Saxon SQL extension instructions
A new sql:query instruction has been added, to accompany the
existing sql:connect, sql:insert, etc.
Attributes:
| table | The table to be queried (the contents of the FROM clause of the select statement). This is mandatory, the value is an attribute value template. |
| column | The columns to be retrieved (the contents of the SELECT clause of the select statement). May be "*" to retrieve all columns. This is mandatory, the value is an attribute value template. |
| where | The conditions to be applied (the contents of the WHERE clause of the select statement). This is optional, if present the value is an attribute value template. |
| row-tag | The element name to be used to contain each row. Must be a simple name (no colon allowed). Default is "row". |
| column-tag | The element name to be used to contain each column. Must be a simple name (no colon allowed). Default is "col". |
The sql:query instruction writes zero or more row elements to the current
result tree, each containing zero or more column elements, which contain the data values.
Thanks to Claudio Thomas [claudio.thomas@web.de] who supplied the original version of this code.
The SQL extensions are now contained in a separate JAR file, saxon7-sql.jar,
which must be on the class path if these extensions are used.