Add tables

Co-authored-by: Ezequiel Bellver <ebellver@itba.edu.ar>
Co-authored-by: Juan Barmasch <jbarmasch@itba.edu.ar>

backend/main.py

@@ -47,7 +47,7 @@ def edit_name(id, name):
 
 def create_table(name):
     cur = conn.cursor()
-    cur.execute(sql.SQL("CREATE TABLE {table} ()").format(table=sql.Identifier(name)))
+    cur.execute(sql.SQL("CREATE TABLE {table} (row_number SERIAL PRIMARY KEY)").format(table=sql.Identifier(name)))
 
 
 def add_column(name, column, type):
@@ -62,20 +62,36 @@ def insert_column(name, column, data):
     pass
 
 
-def insert_columns(name, columns, data):
-    pass
+def insert_columns(name, data):
+    cur = conn.cursor()
+
+    str = "(" + "DEFAULT, %s," * (len(data) - 1) + "%s" + ")"  # TODO: change.
+    # cur.execute(sql.SQL("INSERT INTO {table} VALUES %s").format(
+    cur.execute(sql.SQL("INSERT INTO {table} VALUES" + str).format(
+        table=sql.Identifier(name)),
+        data
+    )
 
 
-def edit_column(name, column, data):
-    pass
+def edit_columns(name, columns, data, id):
+    cur = conn.cursor()
 
-
-def edit_columns(name, columns, data):
-    pass
+    i = 0
+    for column in columns:
+        cur.execute(sql.SQL("UPDATE {table} SET {col} = %s WHERE row_number = " + id).format(
+            table=sql.Identifier(name),
+            col=sql.Identifier(column)),
+            [data[i]]
+        )
+        i += 1
 
 
 def remove_column(name, column):
-    pass
+    cur = conn.cursor()
+    cur.execute(sql.SQL("ALTER TABLE {table} DROP COLUMN {column}").format(
+        table=sql.Identifier(name),
+        column=sql.Identifier(column))
+    )
 
 
 def create_sort(name):