diff options
Diffstat (limited to 'sql/handler.cc')
| -rw-r--r-- | sql/handler.cc | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sql/handler.cc b/sql/handler.cc index 67ec5f3e759..71d184ad84b 100644 --- a/sql/handler.cc +++ b/sql/handler.cc @@ -1957,8 +1957,53 @@ bool handler::get_error_message(int error, String* buf) } +/** + Check for incompatible collation changes. + + @retval + HA_ADMIN_NEEDS_UPGRADE Table may have data requiring upgrade. + @retval + 0 No upgrade required. +*/ + +int handler::check_collation_compatibility() +{ + ulong mysql_version= table->s->mysql_version; + + if (mysql_version < 50048) + { + KEY *key= table->key_info; + KEY *key_end= key + table->s->keys; + for (; key < key_end; key++) + { + KEY_PART_INFO *key_part= key->key_part; + KEY_PART_INFO *key_part_end= key_part + key->key_parts; + for (; key_part < key_part_end; key_part++) + { + if (!key_part->fieldnr) + continue; + Field *field= table->field[key_part->fieldnr - 1]; + uint cs_number= field->charset()->number; + if (mysql_version < 50048 && + (cs_number == 11 || /* ascii_general_ci - bug #29499, bug #27562 */ + cs_number == 41 || /* latin7_general_ci - bug #29461 */ + cs_number == 42 || /* latin7_general_cs - bug #29461 */ + cs_number == 20 || /* latin7_estonian_cs - bug #29461 */ + cs_number == 21 || /* latin2_hungarian_ci - bug #29461 */ + cs_number == 22 || /* koi8u_general_ci - bug #29461 */ + cs_number == 23 || /* cp1251_ukrainian_ci - bug #29461 */ + cs_number == 26)) /* cp1250_general_ci - bug #29461 */ + return HA_ADMIN_NEEDS_UPGRADE; + } + } + } + return 0; +} + + int handler::ha_check_for_upgrade(HA_CHECK_OPT *check_opt) { + int error; KEY *keyinfo, *keyend; KEY_PART_INFO *keypart, *keypartend; @@ -1987,6 +2032,10 @@ int handler::ha_check_for_upgrade(HA_CHECK_OPT *check_opt) } if (table->s->frm_version != FRM_VER_TRUE_VARCHAR) return HA_ADMIN_NEEDS_ALTER; + + if ((error= check_collation_compatibility())) + return error; + return check_for_upgrade(check_opt); } |