test: add basic cases for distributed TQL (#1437)

* test: add basic cases for distributed TQL

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

* drop table

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

---------

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

src/sql/src/parsers/tql_parser.rs

@@ -114,7 +114,8 @@ impl<'a> ParserContext<'a> {
                 // TODO(dennis): supports multi TQL statements separated by ';'?
             }
 
-            Ok(query.trim().to_string())
+            // remove the last ';' or tailing space if exists
+            Ok(query.trim().trim_end_matches(';').to_string())
         } else {
             Err(ParserError::ParserError(format!("{delimiter} not found",)))
         }

tests/cases/standalone/common/tql/basic.result

@@ -0,0 +1,32 @@
+CREATE TABLE test(i DOUBLE, j TIMESTAMP TIME INDEX, k STRING PRIMARY KEY);
+
+Affected Rows: 0
+
+INSERT INTO test VALUES (1, 1, "a"), (1, 1, "b"), (2, 2, "a");
+
+Affected Rows: 3
+
+TQL EVAL (0, 10, '5s') test;
+
++-----+---------------------+---+
+| i   | j                   | k |
++-----+---------------------+---+
+| 2.0 | 1970-01-01T00:00:05 | a |
+| 2.0 | 1970-01-01T00:00:10 | a |
+| 1.0 | 1970-01-01T00:00:05 | b |
+| 1.0 | 1970-01-01T00:00:10 | b |
++-----+---------------------+---+
+
+TQL EVAL (0, 10, '5s') test{k="a"};
+
++-----+---------------------+---+
+| i   | j                   | k |
++-----+---------------------+---+
+| 2.0 | 1970-01-01T00:00:05 | a |
+| 2.0 | 1970-01-01T00:00:10 | a |
++-----+---------------------+---+
+
+DROP TABLE test;
+
+Affected Rows: 1
+

tests/cases/standalone/common/tql/basic.sql

@@ -0,0 +1,12 @@
+CREATE TABLE test(i DOUBLE, j TIMESTAMP TIME INDEX, k STRING PRIMARY KEY);
+
+-- insert two points at 1ms and one point at 2ms
+INSERT INTO test VALUES (1, 1, "a"), (1, 1, "b"), (2, 2, "a");
+
+-- evaluate at 0s, 5s and 10s. No point at 0s.
+TQL EVAL (0, 10, '5s') test;
+
+-- the point at 1ms will be shadowed by the point at 2ms
+TQL EVAL (0, 10, '5s') test{k="a"};
+
+DROP TABLE test;