Changes between Version 2 and Version 3 of rfc21_ogrsqlcast

Timestamp:

Jan 25, 2008, 3:38:08 PM (16 years ago)

Author:

tamas

Comment:

--

rfc21_ogrsqlcast

@@ -56 +56 @@
 
 <data type> ::= character [ ( field_length ) ]
-                | float [ ( field_length ) ]
-                | integer [ ( field_length ) ]
+               | float [ ( field_length ) ]
+               | numeric [ ( field_length [, field_precision ] ) ]
+               | integer [ ( field_length ) ]
+               | timestamp
 
 <field-func> ::= AVG | MAX | MIN | SUM | COUNT
@@ -77 +79 @@
 }}}
 
+This RFC doesn't address implementing conversion to the 'integer list', 'double list' and 'string list' OGR data types, which
+doesn't conform to the SQL92 specification and the necessary conversion routines are missing in the OGR code.
+
 == Implementation ==
 
@@ -82 +87 @@
 
 1. In swq.h I'll have to add to 3 fields to swq_col_def to hold the field_alias the target_type
-and the field_length.
+and the field_length, and add SWQ_DATETIME to the swq_field_type enum. 
 
 2. In swq.c I'll have to change swq_select_preparse to take care of the field alias and the
@@ -109 +114 @@
 Tamas Szekeres will implement the RFC in the development version.
 
+Frank Warmerdam will implement the regression test scripts according to this new functionality.
+
 == References ==