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cffbb17480
Before MySQL 4.0.18, user-specified constraint names were ignored. Starting with MySQL 4.0.18, the specified constraint name was prepended with the schema name and '/'. Now we are transforming into a format where the constraint name is prepended with the dict_table_t::name and the impossible UTF-8 sequence 0xff. Generated constraint names will be ASCII decimal numbers. On upgrade, old FOREIGN KEY constraint names will be displayed without any schema name prefix. They will be updated to the new format on DDL operations. dict_foreign_t::sql_id(): Return the SQL constraint name without any schemaname/tablename\377 or schemaname/ prefix. row_rename_table_for_mysql(), dict_table_rename_in_cache(): Simplify the logic: Just rename constraints to the new format. dict_table_get_foreign_id(): Replaces dict_table_get_highest_foreign_id(). innobase_get_foreign_key_info(): Let my_error() refer to erroneous anonymous constraints as "(null)". row_delete_constraint(): Try to drop all 3 constraint name variants. Reviewed by: Thirunarayanan Balathandayuthapani Tested by: Matthias Leich
67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
/*****************************************************************************
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Copyright (c) 1996, 2016, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2019, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/dict0crea.ic
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Database object creation
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Created 1/8/1996 Heikki Tuuri
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*******************************************************/
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/** Compose a column number for a virtual column, stored in the "POS" field
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of Sys_columns. The column number includes both its virtual column sequence
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(the "nth" virtual column) and its actual column position in original table
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@param[in] v_pos virtual column sequence
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@param[in] col_pos column position in original table definition
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@return composed column position number */
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UNIV_INLINE
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ulint
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dict_create_v_col_pos(
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ulint v_pos,
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ulint col_pos)
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{
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ut_ad(v_pos <= REC_MAX_N_FIELDS);
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ut_ad(col_pos <= REC_MAX_N_FIELDS);
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return(((v_pos + 1) << 16) + col_pos);
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}
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/** Get the column number for a virtual column (the column position in
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original table), stored in the "POS" field of Sys_columns
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@param[in] pos virtual column position
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@return column position in original table */
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UNIV_INLINE
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ulint
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dict_get_v_col_mysql_pos(
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ulint pos)
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{
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return(pos & 0xFFFF);
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}
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/** Get a virtual column sequence (the "nth" virtual column) for a
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virtual column, stord in the "POS" field of Sys_columns
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@param[in] pos virtual column position
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@return virtual column sequence */
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UNIV_INLINE
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ulint
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dict_get_v_col_pos(
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ulint pos)
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{
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return((pos >> 16) - 1);
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}
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