create_index.cpp
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:3k
- /* Copyright (C) 2003 MySQL AB
- 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
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #include <ndb_global.h>
- #include <NdbOut.hpp>
- #include <NdbApi.hpp>
- #include <NDBT.hpp>
- #include <getarg.h>
- int
- main(int argc, const char** argv){
- ndb_init();
- const char* _dbname = "TEST_DB";
- int _help = 0;
- int _ordered = 0, _pk = 1;
- struct getargs args[] = {
- { "database", 'd', arg_string, &_dbname, "dbname",
- "Name of database table is in"},
- { "ordered", 'o', arg_flag, &_ordered, "Create ordered index", "" },
- { "pk", 'p', arg_flag, &_pk, "Create index on primary key", "" },
- { "usage", '?', arg_flag, &_help, "Print help", "" }
- };
- int num_args = sizeof(args) / sizeof(args[0]);
- int optind = 0;
- char desc[] =
- "<tabname>+n"
- "This program will create one unique hash index named ind_<tabname> "
- " for each table. The index will contain all columns in the table";
-
- if(getarg(args, num_args, argc, argv, &optind) || _help ||
- argv[optind] == NULL){
- arg_printusage(args, num_args, argv[0], desc);
- return NDBT_ProgramExit(NDBT_WRONGARGS);
- }
-
- Ndb MyNdb(_dbname);
- if(MyNdb.init() != 0){
- ERR(MyNdb.getNdbError());
- return NDBT_ProgramExit(NDBT_FAILED);
- }
-
- while(MyNdb.waitUntilReady() != 0)
- ndbout << "Waiting for ndb to become ready..." << endl;
-
- NdbDictionary::Dictionary * dict = MyNdb.getDictionary();
-
- for(int i = optind; i<argc; i++){
- const NdbDictionary::Table * tab = dict->getTable(argv[i]);
- if(tab == 0){
- g_err << "Unknown table: " << argv[i] << endl;
- continue;
- }
-
- if(tab->getNoOfColumns() > 16){
- g_err << "Table " << argv[i] << " has more than 16 columns" << endl;
- }
-
- NdbDictionary::Index ind;
- if(_ordered){
- ind.setType(NdbDictionary::Index::OrderedIndex);
- ind.setLogging(false);
- } else {
- ind.setType(NdbDictionary::Index::UniqueHashIndex);
- }
- char buf[512];
- sprintf(buf, "IND_%s_%s_%c",
- argv[i], (_pk ? "PK" : "FULL"), (_ordered ? 'O' : 'U'));
- ind.setName(buf);
- ind.setTable(argv[i]);
- for(int c = 0; c<tab->getNoOfColumns(); c++){
- if(!_pk || tab->getColumn(c)->getPrimaryKey())
- ind.addIndexColumn(tab->getColumn(c)->getName());
- }
- ndbout << "creating index " << buf << " on table " << argv[i] << "...";
- const int res = dict->createIndex(ind);
- if(res != 0)
- ndbout << endl << dict->getNdbError() << endl;
- else
- ndbout << "OK" << endl;
- }
-
- return NDBT_ProgramExit(NDBT_OK);
- }