enabled hypertables, from pg to timescale

timescaledb/enable_hypertables.txt

@@ -0,0 +1,53 @@
+postgres@loglab:/etc/postgresql/14/main$ psql
+psql (15.2 (Ubuntu 15.2-1.pgdg20.04+1), server 14.7 (Ubuntu 14.7-1.pgdg20.04+1))
+Type "help" for help.
+
+postgres=# CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;
+NOTICE:  extension "timescaledb" already exists, skipping
+CREATE EXTENSION
+postgres=# SELECT extname FROM pg_extension WHERE extname = 'timescaledb';
+   extname
+-------------
+ timescaledb
+(1 row)
+
+postgres=# SELECT create_hypertable('logs', 'timestamp');
+ERROR:  cannot create a unique index without the column "timestamp" (used in partitioning)
+postgres=# SELECT
+postgres-#     i.relname AS index_name,
+postgres-#     a.attname AS column_name
+postgres-# FROM
+postgres-#     pg_class t,
+postgres-#     pg_class i,
+postgres-#     pg_index ix,
+postgres-#     pg_attribute a
+postgres-# WHERE
+postgres-#     t.oid = ix.indrelid
+postgres-#     AND i.oid = ix.indexrelid
+postgres-#     AND a.attrelid = t.oid
+postgres-#     AND a.attnum = ANY(ix.indkey)
+postgres-#     AND t.relkind = 'r'
+postgres-#     AND t.relname = 'logs'
+postgres-#     AND ix.indisunique IS TRUE;
+ index_name | column_name
+------------+-------------
+ logs_pkey  | id
+(1 row)
+
+postgres=# ALTER TABLE logs DROP CONSTRAINT logs_pkey;
+ALTER TABLE
+postgres=# CREATE UNIQUE INDEX logs_unique_id_timestamp ON logs (id, timestamp);
+CREATE INDEX
+postgres=# SELECT create_hypertable('logs', 'timestamp');
+ create_hypertable
+-------------------
+ (3,public,logs,t)
+(1 row)
+
+postgres=# SELECT extname FROM pg_extension WHERE extname = 'timescaledb';
+   extname
+-------------
+ timescaledb
+(1 row)
+
+postgres=# \q