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commit 9ebeea96e3eb0c5f76c3fe06934e8cc544559c0a
Author: zoudan <[email protected]>
AuthorDate: Wed Jun 14 10:45:35 2023 +0800

    adjust operand type checker
---
 .../src/main/java/org/apache/calcite/sql/fun/SqlLibraryOperators.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git 
a/core/src/main/java/org/apache/calcite/sql/fun/SqlLibraryOperators.java 
b/core/src/main/java/org/apache/calcite/sql/fun/SqlLibraryOperators.java
index 38f3e4110a..6f7485f5e0 100644
--- a/core/src/main/java/org/apache/calcite/sql/fun/SqlLibraryOperators.java
+++ b/core/src/main/java/org/apache/calcite/sql/fun/SqlLibraryOperators.java
@@ -1238,13 +1238,13 @@ public abstract class SqlLibraryOperators {
   public static final SqlFunction FROM_BASE32 =
       SqlBasicFunction.create("FROM_BASE32",
           ReturnTypes.VARBINARY_NULLABLE,
-          OperandTypes.STRING, SqlFunctionCategory.STRING);
+          OperandTypes.CHARACTER, SqlFunctionCategory.STRING);
 
   @LibraryOperator(libraries = {BIG_QUERY})
   public static final SqlFunction TO_BASE32 =
       SqlBasicFunction.create("TO_BASE32",
           ReturnTypes.VARCHAR_NULLABLE,
-          OperandTypes.STRING.or(OperandTypes.BINARY),
+          OperandTypes.STRING,
           SqlFunctionCategory.STRING);
 
   /** The "TO_CHAR(timestamp, format)" function;

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