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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
263 lines
9.3 KiB
C
263 lines
9.3 KiB
C
/*****************************************************************************
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Copyright (c) 1996, 2016, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2017, 2021, 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.h
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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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#ifndef dict0crea_h
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#define dict0crea_h
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#include "dict0dict.h"
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#include "que0types.h"
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#include "row0types.h"
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#include "mtr0mtr.h"
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#include "fil0crypt.h"
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/*********************************************************************//**
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Creates a table create graph.
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@return own: table create node */
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tab_node_t*
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tab_create_graph_create(
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/*====================*/
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dict_table_t* table, /*!< in: table to create, built as
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a memory data structure */
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mem_heap_t* heap); /*!< in: heap where created */
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/** Creates an index create graph.
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@param[in] index index to create, built as a memory data structure
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@param[in] table table name
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@param[in,out] heap heap where created
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@param[in] mode encryption mode (for creating a table)
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@param[in] key_id encryption key identifier (for creating a table)
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@param[in] add_v new virtual columns added in the same clause with
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add index
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@return own: index create node */
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ind_node_t*
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ind_create_graph_create(
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dict_index_t* index,
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const char* table,
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mem_heap_t* heap,
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fil_encryption_t mode,
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uint32_t key_id,
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const dict_add_v_col_t* add_v = NULL);
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/***********************************************************//**
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Creates a table. This is a high-level function used in SQL execution graphs.
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@return query thread to run next or NULL */
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que_thr_t*
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dict_create_table_step(
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/*===================*/
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que_thr_t* thr); /*!< in: query thread */
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/***********************************************************//**
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Creates an index. This is a high-level function used in SQL execution
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graphs.
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@return query thread to run next or NULL */
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que_thr_t*
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dict_create_index_step(
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/*===================*/
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que_thr_t* thr); /*!< in: query thread */
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/***************************************************************//**
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Builds an index definition but doesn't update sys_table.
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@return DB_SUCCESS or error code */
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void
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dict_build_index_def(
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/*=================*/
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const dict_table_t* table, /*!< in: table */
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dict_index_t* index, /*!< in/out: index */
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trx_t* trx); /*!< in/out: InnoDB transaction
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handle */
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/***************************************************************//**
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Creates an index tree for the index if it is not a member of a cluster.
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Don't update SYSTEM TABLES.
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@return DB_SUCCESS or DB_OUT_OF_FILE_SPACE */
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dberr_t
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dict_create_index_tree(
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/*===================*/
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dict_index_t* index, /*!< in/out: index */
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const trx_t* trx); /*!< in: InnoDB transaction handle */
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/** Drop the index tree associated with a row in SYS_INDEXES table.
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@param[in,out] pcur persistent cursor on rec
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@param[in,out] trx dictionary transaction
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@param[in,out] mtr mini-transaction
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@return tablespace ID to drop (if this is the clustered index)
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@retval 0 if no tablespace is to be dropped */
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uint32_t dict_drop_index_tree(btr_pcur_t *pcur, trx_t *trx, mtr_t *mtr)
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MY_ATTRIBUTE((nonnull(1,3), warn_unused_result));
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/***************************************************************//**
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Creates an index tree for the index if it is not a member of a cluster.
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Don't update SYSTEM TABLES.
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@return error code */
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dberr_t
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dict_create_index_tree_in_mem(
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/*==========================*/
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dict_index_t* index, /*!< in/out: index */
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const trx_t* trx); /*!< in: InnoDB transaction handle */
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/** Adds the given set of foreign key objects to the dictionary tables
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in the database. This function does not modify the dictionary cache. The
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caller must ensure that all foreign key objects contain a valid constraint
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name in foreign->id.
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@param[in] local_fk_set set of foreign key objects, to be added to
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the dictionary tables
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@param[in] table table to which the foreign key objects in
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local_fk_set belong to
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@param[in,out] trx transaction
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@return error code or DB_SUCCESS */
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dberr_t
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dict_create_add_foreigns_to_dictionary(
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/*===================================*/
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const dict_foreign_set& local_fk_set,
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const dict_table_t* table,
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trx_t* trx)
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MY_ATTRIBUTE((nonnull, warn_unused_result));
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/** Check if a foreign constraint is on columns server as base columns
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of any stored column. This is to prevent creating SET NULL or CASCADE
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constraint on such columns
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@param[in] local_fk_set set of foreign key objects, to be added to
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the dictionary tables
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@param[in] table table to which the foreign key objects in
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local_fk_set belong to
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@return true if yes, otherwise, false */
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bool
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dict_foreigns_has_s_base_col(
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const dict_foreign_set& local_fk_set,
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const dict_table_t* table);
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/********************************************************************//**
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Add a foreign key definition to the data dictionary tables.
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@return error code or DB_SUCCESS */
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dberr_t
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dict_create_add_foreign_to_dictionary(
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/*==================================*/
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const char* name, /*!< in: table name */
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const dict_foreign_t* foreign,/*!< in: foreign key */
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trx_t* trx) /*!< in/out: dictionary transaction */
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MY_ATTRIBUTE((nonnull, warn_unused_result));
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/* Table create node structure */
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struct tab_node_t{
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que_common_t common; /*!< node type: QUE_NODE_TABLE_CREATE */
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dict_table_t* table; /*!< table to create, built as a
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memory data structure with
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dict_mem_... functions */
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ins_node_t* tab_def; /*!< child node which does the insert of
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the table definition; the row to be
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inserted is built by the parent node */
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ins_node_t* col_def; /*!< child node which does the inserts
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of the column definitions; the row to
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be inserted is built by the parent
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node */
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ins_node_t* v_col_def; /*!< child node which does the inserts
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of the sys_virtual row definitions;
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the row to be inserted is built by
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the parent node */
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/*----------------------*/
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/* Local storage for this graph node */
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ulint state; /*!< node execution state */
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ulint col_no; /*!< next column definition to insert */
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ulint base_col_no; /*!< next base column to insert */
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mem_heap_t* heap; /*!< memory heap used as auxiliary
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storage */
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};
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/* Table create node states */
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#define TABLE_BUILD_TABLE_DEF 1
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#define TABLE_BUILD_COL_DEF 2
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#define TABLE_BUILD_V_COL_DEF 3
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#define TABLE_ADD_TO_CACHE 4
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#define TABLE_COMPLETED 5
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/* Index create node struct */
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struct ind_node_t{
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que_common_t common; /*!< node type: QUE_NODE_INDEX_CREATE */
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dict_index_t* index; /*!< index to create, built as a
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memory data structure with
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dict_mem_... functions */
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const char* table_name; /*!< table name */
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ins_node_t* ind_def; /*!< child node which does the insert of
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the index definition; the row to be
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inserted is built by the parent node */
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ins_node_t* field_def; /*!< child node which does the inserts
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of the field definitions; the row to
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be inserted is built by the parent
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node */
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/*----------------------*/
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/* Local storage for this graph node */
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ulint state; /*!< node execution state */
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uint32_t page_no; /* root page number of the index */
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dtuple_t* ind_row; /* index definition row built */
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ulint field_no; /* next field definition to insert */
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mem_heap_t* heap; /*!< memory heap used as auxiliary
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storage */
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uint key_id; /*!< encryption key_id */
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fil_encryption_t mode; /*!< encryption mode */
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const dict_add_v_col_t*
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add_v; /*!< new virtual columns that being
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added along with an add index call */
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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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/** 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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/** 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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/* Index create node states */
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#define INDEX_BUILD_INDEX_DEF 1
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#define INDEX_BUILD_FIELD_DEF 2
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#define INDEX_CREATE_INDEX_TREE 3
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#define INDEX_ADD_TO_CACHE 4
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#include "dict0crea.inl"
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#endif
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