added postgres_list_tables.sh

postgres_list_tables.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+#  vim:ts=4:sts=4:sw=4:et
+#
+#  Author: Hari Sekhon
+#  Date: 2020-03-12 16:40:27 +0000 (Thu, 12 Mar 2020)
+#
+#  https://github.com/harisekhon/bash-tools
+#
+#  License: see accompanying Hari Sekhon LICENSE file
+#
+#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
+#
+#  https://www.linkedin.com/in/harisekhon
+#
+
+# Lists all PostgreSQL tables using adjacent impala_shell.sh script
+#
+# FILTER environment variable will restrict to matching tables (matches against fully qualified table name <db>.<schema>.<table>)
+#
+# Tested on AWS RDS PostgreSQL 9.5.15
+
+set -euo pipefail
+[ -n "${DEBUG:-}" ] && set -x
+srcdir="$(dirname "$0")"
+
+#"$srcdir/psql.sh" -q -t -c "SELECT table_catalog || '.' || table_schema || '.' || table_name FROM information_schema.tables ORDER BY table_catalog, table_schema, table_name;" |
+"$srcdir/psql.sh" -q -t -c "SELECT table_catalog, table_schema, table_name FROM information_schema.tables ORDER BY table_catalog, table_schema, table_name;" |
+sed 's/|//g; s/^[[:space:]]*//; s/[[:space:]]*$//; /^[[:space:]]*$/d' |
+#while read -r table; do
+while read -r db schema table; do
+    if [ -n "${FILTER:-}" ] &&
+       ! [[ "$db.$schema.$table" =~ $FILTER ]]; then
+        continue
+    fi
+    printf "%s\t%s\t%s\n" "$db" "$schema" "$table"
+done