Table command

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  • Once you have created your tables, you can modify their structure by using the ALTER TABLE command. Add columns, modify the column length, add or drop constraints, and enable or disable constraints by using this command. If you want to remove a table, both the rows and the data structure of a table, invoke the DROP TABLE command. Other commands that affect tables that are covered in this lesson are  RENAME, to change a database object name.  TRUNCATE, to remove all rows from a table.  COMMENT, to add a comment about a database object to the data dictionary.

    pdf28p batoan 12-08-2009 76 17   Download

  • SQL commands can be classified in to three types: Data Definition Language commands (DDL) Data Manipulation Language commands (DML) Data Control Language commands (DCL) DDL commands are used to define a database, including creating, altering, and dropping tables and establishing constraints. DML commands are used to maintain and query a database, including updating, inserting, modifying, and querying data. DCL commands are used to control a database including administering privileges and saving of data....

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  • Executing SELECT Statements and TableDirect Commands A TableDirect command is actually a SELECT statement that returns all the rows and columns for a specified table.

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  • Listing 8.3: SCHEMAONLYCOMMANDBEHAVIOR.CS /* SchemaOnlyCommandBehavior.cs illustrates how to read a table schema */ using System; using System.Data; using System

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  • [ Team LiB ] Recipe 10.8 Adding Tables to a Database Problem You need to add a table to an existing database. Solution Use the CREATE TABLE statement. The sample code executes the DDL statement—using the ExecuteNonQuery( ) method of the Command object—to add a table to an existing SQL Server database.

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  • This reference describes the objects and commands in the Adobe® Photoshop® CS2 JavaScript type library. A companion document, Photoshop CS2 Scripting Guide, describes basic scripting concepts and the Photoshop object model. This document provides reference details of the Photoshop object model, and additional information on JavaScript-specific features. Adobe Photoshop CS2 uses ExtendScript, Adobe’s extended implementation of JavaScript. See Script Support in Adobe Photoshop CS2 for additional information....

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  • Access 2010 is a powerful database application that allows users to produce tables, forms, queries and reports within a database it can also contain calculations, graphs, pictures and files. This ebook is the final part of a series of four ebooks. The first part explained the basics of Access 2010.A macro is a set of commands that can be played back at will to perform a given task. These tasks can be something simple from inserting your name and address into a document to something much more complex such as launching a program, copying data from it, activating another program,...

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  • A macro is a set of commands that can be played back at will to perform a given task. These tasks can be something simple from inserting your name and address into a document to something much more complex such as launching a program, copying data from it, activating another program, pasting the data into it and repeating this several times. Tasks performed by macros are typically repetitive in nature allowing significant savings in time by executing the macro instead of manually repeating the commands....

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  • Phần lớn các thiết lập Dreamweaver được điều khiển thông qua hộp thoại Preferences. Bạn có thể mở Preferences bằng cách chọn Edit ➪ Preferences (Dreamweaver ➪ Preferences) hoặc bằng cách sử dụng phím tắt Ctrl + U (Command + U). Trong thời hạn Preferences, bạn tìm thấy 20 đối tượng khác nhau được liệt kê ở phía bên trái của màn hình. Khi bạn chuyển từ một trong những thể loại khác

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  • Mysql your visual blueprint for creating open source databases- P1:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

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  • Mysql your visual blueprint for creating open source databases- P2:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

    pdf20p maicon246 04-10-2010 48 5   Download

  • Mysql your visual blueprint for creating open source databases- P3:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

    pdf20p maicon246 04-10-2010 41 5   Download

  • Mysql your visual blueprint for creating open source databases- P4:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

    pdf20p maicon246 04-10-2010 57 5   Download

  • Mysql your visual blueprint for creating open source databases- P5:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

    pdf20p maicon246 04-10-2010 56 5   Download

  • Mysql your visual blueprint for creating open source databases- P14:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

    pdf20p maicon246 04-10-2010 42 5   Download

  • Mysql your visual blueprint for creating open source databases- P6:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

    pdf20p maicon246 04-10-2010 59 4   Download

  • Mysql your visual blueprint for creating open source databases- P7:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

    pdf20p maicon246 04-10-2010 48 4   Download

  • Mysql your visual blueprint for creating open source databases- P8:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

    pdf20p maicon246 04-10-2010 57 4   Download

  • Mysql your visual blueprint for creating open source databases- P9:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

    pdf20p maicon246 04-10-2010 48 4   Download

  • Mysql your visual blueprint for creating open source databases- P10:The show tables command displays a list of tables available in the currently selected database. You can use this command when you are unsure of the exact name of a table within the database.

    pdf20p maicon246 04-10-2010 47 4   Download

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