fix: correctly set primary key for data table

db_schema.sql

@@ -13,9 +13,9 @@ CREATE TABLE IF NOT EXISTS facts (
 
 CREATE TABLE IF NOT EXISTS data (
     cik INT,                            -- CIK of the company
-    fact_id VARCHAR(255),                 
+    fact_id VARCHAR(255),
+    end DATE,                 
     start DATE,                        -- Start date of the fact
-    end DATE,
     val INT,
     accn VARCHAR(255),
     fy INT,
@@ -23,7 +23,7 @@ CREATE TABLE IF NOT EXISTS data (
     form VARCHAR(255),
     filed DATE,
     frame VARCHAR(255),
-    PRIMARY KEY (cik, fact_id),
+    PRIMARY KEY (cik, fact_id, end),
     FOREIGN KEY (cik) REFERENCES entities(cik),
     FOREIGN KEY (fact_id) REFERENCES facts(id)
 );

stockdb.session.sql

@@ -1,29 +0,0 @@
-CREATE TABLE IF NOT EXISTS entities (
-    cik INT PRIMARY KEY,               -- CIK is now the primary key, ensuring uniqueness
-    name VARCHAR(255) NOT NULL  -- Name of the company
-);
-
-CREATE TABLE IF NOT EXISTS facts (
-    id VARCHAR(255) PRIMARY KEY, -- Unique identifier for the fact
-    taxonomy VARCHAR(255),       -- Taxonomy of the fact
-    label VARCHAR(255),       -- Label of the fact
-    description TEXT, -- Description of the fact
-    unit VARCHAR(255)           -- Unit of the fact
-);
-
-CREATE TABLE IF NOT EXISTS data (
-    cik INT,                            -- CIK of the company
-    fact_id VARCHAR(255),                 
-    start DATE,                        -- Start date of the fact
-    end DATE,
-    val INT,
-    accn VARCHAR(255),
-    fy INT,
-    fp VARCHAR(255),
-    form VARCHAR(255),
-    filed DATE,
-    frame VARCHAR(255),
-    PRIMARY KEY (cik, fact_id),
-    FOREIGN KEY (cik) REFERENCES entities(cik),
-    FOREIGN KEY (fact_id) REFERENCES facts(id)
-);