[Fix](Planner) fix case function with null cast to array null

apache · Aug 16, 2023 · 5b2cdc4 · 5b2cdc4
1 parent d371101
commit 5b2cdc4
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Showing 3 changed files with 9 additions and 2 deletions.
diff --git a/fe/fe-core/src/main/java/org/apache/doris/analysis/CastExpr.java b/fe/fe-core/src/main/java/org/apache/doris/analysis/CastExpr.java
@@ -314,7 +314,7 @@ public void analyze() throws AnalysisException {
         // it is necessary to check if it is castable before creating fn.
         // char type will fail in canCastTo, so for compatibility, only the cast of array type is checked here.
         if (type.isArrayType() || childType.isArrayType()) {
-            if (childType.isNull() || !Type.canCastTo(childType, type)) {
+            if (!Type.canCastTo(childType, type)) {
                 throw new AnalysisException("Invalid type cast of " + getChild(0).toSql()
                         + " from " + childType + " to " + type);
             }

diff --git a/regression-test/data/query_p0/sql_functions/case_function/test_case_function_null.out b/regression-test/data/query_p0/sql_functions/case_function/test_case_function_null.out
@@ -16,3 +16,6 @@
 -- !sql_case2 --
 -2
 
+-- !sql_case3 --
+0
+
diff --git a/regression-test/suites/query_p0/sql_functions/case_function/test_case_function_null.groovy b/regression-test/suites/query_p0/sql_functions/case_function/test_case_function_null.groovy
@@ -228,4 +228,8 @@ suite("test_case_function_null", "query,p0") {
             END)
         FROM case_null2;
     """
-}
+
+
+    qt_sql_case3 """SELECT COUNT(CASE (NOT (NOT true))  WHEN (((- 47960023)) IS NOT NULL) THEN NULL ELSE NULL END) from case_null1;"""
+
+}
Original file line number	Diff line number	Diff line change
Expand Up		@@ -16,3 +16,6 @@
		-- !sql_case2 --
		-2

		-- !sql_case3 --
		0
-Original file line number
+Diff line change
@@ Expand Up / @@ -228,4 +228,8 @@ suite("test_case_function_null", "query,p0") { @@
                 END)
             FROM case_null2;
         """
-    }
+        qt_sql_case3 """SELECT COUNT(CASE (NOT (NOT true))  WHEN (((- 47960023)) IS NOT NULL) THEN NULL ELSE NULL END) from case_null1;"""
+    }