By Jim Melton
complicated SQL:1999 - figuring out Object-Relational and different complicated beneficial properties is the practitioner's guide to the standard's complicated gains. it isn't a re-presentation of the normal, yet fairly an authoritative, in-depth advisor to its useful software. Like its spouse, SQL:1999 - realizing Relational Language parts , which defined the standard's simple positive factors, this e-book will enable you to make your purposes either powerful and standard-compliant.
this convenient reference has a modular structure so that you can discover particular subject matters very easily. it truly is both valuable to these upgrading from past types of SQL and people without earlier adventure. Written by means of the standard's exotic editor, complicated SQL:1999 will whole your wisdom and aid your abilities like no different booklet can. * Focuses solely at the matters that topic to programmers who're connecting functions to databases. * info SQL:1999's item amenities, together with established user-defined kinds, typed tables, user-defined workouts, and regimen invocation. * Examines amenities new to SQL, together with these in terms of online analytical processing (OLAP), administration of exterior information (SQL/MED), and Java help. * Covers the continuing improvement of XML aid. * comprises appendices that hide the SQL:1999 annexes, a SQL:1999 instance utilizing UDTs, prestige codes, and worthwhile info at the standardization strategy.
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Complex SQL:1999 - figuring out Object-Relational and different complicated gains is the practitioner's guide to the standard's complex good points. it's not a re-presentation of the traditional, yet quite an authoritative, in-depth advisor to its functional software. Like its significant other, SQL:1999 - figuring out Relational Language elements , which defined the standard's simple good points, this booklet will make it easier to make your functions either potent and standard-compliant.
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Additional resources for Advanced SQL:1999: Understanding Object-Relational and Other Advanced Features (The Morgan Kaufmann Series in Data Management Systems)
You may not be surprised to learn that SQL:1999 does not provide direct mappings from structured types to host language types, 6 either. However, as we'll see very shortly, there are straightforward ways of accessing structured types' values from client programs, as well as ways for type definers to provide user-defined routines to "map" structured type values to and from host program storage. Each attribute of an SQL structured type can be specified to have a data type that is one of SQL's built-in scalar types, such as INTEGER, DECIMAL(7,2), CHARACTER VARYING(255), or TIMESTAMP(6).
In SQL, a method is a special sort of function, invoked without the CALL statement used for procedure invocation. 5, the syntax for invoking a m e t h o d differs slightly from that for invoking a function, since m e t h o d invocation requires that the argument that identifies the structured type instance that you're accessing be specified as an implicit a r g u m e n t m the name of some site preceding the name of the method. 1 Procedures, Functions, and Methods PSM-968 standardized for the first time the ability for SQL programmers to write functions and procedures (SQL-invoked routines) for use in their SQL code; those functions and procedures could be written in SQL or in any of several supported programming languages.
Cust_addr, zi p_code, base If, by some chance, the customers table had an array of addresses, perhaps to capture the fact that some customers have home addresses, vacation addresses, and business addresses, we could access the second of those using the notation c. cust_addr . z i p_code, base Like I said, intuitive! name, c . cust id = "hostvarl W h e n SQL:1999 added structured types to the data type mix, it would have been obvious to allow references to attributes of columns whose data type is some structured type by allowing a statement like this: SELECT name, c i t y , cust a d d r .
Advanced SQL:1999: Understanding Object-Relational and Other Advanced Features (The Morgan Kaufmann Series in Data Management Systems) by Jim Melton