HEIDENHAIN TNC 620 User Manual page 336

9
Programming: Q Parameters
9.9 Accessing tables with SQL commands
Programming SQL commands
This function can only be programmed if you have
entered the code number 555343.
Program SQL commands in the Programming mode:
Press the SPEC FCT key
Press the PROGRAM FUNCTIONS soft key
Shift the soft-key row
To select the MOD functions, press SQL
Select an SQL command using a soft key or press
the SQL EXECUTE soft key and program the SQL
command
Overview of the soft keys
Soft key Function
SQL BIND
Bind a Q parameter to a table column
SQL SELECT
Select table rows
SQL EXECUTE
Program a Select command
SQL FETCH
Read table rows from the result set and save them
in Q parameters
SQL ROLLBACK
If INDEX is not programmed: Discard
any changes/insertions and conclude the
transaction
If INDEX is programmed: The indexed row
remains in the result set – all other rows are
deleted from the result set The transaction is
not
SQL COMMIT
Transfer table rows from the result set into the
table and conclude the transaction.
SQL UPDATE
Save data from the Q parameters in an existing
table row in the result set
SQL INSERT
Save data from the Q parameters in a new table
row in the result set
336
concluded
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015