Có 120+ tài liệu thuộc chủ đề "database SQL"
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Extra spacing is added to each line to justify the text, but if this extra spacing appears in the same location on several rows, you get rivers.. It is easy to set up what typographers call rivers in the program code in a monospace font because you can add spacing as needed, but that same downward river effect aligns code...
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That is, “Personnel AS P1” is equivalent to “Personnel P1” in a FROM clause, and “(salary + commission) AS total_pay” is equivalent to “(salary + commission) total_pay” in a SELECT list. The abbreviations look like the reserved word “into” or the month “Dec” in English.. In fact, a vendor can actually give you proprietary features that are unpredictable! In the...
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SELECT flobs.a,flobs.b,flobs.c,fleq.d FROM Flobs,Foobar,Fleq;. SELECT flobs.a, flobs.b, flobs.c, fleq.d FROM Flobs, Foobar, Fleq;. SELECT flobs.a ,flobs.b ,flobs.c ,fleq.d FROM Flobs ,Fleq. SELECT flobs.a, flobs.b, flobs.c, --related group fleq.d
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Fonts, Punctuation, and Spacing. C ODE IS USUALLY set in a monospace font. After more than a century of manual typewriters and decades of punchcards, we find that it is actually easier to read code in a monospace font than a proportional font. Punctuation marks get the same spacing as a letter in a. monospace font, but would be lost...
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If this list is missing, the correlation name inherits the names from the base tables or views in the table expression. In the case of a simple table correlation name, such a list would probably be redundant because we usually want to use the original column names.. In the case of a table expression correlation name, such a list would...
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The same rules and warnings about affixes apply to all schema objects. You will see “usp_” for user-defined stored procedures, “trig_”. In MS SQL Server, this is a serious problem, because the prefix “sp_” is used for system procedures and has special meaning in the architecture.. the subject of the sentence is understood to be the procedure. The Teradata standards...
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This is a fairly new ISO standard for metadata, and it is not well understood. The real problem is in the many ways that people violate them. A short summary of the NCITS L8 Metadata Standards Committee rules for data elements can be found at the following sites:. It is handy to have a set of rules aimed at the...
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Table 1.1 shows the. Table 1.2 shows the characters allowed in names by the standards and popular SQL products.. but no DBMS allows all three, and in any case the special characters are not Table 1.1 Identifier lengths. Table 1.2 Identifier character sets. Table 1.3 shows the characteristics of delimited identifiers.. Table 1.3 Quoted identifier character sets
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I AM NOT trying to teach you to program in SQL in this book. You might want to read that again. If that is what you wanted, there are better books. This ought to be the second book you buy, not the first.. I assume that you already write SQL at some level and want to get better at it....
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5.2.5 Hierarchical Encoding Schemes 89. 5.3 General Guidelines for Designing Encoding Schemes 92. 5.3.3 Use Explicit Missing Values to Avoid NULLs 92 5.3.4 Translate Codes for the End User 93. 5.3.5 Keep the Codes in the Database 96. 6.1 Pick Standard Constructions over Proprietary Constructions100. 6.1.1 Use Standard OUTER JOIN Syntax 101 6.1.2 Infixed INNER JOIN and CROSS JOIN Syntax....
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And April Wilson, who rubs me the right way.. 1 Names and Data Elements 1. 1.2 Follow the ISO-11179 Standards Naming Conventions 7. 1.2.1 ISO-11179 for SQL 8. 1.2.5 Table and View Names Should Be Industry Standards, Collective, Class, or Plural Nouns 14 1.2.6 Correlation Names Follow the Same Rules as Other. 1.2.7 Relationship Table Names Should Be Common. 1.2.8...
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Morgan Kaufmann Publishers is an imprint of Elsevier.. In all instances in which Morgan Kaufmann Publishers is aware of a claim, the product names appear in initial capital or all capital letters. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means-electronic, mechanical, photocopying, scanning, or otherwise-without prior...
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Mark Horninger Technical Editor. Valentine Boiarkine, Denny Cherry, and Steve Long Lead Authors. Elsevier, Inc., the author(s), and any person or firm involved in the writing, editing, or production (collectively “Makers”) of this book (“the Work”) do not guarantee or warrant the results to be obtained from the Work.. There is no guarantee of any kind, expressed or implied, regarding...
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He is primarily involved in designing databases in SQL Server. Dinesh has been working with SQL Server since 2000 starting from version 7.. Dinesh is a regular columnist for popular Web sites, including sql-server-performance.com, sqlservercentral.com, and sqlserveruniverse.. Besides writing, Dinesh is actively involved in presentations for the SQL Server Sri Lankan User Group (SS SLUG).. Christian Bolton (MCA: Database, MCM:...
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Service Accounts and Permissions. Domain Service Accounts versus Local Service Accounts. Summary of Exam Objectives. Exam Objectives Fast Track. Exam Objectives Frequently Asked Questions. Chapter 5 Managing Data Encryption. Understanding Transparent Data Encryption. Encryption Keys. Database Encryption Keys. Third-Party Encryption Tools. Chapter 6 Managing High Availability. Defining High Availability. SQL High-Availability Options. Recovery Model. SQL Server Collations. Implementing Data Compression....
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Chapter 11 SQL Server XML Support. Working with XML Data. HTTP Endpoints. Http Endpoints Defined. Summary of Exam Objectives. Exam Objectives Fast Track. Exam Objectives Frequently Asked Questions. Self Test. Self Test Quick Answer Key. Chapter 12 Service Broker. Service Broker Defined. Using SQLDiag to Collect Performance Data. Performance Data Collection. Performance Data Collection Explained. Management Data Warehouse. Configuring Data...
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Congratulations on your journey to become certified in SQL Server 2008. This book will help prepare you for your exam and give you a practical view of working with SQL Server 2008.. SQL Server 2008 is a fantastic product when you think about all it does. I’ve worked with SQL Server since the days of 6.5, and it’s come a...
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New Features in SQL Server 2008 • Chapter 1 7. EXEC sys.sp_cdc_enable_db_change_data_capture --Enable CDC on table. EXEC sys.sp_cdc_enable_table_change_data_capture @source_schema = 'dbo',. sys.sp_cdc_add_ job. sys.sp_cdc_generate_wrapper_function. sys.sp_cdc_change_ job. sys.sp_cdc_get_captured_columns. sys.sp_cdc_cleanup_change_table. sys.sp_cdc_get_ddl_history. sys.sp_cdc_disable_db. sys.sp_cdc_help_change_data_capture. sys.sp_cdc_disable_table. sys.sp_cdc_help_ jobs. sys.sp_cdc_drop_ job. sys.sp_cdc_scan. sys.sp_cdc_enable_db. sys.sp_cdc_start_ job. sys.sp_cdc_enable_table. sys.sp_cdc_stop_ job. New Features in SQL Server 2008 • Chapter 1 9. cdc.fn_cdc_get_all_changes_<capture_instance>. sys.fn_cdc_has_column_changed. cdc.fn_cdc_get_net_changes_<capture_instance>. sys.fn_cdc_increment_lsn. sys.fn_cdc_decrement_lsn. sys.fn_cdc_is_bit_set. sys.fn_cdc_get_column_ordinal....
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Transparent data encryption (TDE) is available in SQL Server 2008.TDE allows you to easily encrypt the contents of your database and is designed to provide protection to the entire database. There are quite a few new features when it comes to higher availability in SQL Server 2008. Special hardware is required to take advantage of Hot Add CPU and Hot...
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The spatial data type is a new data type available in SQL Server 2008. Many of the new features carry over to SSIS, like Change Data Capture and the MERGE statement. Reporting Services. There have been a few improvements to SQL Server Reporting Services.. In the past, IIS needed to be installed to host Reporting Services. Reporting Services now has...