HEIDENHAIN TNC 620 User Manual page 279

Optional:
WHERE selection criteria: A selection criterion
consists of a column name, condition (see table)
and comparator. Link selection criteria with
logical AND or OR. Program the comparator
directly or with a Q parameter. A Q parameter
is introduced with a colon and placed in single
quotation marks (see example).
Optional:
ORDER BY column name ASC for ascending
sorting, or ORDER BY column name DESC for
descending sorting. If you program neither ASC
nor DESC, ascending sorting is executed by
default. The TNC places the selected rows in the
indicated column.
Optional:
FOR UPDATE (keyword): The selected rows
are locked against write-accesses from other
processes.
Condition
Equal to
Not equal to
Less than
Less than or equal to
Greater than
Greater than or equal to
Linking multiple conditions:
Logical AND
Logical OR
TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 5/2013
Accessing tables with SQL commands
Programming
= ==
!= <>
<
<=
>
>=
AND
OR
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