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Methods
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Instance Public methods

allowed_index_name_length()

Returns the maximum allowed length for an index name. This limit is enforced by Rails and is less than or equal to index_name_length. The gap between index_name_length is to allow internal Rails operations to use prefixes in temporary operations.

Source: show | on GitHub 

# File activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb, line 20
def allowed_index_name_length
  index_name_length
end

in_clause_length()

Returns the maximum number of elements in an IN (x,y,z) clause. nil means no limit.

Source: show | on GitHub 

# File activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb, line 32
def in_clause_length
  nil
end

index_name_length()

Returns the maximum length of an index name.

Source: show | on GitHub 

# File activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb, line 26
def index_name_length
  max_identifier_length
end

table_alias_length()

Returns the maximum length of a table alias.

Source: show | on GitHub 

# File activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb, line 11
def table_alias_length
  max_identifier_length
end