(doris) branch branch-2.0 updated: fix wrong result while cast const to double then to string #31657 (#31686)

[kxiao]

This is an automated email from the ASF dual-hosted git repository.

kxiao pushed a commit to branch branch-2.0
in repository https://gitbox.apache.org/repos/asf/doris.git


The following commit(s) were added to refs/heads/branch-2.0 by this push:
     new b350623f7b3 fix wrong result while cast const to double then to string 
#31657 (#31686)
b350623f7b3 is described below

commit b350623f7b3f65cfb1996102aca843bc5c49e9c6
Author: camby <camby...@tencent.com>
AuthorDate: Tue Mar 5 17:55:02 2024 +0800

    fix wrong result while cast const to double then to string #31657 (#31686)
---
 .../apache/doris/nereids/trees/expressions/literal/DoubleLiteral.java    | 1 +
 .../org/apache/doris/nereids/trees/expressions/literal/FloatLiteral.java | 1 +
 2 files changed, 2 insertions(+)

diff --git 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DoubleLiteral.java
 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DoubleLiteral.java
index b155fe30756..92c0172ec49 100644
--- 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DoubleLiteral.java
+++ 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DoubleLiteral.java
@@ -56,6 +56,7 @@ public class DoubleLiteral extends Literal {
     public String toString() {
         NumberFormat nf = NumberFormat.getInstance();
         nf.setGroupingUsed(false);
+        nf.setMaximumFractionDigits(16);
         return nf.format(value);
     }
 
diff --git 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/FloatLiteral.java
 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/FloatLiteral.java
index 95549901dda..b63de24a824 100644
--- 
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/FloatLiteral.java
+++ 
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/FloatLiteral.java
@@ -55,6 +55,7 @@ public class FloatLiteral extends Literal {
     public String getStringValue() {
         NumberFormat nf = NumberFormat.getInstance();
         nf.setGroupingUsed(false);
+        nf.setMaximumFractionDigits(7);
         return nf.format(value);
     }
 }


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