ALTER primary key tests [#CLICKHOUSE-2027]

dbms/tests/queries/0_stateless/00427_alter_primary_key.reference

@@ -0,0 +1,4 @@
+query failed
+query failed
+foo	1486598400	1
+bar	1486598400	1

dbms/tests/queries/0_stateless/00427_alter_primary_key.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+
+function perform()
+{
+	local query=$1
+	TZ=UTC clickhouse-client \
+		--use_client_time_zone=1 \
+		--input_format_values_interpret_expressions=0 \
+		--query "$query" 2>/dev/null
+	if [ "$?" -ne 0 ]; then
+		echo "query failed"
+	fi
+}
+
+perform "DROP TABLE IF EXISTS test.alter"
+perform "CREATE TABLE test.alter (d Date, a Enum8('foo'=1), b DateTime, c DateTime) ENGINE=MergeTree(d, (a, b, toTime(c)), 8192)"
+
+perform "INSERT INTO test.alter VALUES ('2017-02-09', 'foo', '2017-02-09 00:00:00', '2017-02-09 00:00:00')"
+
+# Must fail because d is used as as a date column in MergeTree
+perform "ALTER TABLE test.alter MODIFY COLUMN d UInt16"
+
+perform "ALTER TABLE test.alter MODIFY COLUMN a Enum8('foo'=1, 'bar'=2)"
+perform "ALTER TABLE test.alter MODIFY COLUMN b UInt32"
+
+# Must fail because column c is used in primary key via an expression.
+perform "ALTER TABLE test.alter MODIFY COLUMN c UInt32"
+
+perform "INSERT INTO test.alter VALUES ('2017-02-09', 'bar', 1486598400, '2017-02-09 00:00:00')"
+
+perform "SELECT a, b, b = toUnixTimestamp(c) FROM test.alter ORDER BY a FORMAT TSV"
+
+perform "DROP TABLE test.alter"