[GRASS-user] Error while executing: 'CREATE TEMPORARY TABLE...

[Markus Neteler]

Hi,

On Sat, Feb 16, 2019 at 12:28 AM Jamille Haarloo <j.r.haarloo at gmail.com> wrote:
>
> Dear Grass community,
>
> I don't have any success with removal of columns from a vector file I am working with, while adding columns has not been a problem.
>
> output:
> v.db.dropcolumn map=nvTrainingset_test2019_clean at LUP1 columns=code
> ERROR: Error while executing: 'CREATE TEMPORARY TABLE nvTrainingset_test2019_clean_backup(cat INTEGER, compact_circle DOUBLE PRECISION, DV2_mean DOUBLE PRECISION, DV2_stddev DOUBLE PRECISION, DV2_variance DOUBLE PRECISION, DV2_coeff_var DOUBLE PRECISION, DV2_first_quart DOUBLE PRECISION, DV2_median DOUBLE PRECISION, DV2_third_quart DOUBLE PRECISION, DV2_perc_90 DOUBLE PRECISION, DV4_mean DOUBLE PRECISION, DV4_stddev DOUBLE PRECISION, DV4_variance DOUBLE PRECISION, DV4_coeff_var DOUBLE PRECISION, DV4_first_quart DOUBLE PRECISION, DV4_median DOUBLE PRECISION, DV4_third_quart DOUBLE PRECISION, DV4_perc_90 DOUBLE PRECISION, IDM2_mean DOUBLE PRECISION, IDM2_stddev DOUBLE PRECISION, IDM2_variance DOUBLE PRECISION, IDM2_coeff_var DOUBLE PRECISION, IDM2_first_quart DOUBLE PRECISION, IDM2_median DOUBLE PRECISION, IDM2_third_quart DOUBLE PRECISION, IDM2_perc_90 DOUBLE PRECISION, IDM4_mean DOUBLE PRECISION, IDM4_stddev DOUBLE PRECISION, IDM4_variance DOUBLE PRECISION, IDM4_coeff_var DOUBLE PRECISION, IDM4_first_quart DOUBLE PRECISION, IDM4_median DOUBLE PRECISION, IDM4_third_quart DOUBLE PRECISION, IDM4_perc_90 DOUBLE PRECISION, W2_mean DOUBLE PRECISION, W2_stddev DOUBLE PRECISION, W2_variance DOUBLE PRECISION, W2_coeff_var DOUBLE PRECISION, W2_first_quart DOUBLE PRECISION, W2_median DOUBLE PRECISION, W2_third_quart DOUBLE PRECISION, W2_perc_90 DOUBLE PRECISION, W4_mean DOUBLE PRECISION, W4_stddev DOUBLE PRECISION, W4_variance DOUBLE PRECISION, W4_coeff_var DOUBLE PRECISION, W4_first_quart DOUBLE PRECISION, W4_median DOUBLE PRECISION, W4_third_quart DOUBLE PRECISION, W4_perc_90 DOUBLE PRECISION, neighbors_count DOUBLE PRECISION, compact_circle_nbrmean DOUBLE PRECISION, compact_circle_nbrstddev DOUBLE PRECISION, DV2_mean_nbrmean DOUBLE PRECISION, DV2_mean_nbrstddev DOUBLE PRECISION, DV2_stddev_nbrmean DOUBLE PRECISION, DV2_stddev_nbrstddev DOUBLE PRECISION, DV2_variance_nbrmean DOUBLE PRECISION, DV2_variance_nbrstddev DOUBLE PRECISION, DV2_coeff_var_nbrmean DOUBLE PRECISION, DV2_coeff_var_nbrstddev DOUBLE PRECISION, DV2_first_quart_nbrmean DOUBLE PRECISION, DV2_first_quart_nbrstddev DOUBLE PRECISION, DV2_median_nbrmean DOUBLE PRECISION, DV2_median_nbrstddev DOUBLE PRECISION, DV2_third_quart_nbrmean DOUBLE PRECISION, DV2_third_quart_nbrstddev DOUBLE PRECISION, DV2_perc_90_nbrmean DOUBLE PRECISION, DV2_perc_90_nbrstddev DOUBLE PRECISION, DV4_mean_nbrmean DOUBLE PRECISION, DV4_mean_nbrstddev DOUBLE PRECISION, DV4_stddev_nbrmean DOUBLE PRECISION, DV4_stddev_nbrstddev DOUBLE PRECISION, DV4_variance_nbrmean DOUBLE PRECISION, DV4_variance_nbrstddev DOUBLE PRECISION, DV4_coeff_var_nbrmean DOUBLE PRECISION, DV4_coeff_var_nbrstddev DOUBLE PRECISION, DV4_first_quart_nbrmean DOUBLE PRECISION, DV4_first_quart_nbrstddev DOUBLE PRECISION, DV4_median_nbrmean DOUBLE PRECISION, DV4_median_nbrstddev DOUBLE PRECISION, DV4_third_quart_nbrmean DOUBLE PRECISION, DV4_third_quart_nbrstddev DOUBLE PRECISION, DV4_perc_90_nbrmean DOUBLE PRECISION, DV4_perc_90_nbrstddev DOUBLE PRECISION, IDM2_mean_nbrmean DOUBLE PRECISION, IDM2_mean_nbrstddev DOUBLE PRECISION, IDM2_stddev_nbrmean DOUBLE PRECISION, IDM2_stddev_nbrstddev DOUBLE PRECISION, IDM2_variance_nbrmean DOUBLE PRECISION, IDM2_variance_nbrstddev DOUBLE PRECISION, IDM2_coeff_var_nbrmean DOUBLE PRECISION, IDM2_coeff_var_nbrstddev DOUBLE PRECISION, IDM2_first_quart_nbrmean DOUBLE PRECISION, IDM2_first_quart_nbrstddev DOUBLE PRECISION, IDM2_median_nbrmean DOUBLE PRECISION, IDM2_median_nbrstddev DOUBLE PRECISION, IDM2_third_quart_nbrmean DOUBLE PRECISION, IDM2_third_quart_nbrstddev DOUBLE PRECISION, IDM2_perc_90_nbrmean DOUBLE PRECISION, IDM2_perc_90_nbrstddev DOUBLE PRECISION, IDM4_mean_nbrmean DOUBLE PRECISION, IDM4_mean_nbrstddev DOUBLE PRECISION, IDM4_stddev_nbrmean DOUBLE PRECISION, IDM4_stddev_nbrstddev DOUBLE PRECISION, IDM4_variance_nbrmean DOUBLE PRECISION, IDM4_variance_nbrstddev DOUBLE PRECISION, IDM4_coeff_var_nbrmean DOUBLE PRECISION, IDM4_coeff_var_nbrstddev DOUBLE PRECISION, IDM4_first_quart_nbrmean DOUBLE PRECISION, IDM4_first_quart_nbrstddev DOUBLE PRECISION, IDM4_median_n
> brmean DOUBLE PRECISION, IDM4_median_nbrstddev DOUBLE'
> ERROR: Deleting column failed
>
> Any suggestions?

I used "wc -c" to count the length of the string: it is 4096 characters.

Which DB driver do you use? It seems to be a limitation in the driver
communication, i.e. the buffer is limited.

Markus