sql="create table forum_images(image_id integer not null, hash_image character varying(64) not null, base64_image character varying(10000000) not null, " \
"resnet50_image character varying(1000000) null, siftkey_image character varying(1000000) null, siftdesc_image character varying(1000000) null, " \
sql="create table forum_images(image_id integer not null, hash_image character varying(64) not null, base64_image text not null, " \
"resnet50_image text null, siftkey_image text null, siftdesc_image text null, " \
"dateinserted_image timestamp(6) with time zone not null, " \
sql="create table market_images(image_id integer not null, hash_image character varying(64) not null, base64_image character varying(10000000) not null, " \
"resnet50_image character varying(1000000) null, siftkey_image character varying(1000000) null, siftdesc_image character varying(1000000) null, " \
sql="create table market_images(image_id integer not null, hash_image character varying(64) not null, base64_image text not null, " \
"resnet50_image text null, siftkey_image text null, siftdesc_image text null, " \
"dateinserted_image timestamp(6) with time zone not null, " \