multiple sql statements

SUN provides a set of database access specifications (that is, a set of interfaces) and protocol standards for database connection, then various database manufacturers follow SUN's specifications to provide a set of APIs to access their own database

The SQLite library contains a command line named sqlite3, which allows you to manually enter and execute SQL commands for the SQLite database. This document provides an example of using sqlite3 The SQLite library contains a command line named sqlite3

What is a transaction (Transaction)A Program execution unit (unit) that accesses and potentially updates various data items in a databasewhich consists of multiple SQL statements that must be executed as a wholeThese SQL statements are submitted to

The principle and application of Java transaction in-depth Java transactionFirst, what is a Java transactionThe general idea is that transactions are only relevant to the database.Transactions must be subject to the ACID principles established by

The concept of character set is clear to everyone. Many people do not understand the proofreading rules. This concept is not used in general database development. mysql seems very advanced in convenience. The concept of character set is clear to

OracleExecute SQL bat Connection database statement in batches First, create a text file and write SQL Code Sqlplus Scott/tiger @ zlkj_kk @ runsql. SQL Sqlplus Scott/tiger @ zlkj_kk @ runsql. SQL Save the file and change the

The restructured data center charging system is implemented by three layers. When I started simple addition, deletion, and modification, I was able to say that I had to learn something new when I did recharge and withdraw the card, if you want to

As part of web development, database access is also essential. Let's take a look at JDBC first. JDBC JDBC (Java database connectivity) is an application programming interface (API). It describes a set of standard Java class libraries that access

Sqlite3: a command line interface for SQLite Databases Address: http://www.sqlite.org/sqlite.html The SQLite library contains a command line named sqlite3, which allows you to manually enter and execute SQL commands for the SQLite database. This

My colleague asked me a question about the difference between using for all and for loop. This problem has never been further investigated before. The only clear difference is that for all is a batch operation, which is much more efficient than for

Since there are not many contacts with Oracle and there are few training companies, such a company is just a scam. It is estimated that there is no great development!Let's get down to the truth.I have debugged a program that executes Oracle

The guidelines to be followed when designing indexes include: Database Rules, query rules, and column rules. Detailed descriptions of each criterion are listed below. Among them, 1-3 belongs to the database criterion; 2-8 belongs to the query

Pl/SQL is an extension of oracle's standard database language. oracle has integrated pl/SQL into oracle servers and other tools, in recent years, more developers and DBAs have started to use pl/SQL. This article describes basic pl/SQL syntax,

C/C ++ APIs for SQLite Third Edition 1.0 Overview SQLite 3.0 is a new version of SQLite. It inherits from SQLite 2.8.13, but has an incompatible file format and API. SQLite 3.0 is created based on the following requirements: UTF-16 is supported.

The following describes some common SQL * Plus commands: 1. Execute an SQL script fileSQL> Start file_nameSQL> @ file_nameWe can save multiple SQL statements in a text file, so that when we want to execute all the SQL statements in this file, we can

SQL> show user; displays the current user (dedicated in the SQL * Plus tool, the better way is to use SQL> Select User from dual; statement to view the current user, the dual table is an oracle table that every SQL * Plus user can use. Here, it is

When a transaction involves multiple SQL statements or operations on multiple tables, you must consider using a stored procedure. When a transaction is completed with complex business logic (for example, operations on multiple data, changes to the

1. Introduction to PDM The Physical Data Model (Physical Data Model) PDM provides the basic elements required for the initial design of the system and the relationship between related elements; the physical design stage of the database must be

After the sqlite3 database is connected, you can execute the SQL command. The prepare and step functions described below are used to operate and execute SQL commands. Typical function operation process (pseudo code ): /* create a statement from an

PL/SQL Block Declare begin -- SQL statement -- SQL statement directly written (DML/TCL) -- Indirectly write execute immediate -- Select statement the into clause must be included. Select empno into eno from emp Where e-mapreduce = 7369; only one