Add real-time aggregation test to update test

This patch adds a continuous aggregate with real-time aggregation
enabled to the update test suite since we rebuild view definition
for real time aggregation during extension update.
The continuous aggregate is in its own schema because all view
definitions in the public schema are dumped and those view
definitions will change between versions.

test/sql/updates/post.continuous_aggs.v2.sql

@@ -0,0 +1,16 @@
+-- This file and its contents are licensed under the Apache License 2.0.
+-- Please see the included NOTICE for copyright information and
+-- LICENSE-APACHE for a copy of the license.
+
+\ir post.continuous_aggs.sql
+
+\d cagg.*
+
+SELECT * FROM cagg.realtime_mat ORDER BY bucket, location;
+
+REFRESH MATERIALIZED VIEW cagg.realtime_mat;
+
+SELECT * FROM cagg.realtime_mat ORDER BY bucket, location;
+
+SELECT view_name, refresh_lag, refresh_interval, max_interval_per_job, ignore_invalidation_older_than, materialized_only, materialization_hypertable FROM timescaledb_information.continuous_aggregates ORDER BY view_name::text;
+

test/sql/updates/post.v6-pg10.sql

@@ -4,5 +4,5 @@
 
 \ir post.v2.sql
 \ir post.compression.sql
-\ir post.continuous_aggs.sql
+\ir post.continuous_aggs.v2.sql
 

test/sql/updates/post.v6-pg11.sql

@@ -5,5 +5,5 @@
 \ir post.v2.sql
 \ir catalog_missing_columns.sql
 \ir post.compression.sql
-\ir post.continuous_aggs.sql
+\ir post.continuous_aggs.v2.sql
 

test/sql/updates/post.v6-pg12.sql

@@ -5,4 +5,4 @@
 \ir post.v2.sql
 \ir catalog_missing_columns.sql
 \ir post.compression.sql
-\ir post.continuous_aggs.sql
+\ir post.continuous_aggs.v2.sql

test/sql/updates/post.v6-pg96.sql

@@ -3,5 +3,5 @@
 -- LICENSE-APACHE for a copy of the license.
 
 \ir post.v2.sql
-\ir post.continuous_aggs.sql
+\ir post.continuous_aggs.v2.sql
 

test/sql/updates/setup.continuous_aggs.v2.sql

@@ -70,4 +70,55 @@ AS
   GROUP BY bucket, location
   HAVING min(location) >= 'NYC' and avg(temperature) > 2;
 
-  REFRESH MATERIALIZED VIEW mat_before;
+REFRESH MATERIALIZED VIEW mat_before;
+
+-- we create separate schema for realtime agg since we dump all view definitions in public schema
+-- but realtime agg view definition is not stable across versions
+CREATE SCHEMA cagg;
+
+CREATE VIEW cagg.realtime_mat
+WITH ( timescaledb.continuous, timescaledb.materialized_only=false, timescaledb.refresh_lag='-30 day', timescaledb.max_interval_per_job ='1000 day')
+AS
+  SELECT time_bucket('1week', timec) as bucket,
+    location,
+    min(allnull) as min_allnull,
+    max(temperature) as max_temp,
+    sum(temperature)+sum(humidity) as agg_sum_expr,
+    avg(humidity),
+    stddev(humidity),
+    bit_and(bit_int),
+    bit_or(bit_int),
+    bool_and(good_life),
+    every(temperature > 0),
+    bool_or(good_life),
+    count(*) as count_rows,
+    count(temperature) as count_temp,
+    count(allnull) as count_zero,
+    corr(temperature, humidity),
+    covar_pop(temperature, humidity),
+    covar_samp(temperature, humidity),
+    regr_avgx(temperature, humidity),
+    regr_avgy(temperature, humidity),
+    regr_count(temperature, humidity),
+    regr_intercept(temperature, humidity),
+    regr_r2(temperature, humidity),
+    regr_slope(temperature, humidity),
+    regr_sxx(temperature, humidity),
+    regr_sxy(temperature, humidity),
+    regr_syy(temperature, humidity),
+    stddev(temperature) as stddev_temp,
+    stddev_pop(temperature),
+    stddev_samp(temperature),
+    variance(temperature),
+    var_pop(temperature),
+    var_samp(temperature),
+    last(temperature, timec) as last_temp,
+    last(highlow, timec) as last_hl,
+    first(highlow, timec) as first_hl,
+    histogram(temperature, 0, 100, 5)
+  FROM conditions_before
+  GROUP BY bucket, location
+  HAVING min(location) >= 'NYC' and avg(temperature) > 2;
+
+REFRESH MATERIALIZED VIEW cagg.realtime_mat;
+