Update international_debt.sql

3. Analyze International Debt Statistics/datasets/international_debt.sql

@@ -1,13 +1,25 @@
--- Table: international_debt
+-- Create Table: international_debt
+-- This table stores information about international debt for various countries
 
 CREATE TABLE international_debt
 (
-  country_name character varying(50),
-  country_code character varying(50),
-  indicator_name text,
-  indicator_code text,
-  debt numeric
+  country_name VARCHAR(50) NOT NULL,  -- Name of the country
+  country_code VARCHAR(10) NOT NULL,  -- ISO country code (assuming standard code length)
+  indicator_name TEXT NOT NULL,       -- Name of the debt indicator
+  indicator_code TEXT NOT NULL,       -- Code for the debt indicator
+  debt NUMERIC(18, 2) NOT NULL,       -- Debt amount with precision to handle large values and cents
+  CONSTRAINT pk_international_debt PRIMARY KEY (country_code, indicator_code)  -- Composite primary key
 );
 
--- Copy over data from CSV
-\copy international_debt FROM 'international_debt.csv' DELIMITER ',' CSV HEADER;
+-- Add indexes for better query performance
+CREATE INDEX idx_country_name ON international_debt(country_name);
+CREATE INDEX idx_indicator_name ON international_debt(indicator_name);
+
+-- Note: Ensure the CSV file path is correct and accessible by the database system
+
+-- Copy data from CSV file into the international_debt table
+\copy international_debt (country_name, country_code, indicator_name, indicator_code, debt)
+FROM '/path/to/international_debt.csv' DELIMITER ',' CSV HEADER;
+
+-- Validate the data import by checking the first few rows
+SELECT * FROM international_debt LIMIT 10;