Version 3 of tcl sqlite examples

Some examples of tcl and sqlite usage:

NOTE: the name of the database is opendb

• Retrieve the names of the tables stored in a sqlite database:

   set tableNames [opendb eval {SELECT tbl_name FROM sqlite_master}]

• Retrieve the names of the columns (variable columnName):

   opendb eval "SELECT * FROM nuno LIMIT 1" x {set columnName $x(*)} 

jnc You can also use the PRAGMA statement table_info(table_name) to retrieve column information. See http://sqlite.org/pragma.html for a list of all PRAGMA statements.

• Retrieve the row data from a table