From 1fd1eff893f5051586dfcce87a8c131a0e20552b Mon Sep 17 00:00:00 2001
From: "Peter J. Holzer" <hjp@wsr.ac.at>
Date: Tue, 22 Nov 2022 11:46:30 +0100
Subject: [PATCH] Dump column values

---
 table_info | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100755 table_info

diff --git a/table_info b/table_info
new file mode 100755
index 0000000..a2c55c7
--- /dev/null
+++ b/table_info
@@ -0,0 +1,34 @@
+#!/usr/bin/python3
+
+import argparse
+
+import MySQLdb
+
+ap = argparse.ArgumentParser()
+ap.add_argument("--host")
+ap.add_argument("--dbname")
+ap.add_argument("--user")
+ap.add_argument("--password")
+ap.add_argument("table")
+
+args = ap.parse_args()
+
+db = MySQLdb.connect(host=args.host, database=args.dbname, user=args.user, password=args.password)
+csr = db.cursor()
+
+csr.execute(f"select * from {args.table}")
+values = { x[0]: {} for x in csr.description}
+for r in csr:
+    for i in range(len(r)):
+        c = csr.description[i][0]
+        v = r[i]
+        if v not in values[c]:
+            values[c][v] = 0
+        values[c][v] += 1
+
+for c in values.keys():
+    n_values = len(values[c].keys())
+    n_unique = len([x for x in values[c].values() if x == 1])
+    print ("Column", c, n_values, "values", n_unique, "unique")
+    for v, count in values[c].items():
+        print("", v, count)