May 17, 2026, 11:40 PM

inbox/DataBase/PostgreSQL/dba_scripts/table_column_stats.sh

@@ -0,0 +1,83 @@
+#!/bin/bash
+# Reports statistics for all tables
+
+HOST=""
+PORT=""
+USER=""
+TBL=""
+
+usage() {
+    echo "Usage: $0 -d <dbname> -t <table> [-h <host> -U <user> -p <port>]"
+    exit 1
+}
+
+while getopts "d:h:p:t:U:u" OPT;
+do case "${OPT}" in
+      d) DBNAME=$OPTARG
+	 ;;
+      h) HOST="-h $OPTARG"
+	 ;;
+      p) PORT="-p $OPTARG"
+	 ;;
+      t) TBL=$OPTARG
+	 ;;
+      U) USER="-U $OPTARG"
+	 ;;
+      u) usage
+	 ;;
+    [?]) usage
+   esac;
+done
+
+if [ "$DBNAME" = "" ]
+  then
+    DBNAME="playmaker"
+fi
+
+if [ "$TBL" = "" ]
+  then
+    usage
+fi
+
+getver()
+{
+VER=$(psql -t $PORT $HOST $USER $DBNAME <<_QRYVER_
+SELECT version();
+_QRYVER_
+)
+}
+
+getver
+
+current_stats() {
+STATLIST=$(psql -q $HOST $PORT $USER $DBNAME <<_QUERY_
+
+SELECT schemaname, 
+       tablename,
+       attname As colname,
+       n_distinct,
+       array_to_string(most_common_vals, E'\n') AS common_vals,
+       array_to_string(most_common_freqs, E'\n') As dist_freq
+  FROM pg_stats
+ WHERE tablename = '$TBL'
+ ORDER BY schemaname,
+	  tablename,
+	  attname;
+
+_QUERY_
+
+)
+
+}
+
+##### MAIN #####
+echo "HOST=$HOST"
+echo "PORT=$PORT"
+echo "USER=$USER"
+echo "TBL=$TBL"
+echo "DBNAME=$DBNAME"
+
+current_stats
+echo "${STATLIST}"
+
+exit 0