Fix ignored table if not in first input file

merge_sqlite_dbs.py

@@ -4,6 +4,7 @@ import shutil
 import sqlite3
 from pathlib import Path
 import logging
+import re
 
 
 def merge_sqlite_dbs(input_files, output_file, overwrite):
@@ -54,9 +55,34 @@ def merge_sqlite_dbs(input_files, output_file, overwrite):
             cur.execute("SELECT name FROM current_db.sqlite_master WHERE type='table';")
             all_tables = cur.fetchall()
             for table in all_tables:
+                table_name = table[0]
+                logger.debug("    > '%s' table", table_name)
+
+                try:
+                    # Create destination table with same signature as origin if it doesn't exist
+                    # (i) Get sql employed to create the table in the origin DB
+                    cur.execute(
+                        "SELECT sql FROM current_db.sqlite_master WHERE type='table' AND name='%s'"
+                        % (table_name)
+                    )
+                    # (ii) Create the table
+                    create_table_sql = re.sub(
+                        "create table",
+                        "CREATE TABLE IF NOT EXISTS",
+                        cur.fetchall()[0][0],
+                        flags=re.IGNORECASE,
+                    )
+                    cur.execute(create_table_sql)
+                except IndexError:
+                    raise RuntimeError(
+                        "Could not get sql for creation of table '%s' from input database."
+                        % (table_name)
+                    )
+
                 # Append data assuming same columns in the same position
-                logger.debug("    > '%s' table", table)
-                sql = "INSERT INTO {0} SELECT * FROM current_db.[{0}];".format(table[0])
+                sql = "INSERT INTO {0} SELECT * FROM current_db.[{0}];".format(
+                    table_name
+                )
                 cur.execute(sql)
                 conn.commit()