This is a realization of my own database, the data of basic functions are evil, but also supports complex queries functions, such as sub-queries, multi-table queries, multi-table connections.

Database\.classpath
........\.project
........\bin\db\compiler\CUP$parser$actions.class
........\...\..\........\parser.class
........\...\..\........\sym.class
........\...\..\........\Yylex.class
........\...\..\datamgr\Block.class
........\...\..\.......\Buffer.class
........\...\..\.......\BufferList.class
........\...\..\.......\BufferMgr.class
........\...\..\.......\FieldInfo.class
........\...\..\.......\FileMgr.class
........\...\..\.......\GroupRecordFile.class
........\...\..\.......\IndexMgr.class
........\...\..\.......\MetadataMgr.class
........\...\..\.......\Page.class
........\...\..\.......\PageFormatter.class
........\...\..\.......\RecordFile.class
........\...\..\.......\RecordFormatter.class
........\...\..\.......\RecordPage.class
........\...\..\.......\Schema.class
........\...\..\.......\SortRecordFile.class
........\...\..\.......\TableInfo.class
........\...\..\.......\TableMgr.class
........\...\..\.......\Transaction.class
........\...\..\.bmgr\DBMgr$1.class
........\...\..\.....\DBMgr.class
........\...\..\.....\Session.class
........\...\..\executer\ConditionsParser.class
........\...\..\........\ConditionsParser2.class
........\...\..\........\CreateExecuter.class
........\...\..\........\DeleteExecuter.class
........\...\..\........\Dispatcher.class
........\...\..\........\Executer.class
........\...\..\........\index\BTPageFormatter.class
........\...\..\........\.....\BTreeDir.class
........\...\..\........\.....\BTreeIndex.class
........\...\..\........\.....\BTreeLeaf.class
........\...\..\........\.....\BTreePage.class
........\...\..\........\.....\Constant.class
........\...\..\........\.....\DirEntry.class
........\...\..\........\.....\IndexInfo.class
........\...\..\........\.....\IntConstant.class
........\...\..\........\.....\RID.class
........\...\..\........\.....\StringConstant.class
........\...\..\........\InsertExecuter.class
........\...\..\........\LittleFieldInfo.class
........\...\..\........\query\GroupbyProcessor.class
........\...\..\........\.....\NaturalJoin.class
........\...\..\........\.....\OrderbyProcessor.class
........\...\..\........\.....\Product.class
........\...\..\........\.....\QueryInfo.class
........\...\..\........\.....\SelectExecuter.class
........\...\..\........\.....\SetOperation.class
........\...\..\........\UpdateExecuter.class
........\...\..\........\Utility.class
........\...\..\SqlGrammar\ArithmeticExpression.class
........\...\..\..........\AtomicExpression.class
........\...\..\..........\BooleanExpression.class
........\...\..\..........\Command.class
........\...\..\..........\ConditionList.class
........\...\..\..........\CreateCommand.class
........\...\..\..........\CreateResult.class
........\...\..\..........\DeleteCommand.class
........\...\..\..........\DeleteResult.class
........\...\..\..........\FromWhere.class
........\...\..\..........\GroupBy.class
........\...\..\..........\InsertCommand.class
........\...\..\..........\InsertResult.class
........\...\..\..........\Name.class
........\...\..\..........\NameList.class
........\...\..\..........\NameTypePair.class
........\...\..\..........\NameTypePairList.class
........\...\..\..........\OrderBy.class
........\...\..\..........\Result.class
........\...\..\..........\ResultList.class
........\...\..\..........\SelectCommand.class
........\...\..\..........\SelectHead.class
........\...\..\..........\SelectResult.class
........\...\..\..........\Statement.class
........\...\..\..........\StatementList.class
........\...\..\..........\SubQuery.class
........\...\..\..........\SubQueryList.class
........\...\..\..........\UpdateCommand.class
........\...\..\..........\UpdateResult.class
........\...\..\..........\ValueList.class
........\...\..\test\Test.class
........\...\..\....\test2.class
........\...\..\....\Utility$1.class
........\...\..\....\Utility.class
........\...\java_cup\runtime\lr_parser.class
........\...\........\.......\Scanner.class
........\...\........\.......\Symbol.class
........\...\........\.......\virtual_parse_stack.class
........\CodeSinp

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