notebook

20 Medicus all tables.py

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+import fdb
+
+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()
+
+# Query all user tables and their columns
+cur.execute("""
+SELECT
+    rf.rdb$relation_name      AS table_name,
+    rf.rdb$field_name         AS column_name,
+    f.rdb$field_type          AS field_type,
+    f.rdb$field_sub_type      AS field_subtype,
+    f.rdb$field_length        AS field_length,
+    f.rdb$field_precision     AS field_precision,
+    f.rdb$field_scale         AS field_scale,
+    f.rdb$null_flag           AS not_null
+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
+ORDER BY rf.rdb$relation_name, rf.rdb$field_position
+""")
+
+# helper to translate Firebird numeric codes to SQL types
+fb_types = {
+    7:  "SMALLINT",
+    8:  "INTEGER",
+    10: "FLOAT",
+    12: "DATE",
+    13: "TIME",
+    14: "CHAR",
+    16: "BIGINT/NUMERIC",
+    27: "DOUBLE",
+    35: "TIMESTAMP",
+    37: "VARCHAR",
+    261:"BLOB"
+}
+
+schema = {}
+for row in cur.fetchall():
+    table  = row[0].strip()
+    column = row[1].strip()
+    ftype  = fb_types.get(row[2], f"TYPE{row[2]}")
+    subtype = row[3]
+    length = row[4]
+    precision = row[5]
+    scale = row[6]
+    not_null = bool(row[7])
+
+    # Build human-readable type
+    if ftype in ("CHAR","VARCHAR"):
+        dtype = f"{ftype}({length})"
+    elif ftype == "BIGINT/NUMERIC" and precision:
+        dtype = f"NUMERIC({precision},{-scale})"
+    else:
+        dtype = ftype
+
+    coldef = f"{column} {dtype}{' NOT NULL' if not_null else ''}"
+    schema.setdefault(table, []).append(coldef)
+
+# Pretty print
+for t, cols in schema.items():
+    print(f"\nTable: {t}")
+    for c in cols:
+        print("   ", c)