count number of rows in each table oracle

Temporary tables: Like normal tables, there is a structure, but the management of the data is not the same, the temporary table stores the transaction or the intermediate result set of the session, the data saved in the temporary table is only

Use BINARY_CHECKSUM to detect changes in the table's rows without USEAdventureWorks2012; GOCREATETABLEmyTable (column1int, column2varchar (256); values (1, test); values (*) frommyTable; GOUPDATEmyTablesetcolumn2 Using BINARY_CHECKSUM to detect

Http://www.cnblogs.com/pan11jing/archive/2009/12/02/1615021.htmlCREATE TABLE t_bi_currentaccountdetailed(OrderDate DATE,Branchflag VARCHAR2 (3),SortId VARCHAR2 (11),OrderNo VARCHAR2 (15),CustomerId VARCHAR2 (11),Amtofdebitside number (14,2) DEFAULT 0

Comparison of concurrency control (LOCK) between DB2 and Oracle Comparison of concurrency control (LOCK) between DB2 and Oracle 1 Introduction The minimal recovery and transaction units in relational databases (DB2, Oracle, Sybase, Informix, and

It takes only 6 minutes to scan a 166G table from an oracle full table, and oracle166g How can I maximize the cpu usage? How to quickly scan a large table. If a large table has a primary key, count (*) takes the primary key. oracle only needs to

Create a Data Group All group functions treat the table as a large information group. However, you sometimes need to divide the table into several smaller groups. You can use the group by clause to complete this task. Create a Data GROUP: group by

Create a data groupAll group functions treat a table as a large group of information. However, it is sometimes necessary to divide this information table into smaller groups. You can accomplish this task by using the GROUP BY clause. Create a Data

1 Introduction The minimal recovery and transaction units in relational databases (DB2, Oracle, Sybase, Informix, and SQL Server) are a transaction (Transactions). Transactions are ACID (atomicity, consistency, isolation, and durability) feature. In

This article from the following aspects to collate the concept and operation of the partition table:1. Table space and the concept of partitioned tables2. The specific role of table partitioning3. Advantages and disadvantages of table partitioning4.

Introduction of Oracle Partition Oracle partitioning is a technique for handling oversized tables, indexes, and so on. Partitioning is a "divide and conquer" technique that provides scalable performance for large amounts of data by dividing large