Columns in vouchers table:
id                        | bigint          | NO    | nextval('vouchers_id_seq'::regclass)
merchant_id               | bigint          | NO    | 
category_id               | bigint          | NO    | 
voucher_template_id       | bigint          | YES   | 
voucher_count             | integer         | NO    | 
expiry_date               | date            | NO    | 
redeem_type               | character varying | NO    | 'both'::character varying
voucher_type              | character varying | NO    | 
flat_discount_amount      | numeric         | YES   | 
minimum_purchase_amount   | numeric         | YES   | 
percent_value             | numeric         | YES   | 
minimum_redeemable_amount | numeric         | YES   | 
maximum_discount_amount   | numeric         | YES   | 
buy_quantity              | integer         | YES   | 
get_quantity              | integer         | YES   | 
status                    | character varying | NO    | 'draft'::character varying
current_step              | integer         | NO    | 1
created_at                | timestamp without time zone | YES   | 
updated_at                | timestamp without time zone | YES   | 
voucher_title             | text            | YES   | 
image_url                 | text            | YES   | 
short_description         | text            | YES   | 
redeemed_count            | integer         | YES   | 0
claimed_count             | integer         | YES   | 0
bux_value                 | numeric         | NO    | 0
clicks                    | integer         | NO    | 0
buy_count                 | integer         | NO    | 0
rating                    | numeric         | NO    | 0
number_of_reviews         | integer         | NO    | 0
bux_required              | integer         | YES   | 0
bux_required_max          | integer         | YES   | 0
terms                     | text            | YES   | 
how_to_use                | text            | YES   | 
share_count               | integer         | YES   | 0
is_trending               | boolean         | YES   | false
start_date                | date            | YES   |