dcl sql

language classification is roughly as follows:1) Data Definition Language (DDL): Create, Drop, Grant, Revoke ,...2) Data Control Language (DML): Update, Insert, Delete ,...3) Data Control Language (DCL): Commit, Rollback, Savapoint ,...4) Others: Alter System, Connect, Allocate ,...For more information about the specific syntax structure, see SQL language. Ii. Process and Function The procedures and functi

Oracle SQL * plus is a client tool that interacts with oracle. In SQL * plus, you can run the SQL * plus command and the SQL * plus statement.The DML, DDL, and DCL statements we usually call are SQL * plus statements. After they a

Tags: here update type DDL DCL Multi-column management Tcl otherObjectiveThe front of this series is all about querying select. But the SQL is very extensive, according to the different processing of data can be divided into: DML: Full data manipulation Language, as can be seen from the name, DML is the maintenance of the data management language, mainly to deal with the information itself; DDL

1. query all tables in SQL:Select TABLE_NAME FROM database name. INFORMATION_SCHEMA.TABLES Where TABLE_TYPE = 'base table' after execution, you can see the names of all tables created by yourself in the database.2. query all tables and columns in SQL:Select dbo. sysobjects. name as Table_name, dbo. syscolumns. name AS Column_name FROM dbo. syscolumns inner join dbo. sysobjects ON dbo. syscolumns. id = dbo. sysobjects. id Where (dbo. sysobjects. xtype = 'U') AND (NOT (dbo. sysobjects. name LIKE '

Topic: Consumers from Madrid with fewer than 3 orders Build table: Copy Code code as follows: SET NOCOUNT ON--When SET NOCOUNT is on, the count is not returned (representing the number of rows affected by Transact-SQL statements). Returns the count when SET NOCOUNT is off Use SY Go If OBJECT_ID (' dbo. Orders ') is not null DROP TABLE dbo. Orders Go If OBJECT_ID (' dbo. Customers ') is not null DROP TABLE dbo. Customers Go CREATE

Classic SQL statements The following statements are MSSQL statements and cannot be used in access.SQL classification:DDL-Data Definition Language (create, alter, drop, declare)DML-data manipulation language (select, delete, update, insert)DCL-Data Control Language (Grant, revoke, commit, rollback)First, we will briefly introduce the basic statements:1. Description: Create a databaseCreate Database database-

Comparison of functions between Visual Basic for Applications and SQL Server Transact-SQL (ADP)Note that the information in this topic applies only to the Microsoft Access Project (. ADP ). The following table compares common functions in Microsoft Visual Basic for Applications (VBA) and Microsoft SQL Server Transact-SQL