How many power stations are connected to grid at Heysham 2
CREATE TABLE table_143352_1 (connected_to_grid VARCHAR, agr_power_station VARCHAR)
SELECT COUNT(connected_to_grid) FROM table_143352_1 WHERE agr_power_station = "Heysham 2"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_143352_1 (connected_to_grid VARCHAR, agr_power_station VARCHAR) Question: How many power stations are connected to grid at Heysham 2 [/INST] SELECT COUNT(connected_to_grid) FROM table_143352_1 WHERE agr_power_station = "Heysham 2" </s>