fix logical error

src/Processors/Formats/Impl/ValuesBlockInputFormat.cpp

@@ -24,6 +24,7 @@ namespace ErrorCodes
     extern const int TYPE_MISMATCH;
     extern const int SUPPORT_IS_DISABLED;
     extern const int ARGUMENT_OUT_OF_BOUND;
+    extern const int CANNOT_READ_ALL_DATA;
 }
 
 
@@ -412,6 +413,15 @@ void ValuesBlockInputFormat::readPrefix()
 
 void ValuesBlockInputFormat::readSuffix()
 {
+    if (!buf.eof() && *buf.position() == ';')
+    {
+        ++buf.position();
+        skipWhitespaceIfAny(buf);
+        if (buf.hasUnreadData())
+            throw Exception("Cannot read data after semicolon", ErrorCodes::CANNOT_READ_ALL_DATA);
+        return;
+    }
+
     if (buf.hasUnreadData())
         throw Exception("Unread data in PeekableReadBuffer will be lost. Most likely it's a bug.", ErrorCodes::LOGICAL_ERROR);
 }

tests/queries/0_stateless/01179_insert_values_semicolon.expect

@@ -0,0 +1,39 @@
+#!/usr/bin/expect -f
+
+log_user 0
+set timeout 5
+match_max 100000
+# A default timeout action is to do nothing, change it to fail
+expect_after {
+    timeout {
+        exit 1
+    }
+}
+
+set basedir [file dirname $argv0]
+spawn bash -c "source $basedir/../shell_config.sh ; \$CLICKHOUSE_CLIENT_BINARY \$CLICKHOUSE_CLIENT_OPT"
+expect ":) "
+
+send -- "DROP TABLE IF EXISTS test_01179\r"
+expect "Ok."
+
+send -- "CREATE TABLE test_01179 (date DateTime) ENGINE=Memory()\r"
+expect "Ok."
+
+send -- "INSERT INTO test_01179 values ('2020-01-01')\r"
+expect "Ok."
+
+send -- "INSERT INTO test_01179 values ('2020-01-01'); \r"
+expect "Ok."
+
+send -- "INSERT INTO test_01179 values ('2020-01-01'); (1) \r"
+expect "Cannot read data after semicolon"
+
+send -- "SELECT date, count() FROM test_01179 GROUP BY date FORMAT TSV\r"
+expect "2020-01-01 00:00:00\t3"
+
+send -- "DROP TABLE test_01179\r"
+expect "Ok."
+
+send -- "\4"
+expect eof