PRINT - simplified version

This procedure generates formatted print of a matrix.

The PRINT stored procedure has the following syntax:
PRINT(matrixIn)
Parameters
matrixIn
The name of the input matrix.
Type: NVARCHAR(ANY)
Returns
NVARCHAR(16000) The matrix as a string.
CALL nzm..CREATE_IDENTITY_MATRIX('A',4);
CALL nzm..PRINT('A');
CALL nzm..DELETE_MATRIX('A');

 CREATE_IDENTITY_MATRIX
------------------------
 t
(1 row)

                           PRINT
-------------------------------------------------------------
 -- matrix: A --
 1, 0, 0, 0
 0, 1, 0, 0
 0, 0, 1, 0
 0, 0, 0, 1
(1 row)

 DELETE_MATRIX
---------------
 t
(1 row)