May 17, 2026, 11:40 PM

inbox/DataBase/PostgreSQL/dba_scripts/table_comments.sh

@@ -0,0 +1,101 @@
+#!/bin/bash
+# Shows comments for all or specified table
+
+USER=""
+PORT=""
+TBL=""
+
+usage() {
+    echo "Usage: $0 -d <dbname> [-t <table> -U <user> -p <port>]"
+    exit 1
+}
+
+while getopts "d:t:p:uU:" OPT;
+do case "${OPT}" in
+      d) DBNAME=$OPTARG
+	 ;;
+      p) PORT="-p $OPTARG"
+	 ;;
+      t) TBL=$OPTARG
+	 ;;
+      U) USER="-U $OPTARG"
+	 ;;
+      u) usage
+	 ;;
+    [?]) usage
+   esac;
+done
+
+if [ "$DBNAME" = "" ]
+  then
+    usage
+fi
+
+getver()
+{
+VER=$(psql $PORT -t $USER $DBNAME <<_QRYVER_
+SELECT version();
+_QRYVER_
+)
+}
+getver
+
+VER=$(echo $VER | cut -c -16)
+echo "Version is $VER"
+
+QRY="SELECT DISTINCT ON (c.relname)
+       n.nspname as schema,
+       c.relname,
+       a.rolname as owner,
+       0 as col_seq,
+       '' as column,
+       d.description as comment
+  FROM pg_class c
+LEFT  JOIN pg_attribute col ON (col.attrelid = c.oid)
+LEFT  JOIN pg_description d ON (d.objoid = col.attrelid AND d.objsubid = 0)
+  JOIN pg_namespace n ON (n.oid = c.relnamespace)
+  JOIN pg_authid a ON ( a.OID = c.relowner )
+  WHERE n.nspname NOT LIKE 'information%'
+  AND relname NOT LIKE 'pg_%'
+  AND relname NOT LIKE 'information%'
+  AND relname NOT LIKE 'sql_%'
+  AND relname LIKE '%$TBL%'
+  AND relkind = 'r'
+--  AND d.description IS NOT NULL
+UNION
+SELECT n.nspname as schema,
+       c.relname,
+       '' as owner,
+       col.attnum as col_seq,
+       col.attname as column,
+       d.description
+  FROM pg_class c
+  JOIN pg_attribute col ON (col.attrelid = c.oid)
+  LEFT JOIN pg_description d ON (d.objoid = col.attrelid AND d.objsubid = col.attnum)
+  JOIN pg_namespace n ON (n.oid = c.relnamespace)
+  JOIN pg_authid a ON ( a.OID = c.relowner )
+WHERE n.nspname NOT LIKE 'information%'
+  AND relname NOT LIKE 'pg_%'
+  AND relname NOT LIKE 'information%'
+  AND relname NOT LIKE 'sql_%'
+  AND relname LIKE '%$TBL%'
+  AND relkind = 'r'
+--  AND d.description IS NOT NULL
+  AND col.attnum >= 0
+ORDER BY 1, 2, 4;"
+
+current_stats() {
+STATLIST=$(psql $USER $PORT -q $DBNAME <<_QUERY_
+
+${QRY}
+
+_QUERY_
+
+)
+
+}
+
+current_stats
+echo "${STATLIST}"
+
+exit 0