#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import fdb

CODE = "0255910"

con = fdb.connect(
    host='192.168.1.4',
    database=r'z:\MEDICUS 3\data\medicus.FDB',
    user='sysdba',
    password='masterkey',
    charset='WIN1250'
)
cur = con.cursor()

# --- find every user-table column defined as CHAR(7) ---
cur.execute("""
SELECT
    TRIM(rf.rdb$relation_name)  AS table_name,
    TRIM(rf.rdb$field_name)     AS column_name
FROM rdb$relation_fields rf
JOIN rdb$fields f
  ON rf.rdb$field_source = f.rdb$field_name
JOIN rdb$relations r
  ON rf.rdb$relation_name = r.rdb$relation_name
WHERE
    r.rdb$system_flag = 0           -- only user tables
    AND r.rdb$view_blr IS NULL      -- exclude views
    AND f.rdb$field_type = 14       -- CHAR
    AND f.rdb$field_length = 7      -- exactly CHAR(7)
ORDER BY rf.rdb$relation_name, rf.rdb$field_position
""")

columns = cur.fetchall()
matches = []

# --- check each CHAR(7) column for exact match ---
for table_name, column_name in columns:
    sql_count = f'''
        SELECT COUNT(*)
        FROM "{table_name}"
        WHERE "{column_name}" = ?
    '''
    try:
        cur.execute(sql_count, (CODE,))
        cnt = cur.fetchone()[0]
    except Exception as e:
        print(f"Skipped {table_name}.{column_name}: {e}")
        continue

    if cnt > 0:
        sql_sample = f'''
            SELECT FIRST 5 "{column_name}"
            FROM "{table_name}"
            WHERE "{column_name}" = ?
        '''
        cur.execute(sql_sample, (CODE,))
        samples = [s.strip() if s else "" for (s,) in cur.fetchall()]
        matches.append((table_name, column_name, int(cnt), samples))

# --- report ---
if not matches:
    print(f'No exact matches for "{CODE}" in any CHAR(7) column.')
else:
    print(f'Exact matches for "{CODE}" in CHAR(7) columns:')
    for t, c, cnt, samples in matches:
        print(f'  - {t}.{c}: {cnt} row(s)')
        for s in samples:
            print(f'      sample: {s}')

con.close()