Hi I am working on xmltable function. This function is used for simple data extraction from XML documents. In this moment I am working on prototype's parser.
The SQL/XML syntax is: XMLTABLE ( xmlquery PASSING xmldocument [COLUMNS columns_list] ) columns_list := column_list ',' colname colname := colname datatype [DEFAULT value] [PATH text] The DEFAULT clause is before PATH clause. I am able to implement the default clause with c_expr - It is enough for almost all usage. What is question? A Oracle db uses little bit different syntax - the DEFAULT and PATH clause are in different order. This is little bit better for Postgres too - now I can use a_expr in DEFAULT clause - what can be little bit better for other than text types. What should be preferrable? ANSI SQL syntax or Oracle syntax? This is not often task - I didn't find any example with DEFAULT clause for Oracle. DB2 and Sybase uses exact ANSI SQL syntax. Regards Pavel
