sql get table size

Reprinted from http://blog.csdn.net/cuker919/article/details/8514253Select Segment_name, bytes as sizeFrom User_segmentswhere Segment_type = ' TABLE ' and segment_name in (' view_jlzdh_mp_dl_day_01 ', ' view_jlzdh_mp_dl_day_02 ', ' View_jlzdh_mp_ Dl_

Table size that has two meanings. One is the amount of physical space allocated to a table, regardless of whether space is used or not. You can get the number of bytes in this query:Select Segment_name, bytesFrom User_segmentswhere Segment_type = '

Table size that has two meanings. One is the amount of physical space allocated to a table, regardless of whether space is used or not. You can get the number of bytes in this query:Select Segment_name, bytesFrom User_segmentswhere Segment_type = '

MS SQL Server Query optimization methodThere are many reasons for the slow speed of queries, which are common1, no indexes, or no indexes (this is the most common problem with query slowness, is the flaw in programming)2, I/o throughput is small,

SQL turning is a tool in the Quest Central software produced by Quest Corporation. Quest is an integrated, graphical, Cross-platform database management solution that can manage Oracle, DB2, and SQL Server databases simultaneously. Introduction to

SQL Study Notes (14) ------------ data table, SQL statement for creating a data table Operations on Data TablesBasic Database OperationsWith MySQL, you can choose between the three basic database table formats (version 3.23. When creating a table,

Oracle-based SQL Optimization MethodologyThe ultimate goal of SQL Optimization in Oracle databases is to shorten the execution time of target SQL statements. To achieve the above purpose, we usually have the following three methods to choose from:1.

The table size has two meanings. One is the number of physical spaces allocated to a table, regardless of whether the space is used or not. You can query the number of bytes as follows: Select segment_name, bytesFrom user_segmentsWhere

The ultimate goal of SQL optimization in Oracle database is to shorten the execution time of the target SQL statement. To achieve this, we usually have the following three ways to choose:1, reduce the resource consumption of the target SQL statement;

1.SQL statistics, which may not be allowed after a large number of transaction operationsEXEC sp_spaceused ' table name '2. Exact table space size, but may take some time to countEXEC sp_spaceused ' table name ', True3. Database Size QueryEXEC