lincoln-lil commented on code in PR #23209:
URL: https://github.com/apache/flink/pull/23209#discussion_r1302375790


##########
flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/delegation/ParserImplTest.java:
##########
@@ -114,6 +115,18 @@ public void testCompletionTest() {
         verifySqlCompletion("SELECT a fram b", 10, new String[] {"FETCH", 
"FROM"});
     }
 
+    @Test
+    public void testSqlLike() {

Review Comment:
    Add a separate test class `SqlLikeUtilsTest` for this test because it's not 
related to the parser.



##########
flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/runtime/batch/sql/CalcITCase.scala:
##########
@@ -416,6 +416,30 @@ class CalcITCase extends BatchTestBase {
         row(3, 2L, "Hello world"),
         row(4, 3L, "Hello world, how are you?")
       ))
+
+    val rows = Seq(row(3, "H.llo"), row(3, "Hello"))
+    val dataId = TestValuesTableFactory.registerData(rows)
+
+    val ddl =
+      s"""
+         |CREATE TABLE MyTable (
+         |  a int,
+         |  c string
+         |) WITH (
+         |  'connector' = 'values',
+         |  'data-id' = '$dataId',
+         |  'bounded' = 'true'
+         |)
+         |""".stripMargin
+    tEnv.executeSql(ddl)
+
+    checkResult(
+      s"""
+         |SELECT c FROM MyTable
+         |  WHERE c LIKE 'H.llo'
+         |""".stripMargin,
+      Seq(row("H.llo"))
+    )

Review Comment:
   Also add sql case to cover the  `similar to` & `not similar to` syntax



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