[incubator-doris] branch master updated: [Bug]Fix be crash caused by decimal to date (#4282)

[morningman]

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morningman pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-doris.git


The following commit(s) were added to refs/heads/master by this push:
     new bdbe59a  [Bug]Fix be crash caused by decimal to date (#4282)
bdbe59a is described below

commit bdbe59a41a4ec45fcdee1cae817b3ce016410035
Author: ZhangYu0123 <67053339+zhangyu0...@users.noreply.github.com>
AuthorDate: Sun Aug 9 20:47:43 2020 +0800

    [Bug]Fix be crash caused by decimal to date (#4282)
    
    Fix be crash caused by cast decimal to date. A be crashed bug caused by 
Unable to find. _ZN5doris18DecimalV2Operators16cast_to_date_val.
    also see #4281
---
 be/src/exprs/decimalv2_operators.cpp | 18 ++++++++++++++++++
 be/src/exprs/decimalv2_operators.h   |  1 +
 2 files changed, 19 insertions(+)

diff --git a/be/src/exprs/decimalv2_operators.cpp 
b/be/src/exprs/decimalv2_operators.cpp
index 0a57321..ef83616 100644
--- a/be/src/exprs/decimalv2_operators.cpp
+++ b/be/src/exprs/decimalv2_operators.cpp
@@ -147,6 +147,24 @@ DateTimeVal DecimalV2Operators::cast_to_datetime_val(
     return result;
 }
 
+DateTimeVal DecimalV2Operators::cast_to_date_val(
+        FunctionContext* context, const DecimalV2Val& val) {
+    if (val.is_null) {
+        return DateTimeVal::null();
+    }
+
+    // convert from DecimalV2Val to DecimalV2Value for caculation
+    const DecimalV2Value& dv = DecimalV2Value::from_decimal_val(val);
+    DateTimeValue dt;
+    if (!dt.from_date_int64(dv)) {
+        return DateTimeVal::null();
+    }
+    dt.cast_to_date();
+    DateTimeVal result;
+    dt.to_datetime_val(&result);
+    return result;
+}
+
 DecimalVal DecimalV2Operators::cast_to_decimal_val(
             FunctionContext* context, const DecimalV2Val& val) {
     if (val.is_null) return DecimalVal::null();
diff --git a/be/src/exprs/decimalv2_operators.h 
b/be/src/exprs/decimalv2_operators.h
index 8030985..06d8fee 100644
--- a/be/src/exprs/decimalv2_operators.h
+++ b/be/src/exprs/decimalv2_operators.h
@@ -54,6 +54,7 @@ public:
     static DoubleVal cast_to_double_val(FunctionContext*, const DecimalV2Val&);
     static StringVal cast_to_string_val(FunctionContext*, const DecimalV2Val&);
     static DateTimeVal cast_to_datetime_val(FunctionContext*, const 
DecimalV2Val&);
+    static DateTimeVal cast_to_date_val(FunctionContext*, const DecimalV2Val&);
     static DecimalVal cast_to_decimal_val(FunctionContext*, const 
DecimalV2Val&);
 
     static DecimalV2Val add_decimalv2_val_decimalv2_val(


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