Binding a variable to a table column with SQL BIND

Application

SQL BIND links a Q parameter to a table column. The SQL commands FETCH, UPDATE, and INSERT evaluate this binding (assignment) during data transfer between the result set and the NC program.

Requirements

  • Code number 555343
  • Table exists
  • Appropriate table name
  • The names of tables and table columns must start with a letter and must not contain an arithmetic operator (e.g., +). Due to SQL commands, these characters can cause problems when data are input or read.

Description of function

Program any number of bindings with SQL BIND..., before using the FETCH, UPDATE, or INSERT commands.

An SQL BIND command without a table name or column name cancels the binding. At the latest, the binding is terminated at the end of the NC program or subprogram.

Input

11 SQL BIND Q881 "Tab_example.Position_Nr"

; Bind Q881 to the "Position_No" column of the "Tab_Example" table

To navigate to this function:

Insert NC function All functions FN SQL SQL BIND

The NC function includes the following syntax elements:

Syntax element

Meaning

SQL BIND

Syntax initiator for the BIND SQL command

Q, QL, QR, QS, or Q REF

Variable to be bound

Name or QS

Table name and table column, separated by . or QS parameter with definition

Fixed or variable name

Optional syntax element

Notes

  • Enter the path of the table or a synonym as the table name.
  • Executing SQL statements with SQL EXECUTE

  • During the read and write operations, the control considers only those columns that you have specified by means of the SELECT command. If you specify columns without a binding in the SELECT command, then the control interrupts the read or write operation with an error message.