### Database Schema:
CREATE TABLE gasstations (
	GasStationID	INTEGER	NOT NULL	PRIMARY KEY,
	ChainID	INTEGER	NULL,
	Country	TEXT	NULL,
	Segment	TEXT	NULL
);

CREATE TABLE customers (
	CustomerID	INTEGER	NOT NULL	PRIMARY KEY,
	Segment	TEXT	NULL,
	Currency	TEXT	NULL
);

CREATE TABLE yearmonth (
	CustomerID	INTEGER	NOT NULL	PRIMARY KEY,
	Date	TEXT	NOT NULL	PRIMARY KEY,
	Consumption	REAL	NULL,
	foreign key (CustomerID) references customers (CustomerID)
);

CREATE TABLE products (
	ProductID	INTEGER	NOT NULL	PRIMARY KEY,
	Description	TEXT	NULL
);

CREATE TABLE transactions_1k (
	TransactionID	INTEGER	NULL	PRIMARY KEY,
	Date	DATE	NULL,
	Time	TEXT	NULL,
	CustomerID	INTEGER	NULL,
	CardID	INTEGER	NULL,
	GasStationID	INTEGER	NULL,
	ProductID	INTEGER	NULL,
	Amount	INTEGER	NULL,
	Price	REAL	NULL
);

### User's Query:
How many more "discount" gas stations does the Czech Republic have compared to Slovakia?

### Extra Knowledge:
Czech Republic can be represented as the Country value in gasstations table is 'CZE'; Slovakia can be represented as the Country value in the gasstations table is 'SVK';  Computation of more "discount" gas stations= Total no. of discount gas stations in Czech Republic - Total no. of discount gas stations in Slovakia
SELECT SUM(IIF(Country = 'CZE', 1, 0)) - SUM(IIF(Country = 'SVK', 1, 0)) FROM gasstations WHERE Segment = 'Discount'