From 831233e6a7f91a1523489433cd91c2de810b18b7 Mon Sep 17 00:00:00 2001
From: "jie.wang" <38901892+jievince@users.noreply.github.com>
Date: Mon, 8 Feb 2021 15:52:30 +0800
Subject: [PATCH] Support sign function in parser (#740)
* support function sign in parser
* add test
Co-authored-by: Yee <2520865+yixinglu@users.noreply.github.com>
---
src/parser/parser.yy | 3 +++
.../features/expression/FunctionCall.feature | 18 ++++++++++++++++++
2 files changed, 21 insertions(+)
create mode 100644 tests/tck/features/expression/FunctionCall.feature
diff --git a/src/parser/parser.yy b/src/parser/parser.yy
index d68ff21d..2a9643d8 100644
--- a/src/parser/parser.yy
+++ b/src/parser/parser.yy
@@ -893,6 +893,9 @@ function_call_expression
| KW_TAGS L_PAREN opt_argument_list R_PAREN {
$$ = new FunctionCallExpression(new std::string("tags"), $3);
}
+ | KW_SIGN L_PAREN opt_argument_list R_PAREN {
+ $$ = new FunctionCallExpression(new std::string("sign"), $3);
+ }
;
aggregate_expression
diff --git a/tests/tck/features/expression/FunctionCall.feature b/tests/tck/features/expression/FunctionCall.feature
new file mode 100644
index 00000000..8b601691
--- /dev/null
+++ b/tests/tck/features/expression/FunctionCall.feature
@@ -0,0 +1,18 @@
+# Copyright (c) 2021 vesoft inc. All rights reserved.
+#
+# This source code is licensed under Apache 2.0 License,
+# attached with Common Clause Condition 1.0, found in the LICENSES directory.
+Feature: Function Call Expression
+
+ Background:
+ Given a graph with space named "nba"
+
+ Scenario: sign
+ When executing query:
+ """
+ YIELD sign(38) AS a, sign(-2) AS b, sign(0.421) AS c,
+ sign(-1.0) AS d, sign(0) AS e, sign(abs(-3)) AS f
+ """
+ Then the result should be, in any order:
+ | a | b | c | d | e | f |
+ | 1 | -1 | 1 | -1 | 0 | 1 |
--
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