{"id":869,"date":"2011-03-28T04:57:03","date_gmt":"2011-03-28T09:57:03","guid":{"rendered":"http:\/\/www.dpriver.com\/blog\/?page_id=869"},"modified":"2015-07-23T23:54:03","modified_gmt":"2015-07-24T04:54:03","slug":"decoding-sql-grammar-select-statement","status":"publish","type":"page","link":"https:\/\/www.dpriver.com\/blog\/list-of-demos-illustrate-how-to-use-general-sql-parser\/decoding-sql-grammar-select-statement\/","title":{"rendered":"Decoding SQL grammar &#8212; select statement"},"content":{"rendered":"<p>This demo helps you fully take advantage of the general SQL parser to decode SQL grammar of select SQL statement.<\/p>\n<p>Take this SQL for example:<\/p>\n<pre>\r\nSELECT e.last_name      AS name,\r\n       e.commission_pct comm,\r\n       e.salary * 12    \"Annual Salary\"\r\nFROM   scott.employees AS e\r\nWHERE  e.salary > 1000\r\nORDER  BY\r\n  e.first_name,\r\n  e.last_name;\r\n<\/pre>\n<p>SQL elements in select statement decoded by this demo:<\/p>\n<pre>\r\nSelect statement:\r\n\tSelect set type: none\r\n\r\nselect clause:\r\n\tColumns\r\n\t\tFullname:e.last_name\r\n\t\tPrefix:e\tColumn:last_name\talias:name\r\n\t\tFullname:e.commission_pct\r\n\t\tPrefix:e\tColumn:commission_pct\talias:comm\r\n\t\tFullname:e.salary * 12\r\n\t\tPrefix:\tColumn:e.salary * 12\talias:\"Annual Salary\"\r\n\r\nfrom clause:\r\n\tscott.employees as e\r\n\tschema: scott\r\n\tobject:  employees\r\n\ttablealias: e\r\n\t\r\nwhere clause:\r\n\te.salary > 1000\r\n\r\norder by clause:\r\n\te.first_name,\r\n\te.last_name\r\n<\/pre>\n<p>If Select SQL Statement with UNION, INTERSECT, and EXCEPT set operators, please check this <a href=\"http:\/\/www.dpriver.com\/blog\/list-of-demos-illustrate-how-to-use-general-sql-parser\/decoding-sql-grammar-select-sql-statement-with-union-intersect-and-except-set-operators\/\">document<\/a><\/p>\n<p>Download this demo: <a href=\"http:\/\/www.dpriver.com\/gsp\/demos\/csharp\/analyzescript\/analyzescript.cs\">C# version<\/a>, <a href=\"http:\/\/www.dpriver.com\/gsp\/demos\/java\/analyzescript\/analyzeScript.java\">Java version<\/a>, <a href=\"http:\/\/www.dpriver.com\/gsp\/demos\/c\/analyzescript\/analyzescript.zip\">ANSI C demo<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This demo helps you fully take advantage of the general SQL parser to decode SQL grammar of select SQL statement. 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