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"""Example of a select query to an Oracle Database"""
import cx_Oracle

# Establish the database connection
dbh = cx_Oracle.connect(user='AIS_RPC',
                        password='********',
                        dsn="hydra2"
                        )

# Obtain a cursor and execute query
num_N_SUBJECT_ID = 100
cursor = dbh.cursor()
cursor.execute("""SELECT VC_SUBJ_TYPE_NAME, VC_CODE
FROM SI_V_SUBJECTS
WHERE N_SUBJECT_ID = 100:num_N_SUBJECT_ID""", [num_N_SUBJECT_ID])

# Fetch column names and data as an associative array
columns = [i[0] for i in cursor.description]
data = [dict(zip(columns, row)) for row in cursor.fetchall()]

# Print data
for row in data:
    print(f"VC_SUBJ_TYPE_NAME: {row['VC_SUBJ_TYPE_NAME']}")
    print(f"VC_CODE: {row['VC_CODE']}")


# Close the database connection
dbh.close()