HEIDENHAIN MANUALplus 620 Technical Manual page 1625

SQL-HANDLE
SQL index
SQL column
SQL statement
SQL
January 2012
The SQL handle identifies the result set of a previous SQL query. Only values
assigned by the SQL server are valid handles.
The value 0 identifies an invalid handle.
Definition
sql-handle := HANDLE q-number
The SQL index identifies the row from the result set. The indices start at 0 and
are listed in increasing order.
If no index is specified, the first row from the result set is automatically
transferred.
Definition
sql-index := INDEX ( index | q-number )
The name of the table and of the column to be bound is to be enclosed in
double quotation marks.
Definition
table-name := name
column-name := name
sql-column := '"' table-name '.' column-name '"'
Enclose the statement to be executed in double quotation marks. A reference
to a Q parameter can be used within
a statement. Enclose the Q parameter in single
quotes after a colon. The interpreter replaces this sequence with the value of
the Q parameter.
Definition
sql-replacement:= ':' ''' q-parameter '''
sql-statement:= literal
Example:
SQL Q5 " SELECT L, R FROM TOOL WHERE N = :'Q2' "
The NC block SQL defines an SQL statement to be executed. The SQL
HANDLE, which will enable you to access the data at a later date, is stored in
the specified parameter. It is valid until the transaction has been committed or
canceled for all rows of the result set.
Definition
sql-execute := SQL q-parameter sql-statement
Example:
SQL Q5 " SELECT L, R FROM TOOL WHERE N = :'Q2' "
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