|
|
|
|
|
import sqlite3 |
|
import pandas as pd |
|
import pyarrow as pa |
|
import pyarrow.parquet as pq |
|
|
|
def sqlite_to_parquet(sqlite_file, parquet_file): |
|
conn = sqlite3.connect(sqlite_file) |
|
cur = conn.cursor() |
|
|
|
cur.execute("SELECT name FROM sqlite_master WHERE type='table';") |
|
tables = cur.fetchall() |
|
|
|
df_list = [] |
|
|
|
for table in tables: |
|
table_name = table[0] |
|
query = f'SELECT x, y, z, block_name as mat FROM "{table_name}"' |
|
df = pd.read_sql_query(query, conn) |
|
df['structure'] = table_name |
|
df_list.append(df) |
|
|
|
final_df = pd.concat(df_list, ignore_index=True) |
|
|
|
table = pa.Table.from_pandas(final_df) |
|
pq.write_table(table, parquet_file) |
|
|
|
conn.close() |
|
|
|
if __name__ == '__main__': |
|
sqlite_to_parquet('minecraft_structures.db', 'minecraft_structures.parquet') |
|
print("Conversion to Parquet completed successfully.") |
|
|
