Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/2686#discussion_r86138263
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/api/table/expressions/ScalarFunctionsTest.scala
---
@@ -377,11 +378,79 @@ class ScalarFunctionsTest extends ExpressionTestBase {
"f4.power(f5)",
"POWER(f4, f5)",
math.pow(44.toLong, 4.5.toFloat).toString)
+
+ // f5: float
+ testAllApis('f5.power('f5), "f5.power(f5)", "power(f5, f5)",
math.pow(4.5F, 4.5F).toString)
+ testAllApis('f5.power('f6), "f5.power(f6)", "power(f5, f6)",
math.pow(4.5F, 4.6D).toString)
+ testAllApis('f5.power('f7), "f5.power(f7)", "power(f5, f7)",
math.pow(4.5F, 3).toString)
+ testAllApis('f5.power('f4), "f5.power(f4)", "power(f5, f4)",
math.pow(4.5F, 44L).toString)
+
+ // f22: bigDecimal
+ // TODO delete casting in SQL when CALCITE-1467 is fixed
+ testAllApis(
+ 'f22.cast(Types.DOUBLE).power('f4),
+ "f22.cast(DOUBLE).power(f5)",
+ "power(CAST(f22 AS DOUBLE), f5)",
+ "1.0")
+
+ testAllApis(
+ 'f22.cast(Types.DOUBLE).power('f5),
+ "f22.cast(DOUBLE).power(f6)",
+ "power(CAST(f22 AS DOUBLE), f6)",
+ "1.0")
+
+ testAllApis(
+ 'f22.cast(Types.DOUBLE).power('f7),
+ "f22.cast(DOUBLE).power(f7)",
+ "power(CAST(f22 AS DOUBLE), f7)",
+ "1.0")
+
+ testAllApis(
+ 'f22.cast(Types.DOUBLE).power('f4),
--- End diff --
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