Skip to content

M
mariadb
Commit fd19fb9c authored by osku's avatar osku
Browse files
Options

Use bound literals in row_drop_table_for_mysql.

parent f1fefc55
Show whitespace changes
Inline Side-by-side
Showing with 67 additions and 95 deletions
row/row0mysql.c
View file @ fd19fb9c
......@@ -2996,83 +2996,13 @@ row_drop_table_for_mysql(
dict_foreign_t* foreign;
dict_table_t* table;
ulint space_id;
que_thr_t* thr;
que_t* graph;
ulint err;
const char* table_name;
ulint namelen;
char* dir_path_of_temp_table = NULL;
ibool success;
ibool locked_dictionary = FALSE;
char* quoted_name;
char* sql;
/* We use the private SQL parser of Innobase to generate the
query graphs needed in deleting the dictionary data from system
tables in Innobase. Deleting a row from SYS_INDEXES table also
frees the file segments of the B-tree associated with the index. */
static const char str1[] =
"PROCEDURE DROP_TABLE_PROC () IS\n"
"table_name CHAR;\n"
"sys_foreign_id CHAR;\n"
"table_id CHAR;\n"
"index_id CHAR;\n"
"foreign_id CHAR;\n"
"found INT;\n"
"BEGIN\n"
"table_name := ";
static const char str2[] =
";\n"
"SELECT ID INTO table_id\n"
"FROM SYS_TABLES\n"
"WHERE NAME = table_name;\n"
"IF (SQL % NOTFOUND) THEN\n"
" COMMIT WORK;\n"
" RETURN;\n"
"END IF;\n"
"found := 1;\n"
"SELECT ID INTO sys_foreign_id\n"
"FROM SYS_TABLES\n"
"WHERE NAME = 'SYS_FOREIGN';\n"
"IF (SQL % NOTFOUND) THEN\n"
" found := 0;\n"
"END IF;\n"
"IF (table_name = 'SYS_FOREIGN') THEN\n"
" found := 0;\n"
"END IF;\n"
"IF (table_name = 'SYS_FOREIGN_COLS') THEN\n"
" found := 0;\n"
"END IF;\n"
"WHILE found = 1 LOOP\n"
" SELECT ID INTO foreign_id\n"
" FROM SYS_FOREIGN\n"
" WHERE FOR_NAME = table_name\n"
" AND TO_BINARY(FOR_NAME) = TO_BINARY(table_name);\n"
" IF (SQL % NOTFOUND) THEN\n"
" found := 0;\n"
" ELSE"
" DELETE FROM SYS_FOREIGN_COLS WHERE ID = foreign_id;\n"
" DELETE FROM SYS_FOREIGN WHERE ID = foreign_id;\n"
" END IF;\n"
"END LOOP;\n"
"found := 1;\n"
"WHILE found = 1 LOOP\n"
" SELECT ID INTO index_id\n"
" FROM SYS_INDEXES\n"
" WHERE TABLE_ID = table_id;\n"
" IF (SQL % NOTFOUND) THEN\n"
" found := 0;\n"
" ELSE"
" DELETE FROM SYS_FIELDS WHERE INDEX_ID = index_id;\n"
" DELETE FROM SYS_INDEXES WHERE ID = index_id\n"
" AND TABLE_ID = table_id;\n"
" END IF;\n"
"END LOOP;\n"
"DELETE FROM SYS_COLUMNS WHERE TABLE_ID = table_id;\n"
"DELETE FROM SYS_TABLES WHERE ID = table_id;\n"
"COMMIT WORK;\n"
"END;\n";
pars_info_t* info = NULL;
ut_a(name != NULL);
......@@ -3127,14 +3057,6 @@ row_drop_table_for_mysql(
srv_print_innodb_table_monitor = FALSE;
}
quoted_name = mem_strdupq(name, '\'');
namelen = strlen(quoted_name);
sql = mem_alloc((sizeof str1) + (sizeof str2) - 2 + 1 + namelen);
memcpy(sql, str1, (sizeof str1) - 1);
memcpy(sql + (sizeof str1) - 1, quoted_name, namelen);
memcpy(sql + (sizeof str1) - 1 + namelen, str2, sizeof str2);
mem_free(quoted_name);
/* Serialize data dictionary operations with dictionary mutex:
no deadlocks can occur then in these operations */
......@@ -3152,16 +3074,6 @@ row_drop_table_for_mysql(
ut_ad(rw_lock_own(&dict_operation_lock, RW_LOCK_EX));
#endif /* UNIV_SYNC_DEBUG */
graph = pars_sql(NULL, sql);
ut_a(graph);
mem_free(sql);
graph->trx = trx;
trx->graph = NULL;
graph->fork_type = QUE_FORK_MYSQL_INTERFACE;
table = dict_table_get_low(name);
if (!table) {
......@@ -3285,18 +3197,80 @@ fputs(" InnoDB: You are trying to drop table ", stderr);
trx->dict_operation = TRUE;
trx->table_id = table->id;
ut_a(thr = que_fork_start_command(graph));
/* We use the private SQL parser of Innobase to generate the
query graphs needed in deleting the dictionary data from system
tables in Innobase. Deleting a row from SYS_INDEXES table also
frees the file segments of the B-tree associated with the index. */
que_run_threads(thr);
info = pars_info_create();
err = trx->error_state;
pars_info_add_str_literal(info, "table_name", name);
err = que_eval_sql(info,
"PROCEDURE DROP_TABLE_PROC () IS\n"
"sys_foreign_id CHAR;\n"
"table_id CHAR;\n"
"index_id CHAR;\n"
"foreign_id CHAR;\n"
"found INT;\n"
"BEGIN\n"
"SELECT ID INTO table_id\n"
"FROM SYS_TABLES\n"
"WHERE NAME = :table_name;\n"
"IF (SQL % NOTFOUND) THEN\n"
" COMMIT WORK;\n"
" RETURN;\n"
"END IF;\n"
"found := 1;\n"
"SELECT ID INTO sys_foreign_id\n"
"FROM SYS_TABLES\n"
"WHERE NAME = 'SYS_FOREIGN';\n"
"IF (SQL % NOTFOUND) THEN\n"
" found := 0;\n"
"END IF;\n"
"IF (:table_name = 'SYS_FOREIGN') THEN\n"
" found := 0;\n"
"END IF;\n"
"IF (:table_name = 'SYS_FOREIGN_COLS') THEN\n"
" found := 0;\n"
"END IF;\n"
"WHILE found = 1 LOOP\n"
" SELECT ID INTO foreign_id\n"
" FROM SYS_FOREIGN\n"
" WHERE FOR_NAME = :table_name\n"
" AND TO_BINARY(FOR_NAME) = TO_BINARY(:table_name);\n"
" IF (SQL % NOTFOUND) THEN\n"
" found := 0;\n"
" ELSE"
" DELETE FROM SYS_FOREIGN_COLS WHERE ID = foreign_id;\n"
" DELETE FROM SYS_FOREIGN WHERE ID = foreign_id;\n"
" END IF;\n"
"END LOOP;\n"
"found := 1;\n"
"WHILE found = 1 LOOP\n"
" SELECT ID INTO index_id\n"
" FROM SYS_INDEXES\n"
" WHERE TABLE_ID = table_id;\n"
" IF (SQL % NOTFOUND) THEN\n"
" found := 0;\n"
" ELSE"
" DELETE FROM SYS_FIELDS WHERE INDEX_ID = index_id;\n"
" DELETE FROM SYS_INDEXES WHERE ID = index_id\n"
" AND TABLE_ID = table_id;\n"
" END IF;\n"
"END LOOP;\n"
"DELETE FROM SYS_COLUMNS WHERE TABLE_ID = table_id;\n"
"DELETE FROM SYS_TABLES WHERE ID = table_id;\n"
"COMMIT WORK;\n"
"END;\n"
, trx);
if (err != DB_SUCCESS) {
ut_a(err == DB_OUT_OF_FILE_SPACE);
err = DB_MUST_GET_MORE_FILE_SPACE;
row_mysql_handle_errors(&err, trx, thr, NULL);
row_mysql_handle_errors(&err, trx, NULL, NULL);
ut_error;
} else {
......@@ -3374,8 +3348,6 @@ funct_exit:
mem_free(dir_path_of_temp_table);
}
que_graph_free(graph);
trx_commit_for_mysql(trx);
trx->op_info = "";
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7