diff options
Diffstat (limited to 'sql/field.h')
| -rw-r--r-- | sql/field.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/sql/field.h b/sql/field.h index 9cdb35503d5..dac10abd50a 100644 --- a/sql/field.h +++ b/sql/field.h @@ -1,7 +1,7 @@ #ifndef FIELD_INCLUDED #define FIELD_INCLUDED /* Copyright (c) 2000, 2013, Oracle and/or its affiliates. - Copyright (c) 2008, 2014, SkySQL Ab. + Copyright (c) 2008, 2015, MariaDB This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -121,6 +121,20 @@ inline bool is_temporal_type_with_date(enum_field_types type) /** + Tests if a field real type can have "DEFAULT CURRENT_TIMESTAMP" + + @param type Field type, as returned by field->real_type(). + @retval true If field real type can have "DEFAULT CURRENT_TIMESTAMP". + @retval false If field real type can not have "DEFAULT CURRENT_TIMESTAMP". +*/ +inline bool real_type_with_now_as_default(enum_field_types type) +{ + return type == MYSQL_TYPE_TIMESTAMP || type == MYSQL_TYPE_TIMESTAMP2 || + type == MYSQL_TYPE_DATETIME || type == MYSQL_TYPE_DATETIME2; +} + + +/** Recognizer for concrete data type (called real_type for some reason), returning true if it is one of the TIMESTAMP types. */ @@ -2622,6 +2636,14 @@ public: int store(longlong nr, bool unsigned_val); int store_decimal(const my_decimal *); uint size_of() const { return sizeof(*this); } + /** + Key length is provided only to support hash joins. (compared byte for byte) + Ex: SELECT .. FROM t1,t2 WHERE t1.field_geom1=t2.field_geom2. + + The comparison is not very relevant, as identical geometry might be + represented differently, but we need to support it either way. + */ + uint32 key_length() const { return packlength; } /** Non-nullable GEOMETRY types cannot have defaults, |