Tài liệu SQL Clearly Explained- P5 ppt

... one DBMS. Catalog creation is implementation dependent and therefore not part of the SQL standard.Prior to SQL- 92, clusters often represented database les, and the clustering of objects into ... long. ey are not case sen-sitive. (In fact, many SQL command processors convert names to all upper- or lowercase characters before submitting a SQL statement to a DBMS for processing.)Note: ... neither is recognized by SQL queries so their use should be avoided.To a database designer, a schema represents the overall, logi-cal design of a complete database. As far as SQL is concerned, however,...

Tài liệu SQL Clearly Explained- P1 ppt

... end.Chapter 1:Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. SQL Clearly ExplainedPlease purchase PDF Split-Merge on www.verypdf.com to remove this watermark. ... WorkChapter 1:Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. SQL Clearly ExplainedThird EditionJan L. HarringtonPlease purchase PDF Split-Merge on www.verypdf.com ... not provide direct support for true relational domains. Nonetheless you will see that there are SQL constructs that simulate domains. DomainsPrimary KeysPlease purchase PDF Split-Merge on...

Tài liệu SQL Clearly Explained- P2 ppt

... procedures and triggers. (See Chapter 14.)e SQL standard has been updated three times since the appearance of SQL: 1999 in versions named SQL: 2003, SQL: 2006, and SQL: 2008. As well as eshing out the ... text les. SQL s XML features are introduced in Chapter 17. is book is based on the more recent versions of the SQL standard (SQL: 2003 through SQL: 2008). However, keep in mind that SQL: 2008 ... Chapter 3: Introduction to SQL (Structured English Query Language) and pronounced “sequel.” e language’s name was later shortened to SQL. Although IBM authored SQL, the rst SQL implementation was...

Tài liệu SQL Clearly Explained- P3 ppt

... form.tax_year || form.customer_numbe || operator represents concatenation in most SQL imple-mentations. It instructs the SQL command processor to view the two columns as if they were one and to base ... the SQL- 92 syntaxSELECT acct_first_name, acct_last_name, form.tax_year, form.form_ID FROM project JOIN form;Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. SQL ... syntax according to the SQL standard. A DBMS may support the syntax without its query optimizer using the order of tables in the FROM clause to determine join order. SQL- 92 Syntax and Multiple-Table...

Tài liệu SQL Clearly Explained- P4 pptx

... will be reading about in this chapter are often referred to as SQL s OLAP (Online Analytical Processing) functions.e basic SQL set, or aggregate, functions (summarized in Table 7-1) compute ... unless you resort to the group making trick shown earlier. e more recent versions of the SQL stan-dard (from SQL: 2003 onward), however, include a new way to compute aggregate functions yet display ... www.verypdf.com to remove this watermark. 162 Chapter 7: Working with Groups of RowsTable 7-1: SQL set functionsFunction MeaningFunctions implemented by most DBMSsCOUNTReturns the number...

Tài liệu SQL Clearly Explained- P8 pptx

... sql_ stuff WHERE seq_numb = 16;would extract the document from the row with the sequence number of 16, convert it to plain text (removing the tags) and display it on the screen. Because SQL ... testNote: You could store XML in a text column, tags and all. How-ever, when you use an XML column, SQL will check the XML to see that it is well-formed.e XMLSERIALIZE function is essentially the ... the tags from interactive SELECT output, this function is particularly useful in an embedded SQL program.XMLSERIALIZEPlease purchase PDF Split-Merge on www.verypdf.com to remove this watermark....

Tài liệu SQL Clearly Explained- P9 pptx

... embedded SQL statementEXEC SQL complete _SQL_ statementExecute a prepared dynamic SQL statementEXECUTE [ GLOBAL | LOCAL ] prepared_dynamic _SQL_ statement [ INTO { parameter, … } | { SQL DESCRIPTOR ... dynamic SQL statement000 None38 External routine exception 000 None001 Containing SQL not permitted002 Modifying SQL not permitted003 Prohibited SQL statement attempted004 Reading SQL data ... host_language_variable_or_literal, … } | { SQL DESCRIPTOR descriptor_name } ]Prepare a dynamic SQL statement for executionPREPARE [ GLOBAL | LOCAL ] prepared_dynamic _SQL_ statement_name FROM SQL_ statement_text_literal_or_variableRemove...

Tài liệu SQL Clearly Explained- P6 doc

... are SQL program modules that are invoked by an application program using the SQL CALL command. Both triggers and stored procedures are stored as part of a database.Writing and Executing SQL ... Writing and Executing SQL Routines and Modulesx Note: Support for SQL programming varies considerably from one DBMS to another. is chapter presents what is documented in the SQL standard, but ... statement:CREATE PROCEDURE procedure_name (input_parameters)LANGUAGE SQL MODIFIES SQL DATA BEGIN procedure_body END SQL Programming ElementsPlease purchase PDF Split-Merge on www.verypdf.com...

Tài liệu SQL Clearly Explained- P7 pdf

... theSQL + “, “; theSQL = theSQL + “zip_postcode = “ + contents_of_zip_filed;}EXEC SQL EXECUTE IMMEDIATE :theSQL;If (strcmp (SQLCODE, “00000”) EXEC SQL COMMIT;else{ EXEC SQL ROLLBACK; // ... (needsComma) theSQL = theSQL + “, “; the SQL = theSQL + “state_province = “ + contents_of_state_field; needsComma = true;}if (valid_contents_in_zip_field){ if (needsComma) theSQL = theSQL + “, ... (valid_contents_in_street_field){ theSQL = theSQL + “street = “ + contents_of_street_field; needsComma = true;}if (valid_contents_in_city_field){ if (needsComma) theSQL = theSQL + “, “; theSQL = theSQL + “city...

Tài liệu SQL Clearly Explained- P10 doc

... embedded SQL statementEXEC SQL complete _SQL_ statementExecute a prepared dynamic SQL statementEXECUTE [ GLOBAL | LOCAL ] prepared_dynamic _SQL_ statement [ INTO { parameter, … } | { SQL DESCRIPTOR ... dynamic SQL statement000 None38 External routine exception 000 None001 Containing SQL not permitted002 Modifying SQL not permitted003 Prohibited SQL statement attempted004 Reading SQL data ... name 000 None2F SQL routine exception 000 None002 Modifying SQL data not permitted003 Prohibited SQL statement attempted 428 Appendix B: SQLSTATE Return Codes004 Reading SQL data not permitted005...

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