v$logmnr_contents归档日志分析的DMLDDL结果信息 v$logmnr_dictionary日志分析的字典文件信息 v$logmnr_logs日志分析的日志列表信息 v$tablespace表空间信息 v$tempfile临时文件信息 v$filestat数据文件的I/O统计信息 v$undostatUndo数据信息 v$rollname在线回滚段信息 v$session会话信息 v$transaction事务信息 v$rollstat回滚段...
sql server2019字典在哪 sql数据字典是什么 1 基本概念 数据字典 ( data dictionary )是对于数据模型中的数据对象或者项目的描述的集合,这样做有利于程序员和其他需要参考的人。分析一个用户交换的对象系统的第一步就是去辨别每一个对象,以及它与其他对象之间的关系。这个过程称为数据建模,结果产生一个对象关系图。
SQL Data Dictionary Document your database with ease. It is now easy to generate a PDF or HTML listing of all tables and views in your SQL Server database. View example Wide World Importers (SQL Server 2016) PDF output View example Wide World Importers (SQL Server 2016) HTML tree output...
without the data dictionary, though SQL Server would know and understand the SQL language, it wouldn’t know about your database tables and columns; therefore, it wouldn’t be able to query them.
数据字典表(Data dictionary table)用以存储表、索引、约束以及其它数据库结构的信息。这些对象通常以"$"结尾(例如:TAB$、OBJ$、TS$等),在创建数据库时通过运行$ORACLE_HOME/rdbms/admin/sql.bsq脚本来创建。sql.bsq是一个非常重要的文件,其中包含了数据字典表的定义及注释说明,应仔细阅读研究。
Here are some scripts I wrote for reverse engineering SQL server schemas. They may be of some use. Also, as a general interest they give some examples of how to get various bits of information out of the data dictionary. I've added an MIT license below to make permission-to-use explicit...
SQL Server 有两种字典: Global Dictionary: 某个 Column 的全部字典 Local Dictionary: 某个 RowGroup 的字典 这里的构建采取了这样的流程: 采样,决定是否要构建 global index 构建Index 比较值得一提的是,Index Build 阶段内存开销会比较大,这里需要:
Get size of all tables in database How to find largest objects in a SQL Server database? , but I enhanced this to be universal. It uses sys.objects dictionary: SELECT s.NAME as SCHEMA_NAME, t.NAME AS OBJ_NAME, t.type_desc as OBJ_TYPE, i.name as indexName, sum(p.rows) as Row...
DataTable dt=DbHelperSQL.GetDataTable(connString, sql);returndt.Rows.Cast<DataRow>().Select(row => row["name"].ToString()).ToList(); }publicstaticDictionary<string,string> GetTables(stringconnString,stringdatabase) {stringsql =string.Format(@"select ...
[转]SQL Server和Oracle的常用函数对比 ---数学函数 1.绝对值 S:select abs(-1) value O:select abs(-1) value from dual 2.取整(大) S:select ceiling(-1.001) value O:select ceil(-1.001) value from dual 3.取整(小) S:select floor(-1.001) value O:select ...