db2 temporary table

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 visible to the current session,

The syntax is as follows:1. Description: copy a table (only copy structure, source table name: a new table name: B) (access available)Method 1: Select * into B from a where 1 Method 2: Select top 0 * into B from 2. Description: copy a table (copy data, source table name: A t

This article describes how to copy a DB2 table to a DB2 database through one-way Q replication. We all know that Q replication is a new high-speed technology, I is generally used to move data between databases managed by IBM DB2 Universal Database. It is a highlight of the just-released

First, table variables Table variables were first introduced in SQL Server 2000. The specific definitions of table variables include column definitions, column names, data types, and constraints. Constraints that can be used in table variables include primary KEY constraints, UNIQUE constraints, NULL constraints, and C

1. Only copy the table structure without copying data Select * into B from a where 1 2. Table data migration table B already exists: Insert into B (d, e, f) Select a, B, c from; Table B originally does not exist: Create Table B (select a, B, c from ); 3. Create a

Oracle database The process of creating temporary tables and the contrast with the different points of the SQL Server Temp table is the main content of this article, let's take a look at this part of the content, we hope to be able to help you. 1. Introduction In addition to saving permanent tables, Oracle databases can also create temporary tables

In SQL Server performance tuning, there is an aspect problem: How do you work with temporary datasets in code that takes a long time or is frequently called? Table variables and temporary tables are two choices. Remember that a large number of temporary data set processing requirements have been seen in SQL Server appl

MySQL table structure replication, table data migration, temporary table and view creation 1. copy only the table structure, do not copy data www.2cto.com select * into B from a where 1

Talking about MySQL temporary table and derived table, talking about mysql Derivation About derived tables When the primary query contains a derived table, or when the select statement contains the union clause, or when the select statement contains the order by clause of a field (group by clause of another field, in o

When we use tables in a database, we often encounter two ways to use a table, which is to use temporary tables and table variables. How can we use them flexibly in a stored procedure when we are actually using them, although they are basically the same functionality, how do you sometimes use a temporary

Because temporary tables are used directly to create intermediate tables, the speed is not satisfactory. Therefore, the idea of creating a temporary table as a memory table exists. However, the difference between a memory table and a tem