Tài liệu SQL Clearly Explained- P6 doc

... 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 ... 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 Exec...

Ngày tải lên: 21/01/2014, 19:20

... embedded SQL statement EXEC SQL complete _SQL_ statement Execute a prepared dynamic SQL statement EXECUTE [ GLOBAL | LOCAL ] prepared_dynamic _SQL_ statement [ INTO { parameter, … } | { SQL DESCRIPTOR ... dynamic SQL statement 000 None 38 External routine exception 000 None 001 Containing SQL not permitted 002 Modifying SQL not permitted 003 Prohibited SQL statement attempt...

Ngày tải lên: 21/01/2014, 19:20

... end. Chapter 1: Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. SQL Clearly Explained Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. ... Work Chapter 1: Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. SQL Clearly Explained Third Edition Jan L. Harrington Please purchase PDF Split-Merge on www.ve...

Ngày tải lên: 24/12/2013, 13:16

... 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...

Ngày tải lên: 24/12/2013, 13:16

... DBA.customer.customer_numb. Check your product documen- tation to determine whether your DBMS is one of those that re- quire the user ID qualier. How might a SQL query optimizer choose to process this ... syntax, not all DBMSs support all three varieties of the syntax. You will need to consult the documentation SQL- 92 Join Syntax Please purchase PDF Split-Merge on www.verypdf.com to re...

Ngày tải lên: 21/01/2014, 19:20

... 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 ... SQL DBMS support- ing COUNT, SUM, AVG, MIN, and MAX. In addition, many DBMSs provide additional aggregate functions for measures such as standard deviation and variance. Consult the DBMSs d...

Ngày tải lên: 21/01/2014, 19:20

... 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.)...

Ngày tải lên: 21/01/2014, 19:20

... 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 =...

Ngày tải lên: 21/01/2014, 19:20

... character_type) For example, SELECT XMLSERIALIZE (DOCUMENT xmltext AS VARCHAR (256)) FROM sql_ stuff WHERE seq_numb = 16; would extract the document from the row with the sequence number of ... tags) and display it on the screen. Because SQL removes the tags from interactive SELECT output, this function is particularly useful in an embedded SQL program. XMLSERIALIZE Please pu...

Ngày tải lên: 21/01/2014, 19:20

... embedded SQL statement EXEC SQL complete _SQL_ statement Execute a prepared dynamic SQL statement EXECUTE [ GLOBAL | LOCAL ] prepared_dynamic _SQL_ statement [ INTO { parameter, … } | { SQL DESCRIPTOR ... dynamic SQL statement 000 None 38 External routine exception 000 None 001 Containing SQL not permitted 002 Modifying SQL not permitted 003 Prohibited SQL statement attempt...

Ngày tải lên: 21/01/2014, 19:20