GetData returns the data element in the row indicated by the row cursor and in the column index.

GetData accepts one optional argument that affects the format of the returned value.

stream = true or false

For some large binary and character elements it may be inconvenient or even impossible to transfer the entire object to Maple at once.  By passing stream=true, GetData will return a DataInterfaceStream module instead of the object.  The DataInterfaceStream module allows the data to be retrieved in pieces.  stream=true is valid only for elements of type CHAR, VARCHAR, LONGVARCHAR, BINARY, VARBINARY, and LONGVARBINARY.

If index is an integer, it is the index of the column in the table. If index is a string, then it is the name of the column.

If the current row is not a data row, then an error is raised.

Using GetData and Next is the preferred method for walking the data of a Result module.

$\mathrm{driver}≔\mathrm{Database}\left[\mathrm{LoadDriver}\right]\left(\right)\:$

$\mathrm{conn}≔\mathrm{driver}:-\mathrm{OpenConnection}\left(\mathrm{url}\,\mathrm{name}\,\mathrm{pass}\right)\:$$\mathrm{res}≔\mathrm{conn}:-\mathrm{ExecuteQuery}\left(''SELECT\; id,name,number,mass\; FROM\; animals''\right)\:$$\mathrm{res}:-\mathrm{Next}\left(\right)$

$\mathrm{true}$

$\mathrm{res}:-\mathrm{GetData}\left(1\right)$

$1$

$\mathrm{res}:-\mathrm{GetData}\left(2\right)$

$''fish''$

$\mathrm{res}:-\mathrm{GetData}\left(3\right)$

$100$

$\mathrm{res}:-\mathrm{GetData}\left(4\right)$

$0.0100000000000000002$

$\mathrm{res}:-\mathrm{GetData}\left(''id''\right)$

$1$

$\mathrm{res}:-\mathrm{GetData}\left(''name''\right)$

$''fish''$

$\mathrm{res}:-\mathrm{GetData}\left(''number''\right)$

$100$

$\mathrm{res}:-\mathrm{GetData}\left(''mass''\right)$

$0.0100000000000000002$

$\mathrm{res}≔\mathrm{conn}:-\mathrm{ExecuteQuery}\left(''SELECT\; *\; FROM\; stream''\right)\:$$\mathrm{res}:-\mathrm{Next}\left(\right)$

$\mathrm{true}$

$\mathrm{res}:-\mathrm{GetData}\left(1\right)$

$''the\; quick\; brown\; fox\; jumped\; over\; the\; lazy\; dog''$

$\mathrm{res}:-\mathrm{GetData}\left(2\right)$

$\mathrm{str}≔\mathrm{res}:-\mathrm{GetData}\left(1\,\mathrm{stream}=\mathrm{true}\right)\:$$\mathrm{str}:-\mathrm{Read}\left(5\right)$

$''the\; q''$

$\mathrm{str}:-\mathrm{Skip}\left(5\right)\;$$\mathrm{str}:-\mathrm{Read}\left(5\right)$

$''brown''$

$\mathrm{str}≔\mathrm{res}:-\mathrm{GetData}\left(2\,\mathrm{stream}=\mathrm{true}\right)\:$$\mathrm{str}:-\mathrm{Read}\left(5\right)$

$\left[1\,2\,3\,4\,5\right]$

$\mathrm{str}:-\mathrm{Skip}\left(5\right)\;$$\mathrm{str}:-\mathrm{Read}\left(5\right)$

$\left[11\,12\,13\,14\,15\right]$