From 8b1c393236e0a5e02949dc3a2e80fd88ed25af6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E9=B2=B2=E9=B9=8F?= <xukunpeng2@huawei.com>
Date: Thu, 10 Sep 2020 16:02:46 +0800
Subject: [PATCH 1/6] =?UTF-8?q?=E4=BF=AE=E6=94=B9lpad=E5=87=BD=E6=95=B0?=
 =?UTF-8?q?=E5=AF=B9=E6=9C=80=E5=A4=A7=E5=AD=98=E5=82=A8=E7=A9=BA=E9=97=B4?=
 =?UTF-8?q?=E5=90=8C=E4=B8=BA10M=E7=9A=84=E5=AD=97=E7=AC=A6=E7=B1=BB?=
 =?UTF-8?q?=E5=9E=8B=E5=9C=A8=E8=B6=85=E8=BF=87=E5=AD=98=E5=82=A8=E4=B8=8A?=
 =?UTF-8?q?=E9=99=90=E6=97=B6=E7=9A=84=E5=A4=84=E7=90=86=E6=96=B9=E5=BC=8F?=
 =?UTF-8?q?=E4=B8=8D=E4=B8=80=E8=87=B4=E7=9A=84=E9=97=AE=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/common/backend/utils/adt/varchar.cpp | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/src/common/backend/utils/adt/varchar.cpp b/src/common/backend/utils/adt/varchar.cpp
index 6cb9f0dae..aabc2bf11 100755
--- a/src/common/backend/utils/adt/varchar.cpp
+++ b/src/common/backend/utils/adt/varchar.cpp
@@ -572,12 +572,6 @@ Datum varchar(PG_FUNCTION_ARGS)
 
     /* only reach here if string is too long... */
 
-    if (len > MaxAttrSize) {
-        ereport(ERROR,
-            (errcode(ERRCODE_STRING_DATA_RIGHT_TRUNCATION),
-                errmsg("value too long for type character varying maxlen(%d) input_len(%d)", MaxAttrSize, len)));
-    }
-
     /* truncate multibyte string preserving multibyte boundary */
     max_mb_len = pg_mbcharcliplen(s_data, len, max_len);
 

From dfb249e45d271f9618f67c796f8a75087c5fe101 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E9=B2=B2=E9=B9=8F?= <xukunpeng2@huawei.com>
Date: Thu, 10 Sep 2020 16:04:05 +0800
Subject: [PATCH 2/6] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E9=AA=8C=E8=AF=81lpad?=
 =?UTF-8?q?=E5=87=BD=E6=95=B0=E5=AF=B9=E6=9C=80=E5=A4=A7=E5=AD=98=E5=82=A8?=
 =?UTF-8?q?=E7=A9=BA=E9=97=B4=E5=90=8C=E4=B8=BA10M=E7=9A=84=E5=AD=97?=
 =?UTF-8?q?=E7=AC=A6=E7=B1=BB=E5=9E=8B=E5=9C=A8=E8=B6=85=E8=BF=87=E5=AD=98?=
 =?UTF-8?q?=E5=82=A8=E4=B8=8A=E9=99=90=E6=97=B6=E7=9A=84=E5=A4=84=E7=90=86?=
 =?UTF-8?q?=E6=96=B9=E5=BC=8F=E4=B8=8D=E4=B8=80=E8=87=B4=E9=97=AE=E9=A2=98?=
 =?UTF-8?q?=E7=9A=84=E6=B5=8B=E8=AF=95=E6=A0=B7=E4=BE=8B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/test/regress/sql/varchar.sql | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/test/regress/sql/varchar.sql b/src/test/regress/sql/varchar.sql
index 7cfbb6bde..9df4c133f 100644
--- a/src/test/regress/sql/varchar.sql
+++ b/src/test/regress/sql/varchar.sql
@@ -68,3 +68,7 @@ SELECT '' AS four, * FROM VARCHAR_TBL ORDER BY f1;
 select char_length(to_char(lpad('abc', 1024 * 1024 *10, 'x')));
 
 select char_length(to_char(lpad('abc', 1024 * 1024 *10 + 1, 'x')));
+
+SELECT char_length(lpad('abcCC',1024*1024*11,'x')::varchar2(10485760));
+
+SELECT char_length(lpad('abcCC',1024*1024*11,'x')::varchar(10485760));
\ No newline at end of file

From 3865898f0fb87d2002d4ee142e1b47f0df10aeaf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E9=B2=B2=E9=B9=8F?= <xukunpeng2@huawei.com>
Date: Thu, 10 Sep 2020 16:08:04 +0800
Subject: [PATCH 3/6] =?UTF-8?q?=E6=9B=B4=E6=96=B0=E6=B5=8B=E8=AF=95?=
 =?UTF-8?q?=E6=A0=B7=E4=BE=8B=E7=BB=93=E6=9E=9C=20=E5=A2=9E=E5=8A=A0?=
 =?UTF-8?q?=E9=AA=8C=E8=AF=81lpad=E5=87=BD=E6=95=B0=E5=AF=B9=E6=9C=80?=
 =?UTF-8?q?=E5=A4=A7=E5=AD=98=E5=82=A8=E7=A9=BA=E9=97=B4=E5=90=8C=E4=B8=BA?=
 =?UTF-8?q?10M=E7=9A=84=E5=AD=97=E7=AC=A6=E7=B1=BB=E5=9E=8B=E5=9C=A8?=
 =?UTF-8?q?=E8=B6=85=E8=BF=87=E5=AD=98=E5=82=A8=E4=B8=8A=E9=99=90=E6=97=B6?=
 =?UTF-8?q?=E7=9A=84=E5=A4=84=E7=90=86=E6=96=B9=E5=BC=8F=E4=B8=8D=E4=B8=80?=
 =?UTF-8?q?=E8=87=B4=E9=97=AE=E9=A2=98=E7=9A=84=E6=B5=8B=E8=AF=95=E6=A0=B7?=
 =?UTF-8?q?=E4=BE=8B=20=E7=94=B1=E4=BA=8E=E4=BF=AE=E6=94=B9=E4=BA=86varcha?=
 =?UTF-8?q?r.cpp=E4=B8=AD=E7=9A=84varchar=E5=87=BD=E6=95=B0=E5=AF=BC?=
 =?UTF-8?q?=E8=87=B4=E6=B5=8B=E8=AF=95=E6=A0=B7=E4=BE=8Bselect=20char=5Fle?=
 =?UTF-8?q?ngth(to=5Fchar(lpad('abc',=201024=20*=201024=20*10=20+=201,=20'?=
 =?UTF-8?q?x')));=E7=9A=84=E6=B5=8B=E8=AF=95=E7=BB=93=E6=9E=9C=E5=8F=91?=
 =?UTF-8?q?=E7=94=9F=E4=BA=86=E6=94=B9=E5=8F=98=EF=BC=8C=E5=9B=A0=E6=AD=A4?=
 =?UTF-8?q?=E4=B8=80=E5=B9=B6=E5=AF=B9=E5=85=B6=E8=BF=9B=E8=A1=8C=E4=BA=86?=
 =?UTF-8?q?=E4=B8=AA=E6=9B=B4=E6=96=B0=EF=BC=8C=20=E5=8D=B3=EF=BC=9A=20?=
 =?UTF-8?q?=E6=9B=B4=E6=96=B0select=20char=5Flength(to=5Fchar(lpad('abc',?=
 =?UTF-8?q?=201024=20*=201024=20*10=20+=201,=20'x')));=20=E6=B5=8B?=
 =?UTF-8?q?=E8=AF=95=E6=A0=B7=E4=BE=8B=E7=9A=84=E6=B5=8B=E8=AF=95=E7=BB=93?=
 =?UTF-8?q?=E6=9E=9C=EF=BC=8C=20=E5=A2=9E=E5=8A=A0SELECT=20char=5Flength(l?=
 =?UTF-8?q?pad('abcCC',1024*1024*11,'x')::varchar2(10485760));=20=E5=92=8C?=
 =?UTF-8?q?=20SELECT=20char=5Flength(lpad('abcCC',1024*1024*11,'x')::varch?=
 =?UTF-8?q?ar(10485760));=20=E6=B5=8B=E8=AF=95=E6=A0=B7=E4=BE=8B=E7=9A=84?=
 =?UTF-8?q?=E6=B5=8B=E8=AF=95=E7=BB=93=E6=9E=9C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/test/regress/expected/varchar.out | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/test/regress/expected/varchar.out b/src/test/regress/expected/varchar.out
index 2759e06a2..d41c007b6 100644
--- a/src/test/regress/expected/varchar.out
+++ b/src/test/regress/expected/varchar.out
@@ -115,7 +115,19 @@ select char_length(to_char(lpad('abc', 1024 * 1024 *10, 'x')));
 (1 row)
 
 select char_length(to_char(lpad('abc', 1024 * 1024 *10 + 1, 'x')));
-ERROR:  value too long for type character varying maxlen(10485760) input_len(10485761)
-CONTEXT:  referenced column: varchar
-SQL function "to_char" statement 1
-referenced column: char_length
\ No newline at end of file
+ char_length 
+-------------
+    10485760
+(1 row)
+
+SELECT char_length(lpad('abcCC',1024*1024*11,'x')::varchar2(10485760));
+ char_length 
+-------------
+    10485760
+(1 row)
+
+SELECT char_length(lpad('abcCC',1024*1024*11,'x')::varchar(10485760));
+ char_length 
+-------------
+    10485760
+(1 row)
\ No newline at end of file

From 8e8d3bd43c9f0498df018ae5af4fdaa91d59694e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E9=B2=B2=E9=B9=8F?= <xukunpeng2@huawei.com>
Date: Thu, 10 Sep 2020 16:40:35 +0800
Subject: [PATCH 4/6] =?UTF-8?q?=E6=9B=B4=E6=96=B0=E6=B5=8B=E8=AF=95?=
 =?UTF-8?q?=E6=A0=B7=E4=BE=8B=E7=BB=93=E6=9E=9C=20=E5=A2=9E=E5=8A=A0?=
 =?UTF-8?q?=E9=AA=8C=E8=AF=81lpad=E5=87=BD=E6=95=B0=E5=AF=B9=E6=9C=80?=
 =?UTF-8?q?=E5=A4=A7=E5=AD=98=E5=82=A8=E7=A9=BA=E9=97=B4=E5=90=8C=E4=B8=BA?=
 =?UTF-8?q?10M=E7=9A=84=E5=AD=97=E7=AC=A6=E7=B1=BB=E5=9E=8B=E5=9C=A8?=
 =?UTF-8?q?=E8=B6=85=E8=BF=87=E5=AD=98=E5=82=A8=E4=B8=8A=E9=99=90=E6=97=B6?=
 =?UTF-8?q?=E7=9A=84=E5=A4=84=E7=90=86=E6=96=B9=E5=BC=8F=E4=B8=8D=E4=B8=80?=
 =?UTF-8?q?=E8=87=B4=E9=97=AE=E9=A2=98=E7=9A=84=E6=B5=8B=E8=AF=95=E6=A0=B7?=
 =?UTF-8?q?=E4=BE=8B=20=E7=94=B1=E4=BA=8E=E4=BF=AE=E6=94=B9=E4=BA=86varcha?=
 =?UTF-8?q?r.cpp=E4=B8=AD=E7=9A=84varchar=E5=87=BD=E6=95=B0=E5=AF=BC?=
 =?UTF-8?q?=E8=87=B4=E6=B5=8B=E8=AF=95=E6=A0=B7=E4=BE=8Bselect=20char=5Fle?=
 =?UTF-8?q?ngth(to=5Fchar(lpad('abc',=201024=20*=201024=20*10=20+=201,=20'?=
 =?UTF-8?q?x')));=E7=9A=84=E6=B5=8B=E8=AF=95=E7=BB=93=E6=9E=9C=E5=8F=91?=
 =?UTF-8?q?=E7=94=9F=E4=BA=86=E6=94=B9=E5=8F=98=EF=BC=8C=E5=9B=A0=E6=AD=A4?=
 =?UTF-8?q?=E4=B8=80=E5=B9=B6=E5=AF=B9=E5=85=B6=E8=BF=9B=E8=A1=8C=E4=BA=86?=
 =?UTF-8?q?=E4=B8=AA=E6=9B=B4=E6=96=B0=EF=BC=8C=20=E5=8D=B3=EF=BC=9A=20?=
 =?UTF-8?q?=E6=9B=B4=E6=96=B0select=20char=5Flength(to=5Fchar(lpad('abc',?=
 =?UTF-8?q?=201024=20*=201024=20*10=20+=201,=20'x')));=20=E6=B5=8B?=
 =?UTF-8?q?=E8=AF=95=E6=A0=B7=E4=BE=8B=E7=9A=84=E6=B5=8B=E8=AF=95=E7=BB=93?=
 =?UTF-8?q?=E6=9E=9C=EF=BC=8C=20=E5=A2=9E=E5=8A=A0SELECT=20char=5Flength(l?=
 =?UTF-8?q?pad('abcCC',1024*1024*11,'x')::varchar2(10485760));=20=E5=92=8C?=
 =?UTF-8?q?=20SELECT=20char=5Flength(lpad('abcCC',1024*1024*11,'x')::varch?=
 =?UTF-8?q?ar(10485760));=20=E6=B5=8B=E8=AF=95=E6=A0=B7=E4=BE=8B=E7=9A=84?=
 =?UTF-8?q?=E6=B5=8B=E8=AF=95=E7=BB=93=E6=9E=9C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/test/regress/expected/varchar.out | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/test/regress/expected/varchar.out b/src/test/regress/expected/varchar.out
index d41c007b6..832830e56 100644
--- a/src/test/regress/expected/varchar.out
+++ b/src/test/regress/expected/varchar.out
@@ -130,4 +130,4 @@ SELECT char_length(lpad('abcCC',1024*1024*11,'x')::varchar(10485760));
  char_length 
 -------------
     10485760
-(1 row)
\ No newline at end of file
+(1 row)

From 301ec61eaeffcd4c6129f51b8949f91928511497 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E9=B2=B2=E9=B9=8F?= <xukunpeng2@huawei.com>
Date: Thu, 10 Sep 2020 19:04:55 +0800
Subject: [PATCH 5/6] =?UTF-8?q?=E5=A2=9E=E5=8A=A0lpad=E5=87=BD=E6=95=B0?=
 =?UTF-8?q?=E5=AF=B9=E6=9C=80=E5=A4=A7=E5=AD=98=E5=82=A8=E7=A9=BA=E9=97=B4?=
 =?UTF-8?q?=E5=90=8C=E4=B8=BA10M=E7=9A=84=E5=AD=97=E7=AC=A6=E7=B1=BB?=
 =?UTF-8?q?=E5=9E=8B=E5=9C=A8=E8=B6=85=E8=BF=87=E5=AD=98=E5=82=A8=E4=B8=8A?=
 =?UTF-8?q?=E9=99=90=E6=97=B6=E7=9A=84=E5=A4=84=E7=90=86=E6=96=B9=E5=BC=8F?=
 =?UTF-8?q?=E4=B8=8D=E4=B8=80=E8=87=B4=E9=97=AE=E9=A2=98=E7=9A=84=E6=B5=8B?=
 =?UTF-8?q?=E8=AF=95=E6=A0=B7=E4=BE=8B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/test/regress/sql/varchar.sql | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/test/regress/sql/varchar.sql b/src/test/regress/sql/varchar.sql
index 9df4c133f..d5086e5df 100644
--- a/src/test/regress/sql/varchar.sql
+++ b/src/test/regress/sql/varchar.sql
@@ -71,4 +71,4 @@ select char_length(to_char(lpad('abc', 1024 * 1024 *10 + 1, 'x')));
 
 SELECT char_length(lpad('abcCC',1024*1024*11,'x')::varchar2(10485760));
 
-SELECT char_length(lpad('abcCC',1024*1024*11,'x')::varchar(10485760));
\ No newline at end of file
+SELECT char_length(lpad('abcCC',1024*1024*11,'x')::varchar(10485760));

From 563eb1a2a501ebc9b7cd660537b78c14b20c8c3d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E9=B2=B2=E9=B9=8F?= <xukunpeng2@huawei.com>
Date: Thu, 10 Sep 2020 19:05:30 +0800
Subject: [PATCH 6/6] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E9=AA=8C=E8=AF=81lpad?=
 =?UTF-8?q?=E5=87=BD=E6=95=B0=E5=AF=B9=E6=9C=80=E5=A4=A7=E5=AD=98=E5=82=A8?=
 =?UTF-8?q?=E7=A9=BA=E9=97=B4=E5=90=8C=E4=B8=BA10M=E7=9A=84=E5=AD=97?=
 =?UTF-8?q?=E7=AC=A6=E7=B1=BB=E5=9E=8B=E5=9C=A8=E8=B6=85=E8=BF=87=E5=AD=98?=
 =?UTF-8?q?=E5=82=A8=E4=B8=8A=E9=99=90=E6=97=B6=E7=9A=84=E5=A4=84=E7=90=86?=
 =?UTF-8?q?=E6=96=B9=E5=BC=8F=E4=B8=8D=E4=B8=80=E8=87=B4=E9=97=AE=E9=A2=98?=
 =?UTF-8?q?=E7=9A=84=E6=B5=8B=E8=AF=95=E6=A0=B7=E4=BE=8B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/test/regress/expected/varchar.out | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/test/regress/expected/varchar.out b/src/test/regress/expected/varchar.out
index 832830e56..defd64c67 100644
--- a/src/test/regress/expected/varchar.out
+++ b/src/test/regress/expected/varchar.out
@@ -131,3 +131,4 @@ SELECT char_length(lpad('abcCC',1024*1024*11,'x')::varchar(10485760));
 -------------
     10485760
 (1 row)
+