How to update datetime array from matlab to oracle database with multiple where clause

i have an 3-d datetime array and want to update the same in ORCALE table.

arr1=[19-Apr-2019 06:00:00 , 19-Apr-2019 00:00:00 , 19-Apr-2019 00:00:0, 19-Apr-2019 00:00:00 19-Apr-2019 00:00:00 19-Apr-2019 00:00:00 19-Apr-2019 00:00:00 19-Apr-2019 00:00:00 19-Apr-2019 00:00:00]

arr2=array2table(arr1, 'VariableNames',{'HORIZ','DY1EN','DY1EX','DY2EN','DY2EX','DY3EN','DY3EX','SH1EN','SH1EX'.....

'SH2EN'});

where=['where HORIZ=' datestr(arr1) 'AND EQUIP_ID=' num2str(q)];

col={'HORIZ','DY1EN','DY1EX','DY2EN','DY2EX','DY3EN','DY3EX','SH1EN','SH1EX'.....

'SH2EN'};

update(conn,'SM',col,arr2,where);

i am getting error as "Input structure must contain fields of type double or cell"

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