # ...and send them all in one query
  execute("SET #{encoding} #{sql_mode_assignment} #{variable_assignments}", "SCHEMA")
end
mismatched_foreign_key(message, sql:, binds:) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 848
def mismatched_foreign_key(message, sql:, binds:)
  match = %r/
    (?:CREATE|ALTER)\s+TABLE\s*(?:`?\w+`?\.)?`?(?<table>\w+)`?.+?
    FOREIGN\s+KEY\s*\(`?(?<foreign_key>\w+)`?\)\s*
    REFERENCES\s*(`?(?<target_table>\w+)`?)\s*\(`?(?<primary_key>\w+)`?\)
  /xmi.match(sql)

  options = {
    message: message,
    sql: sql,
    binds: binds,
  }

  if match
    options[:table] = match[:table]
    options[:foreign_key] = match[:foreign_key]
    options[:target_table] = match[:target_table]
    options[:primary_key] = match[:primary_key]
    options[:primary_key_column] = column_for(match[:target_table], match[:primary_key])
  end

  MismatchedForeignKey.new(**options)
end
raw_execute(sql, name, async: false) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 632
def raw_execute(sql, name, async: false)
  materialize_transactions
  mark_transaction_written_if_write(sql)

  log(sql, name, async: async) do
    ActiveSupport::Dependencies.interlock.permit_concurrent_loads do
      @connection.query(sql)
    end
  end
end
remove_index_for_alter(table_name, column_name = nil, **options) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 757
def remove_index_for_alter(table_name, column_name = nil, **options)
  index_name = index_name_for_remove(table_name, column_name, options)
  "DROP INDEX #{quote_column_name(index_name)}"
end
rename_column_for_alter(table_name, column_name, new_column_name) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 733
def rename_column_for_alter(table_name, column_name, new_column_name)
  return rename_column_sql(table_name, column_name, new_column_name) if supports_rename_column?

  column  = column_for(table_name, column_name)
  options = {
    default: column.default,
    null: column.null,
    auto_increment: column.auto_increment?,
    comment: column.comment
  }

  current_type = exec_query("SHOW COLUMNS FROM #{quote_table_name(table_name)} LIKE #{quote(column_name)}", "SCHEMA").first["Type"]
  td = create_table_definition(table_name)
  cd = td.new_column_definition(new_column_name, current_type, **options)
  schema_creation.accept(ChangeColumnDefinition.new(cd, column.name))
end
strip_whitespace_characters(expression) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 618
def strip_whitespace_characters(expression)
  expression = expression.gsub(/\\n|\\\\/, "")
  expression = expression.gsub(/\s{2,}/, " ")
  expression
end
supports_rename_column?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 770
def supports_rename_column?
  if mariadb?
    database_version >= "10.5.2"
  else
    database_version >= "8.0.3"
  end
end
supports_rename_index?() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 762
def supports_rename_index?
  if mariadb?
    database_version >= "10.5.2"
  else
    database_version >= "5.7.6"
  end
end
text_type?(type) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 624
def text_type?(type)
  TYPE_MAP.lookup(type).is_a?(Type::String) || TYPE_MAP.lookup(type).is_a?(Type::Text)
end
translate_exception(exception, message:, sql:, binds:) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 663
def translate_exception(exception, message:, sql:, binds:)
  case error_number(exception)
  when nil
    if exception.message.match?(/MySQL client is not connected/i)
      ConnectionNotEstablished.new(exception)
    else
      super
    end
  when ER_DB_CREATE_EXISTS
    DatabaseAlreadyExists.new(message, sql: sql, binds: binds)
  when ER_DUP_ENTRY
    RecordNotUnique.new(message, sql: sql, binds: binds)
  when ER_NO_REFERENCED_ROW, ER_ROW_IS_REFERENCED, ER_ROW_IS_REFERENCED_2, ER_NO_REFERENCED_ROW_2
    InvalidForeignKey.new(message, sql: sql, binds: binds)
  when ER_CANNOT_ADD_FOREIGN, ER_FK_INCOMPATIBLE_COLUMNS
    mismatched_foreign_key(message, sql: sql, binds: binds)
  when ER_CANNOT_CREATE_TABLE
    if message.include?("errno: 150")
      mismatched_foreign_key(message, sql: sql, binds: binds)
    else
      super
    end
  when ER_DATA_TOO_LONG
    ValueTooLong.new(message, sql: sql, binds: binds)
  when ER_OUT_OF_RANGE
    RangeError.new(message, sql: sql, binds: binds)
  when ER_NOT_NULL_VIOLATION, ER_DO_NOT_HAVE_DEFAULT
    NotNullViolation.new(message, sql: sql, binds: binds)
  when ER_LOCK_DEADLOCK
    Deadlocked.new(message, sql: sql, binds: binds)
  when ER_LOCK_WAIT_TIMEOUT
    LockWaitTimeout.new(message, sql: sql, binds: binds)
  when ER_QUERY_TIMEOUT, ER_FILSORT_ABORT
    StatementTimeout.new(message, sql: sql, binds: binds)
  when ER_QUERY_INTERRUPTED
    QueryCanceled.new(message, sql: sql, binds: binds)
  else
    super
  end
end
type_map() click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 628
def type_map
  emulate_booleans ? TYPE_MAP_WITH_BOOLEAN : TYPE_MAP
end
version_string(full_version_string) click to toggle source
# File lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 872
def version_string(full_version_string)
  full_version_string.match(/^(?:5\.5\.5-)?(\d+\.\d+\.\d+)/)[1]
end