PostgreSQL (Create Table)-CodePudding

I am trying to create a table. One of the columns; "start_lng" meaning start longitude, includes a negative decimal number (-87.223655662). As I create my columns what kind of data type would this categorize as. I was going to use INT but then I realized that can only include whole numbers. Then I thought about NUMERIC but I am confused on whether or not that can be negative or not. I have attached my code below. Please help.

CREATE TABLE may_2021 (
ride_id INTEGER NOT NULL,
rideable_type VARCHAR(50) NOT NULL,
started_at TIMESTAMP NOT NULL,
ended_at TIMESTAMP NOT NULL,
ride_length INTERVAL(1000) NOT NULL,
day_of_week INTEGER NOT NULL,
start_station_name TEXT,
start_station_id VARCHAR(75),
end_station_name TEXT,
end_station_id VARCHAR(75),
start_lat NUMERIC(15,15) NOT NULL,
start_lng NUMERIC(15,15) NOT NULL,
end_lat NUMERIC(15,15) NOT NULL,
end_lng NUMERIC(15,15) NOT NULL,
member_casual TEXT
)

CodePudding user response：

The correct data type for coordinates would be double precision.

The even more correct data type to represent start_lat and start_lng would be point.

But the best thing you can do if you want to use these coordinates inside the database would be to install the PostGIS extension and model it as a geometry or geography.

CodePudding user response：

yes ,numeric data type allows negative values .