Subject: [PATCH v1] doc: Enhance "PostgreSQL Character Sets" table.

From: Tatsuo Ishii <[email-masked]>
Date: Sat, 14 Feb 2026 16:26:01 +0900

Previously some of encoding lacked description of coded character sets
being used in the encoding. For most of European encoding this is
obvious because there's only or few character sets for encoding, but
it's not true for some Asian encodings. For example, EUC_JP encoding
corresponds to multiple character sets: Namely, JIS X 0201, JIS X 0208
and JIS X 0212. This commit adds the information to "Description"
column.

Discussion: https://postgr.es/m/20260211.185847.1679085676298121526.ishii%40postgresql.org
---
 doc/src/sgml/charset.sgml | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/doc/src/sgml/charset.sgml b/doc/src/sgml/charset.sgml
index 3aabc798012..32c6280489b 100644
--- a/doc/src/sgml/charset.sgml
+++ b/doc/src/sgml/charset.sgml
@@ -1831,7 +1831,7 @@ ORDER BY c COLLATE ebcdic;
         </row>
         <row>
          <entry><literal>EUC_CN</literal></entry>
-         <entry>Extended UNIX Code-CN</entry>
+         <entry>Extended UNIX Code-CN, GB 2312</entry>
          <entry>Simplified Chinese</entry>
          <entry>Yes</entry>
          <entry>Yes</entry>
@@ -1840,7 +1840,7 @@ ORDER BY c COLLATE ebcdic;
         </row>
         <row>
          <entry><literal>EUC_JP</literal></entry>
-         <entry>Extended UNIX Code-JP</entry>
+         <entry>Extended UNIX Code-JP, JIS X 0201, JIS X 0208, JIS X 0212</entry>
          <entry>Japanese</entry>
          <entry>Yes</entry>
          <entry>Yes</entry>
@@ -1849,7 +1849,7 @@ ORDER BY c COLLATE ebcdic;
         </row>
         <row>
          <entry><literal>EUC_JIS_2004</literal></entry>
-         <entry>Extended UNIX Code-JP, JIS X 0213</entry>
+         <entry>Extended UNIX Code-JP, JIS X 0201, JIS X 0213</entry>
          <entry>Japanese</entry>
          <entry>Yes</entry>
          <entry>No</entry>
@@ -1858,7 +1858,7 @@ ORDER BY c COLLATE ebcdic;
         </row>
         <row>
          <entry><literal>EUC_KR</literal></entry>
-         <entry>Extended UNIX Code-KR</entry>
+         <entry>Extended UNIX Code-KR, KS X 1001</entry>
          <entry>Korean</entry>
          <entry>Yes</entry>
          <entry>Yes</entry>
@@ -1867,7 +1867,7 @@ ORDER BY c COLLATE ebcdic;
         </row>
         <row>
          <entry><literal>EUC_TW</literal></entry>
-         <entry>Extended UNIX Code-TW</entry>
+         <entry>Extended UNIX Code-TW, CNS 11643</entry>
          <entry>Traditional Chinese, Taiwanese</entry>
          <entry>Yes</entry>
          <entry>Yes</entry>
@@ -2056,7 +2056,7 @@ ORDER BY c COLLATE ebcdic;
         </row>
         <row>
          <entry><literal>SJIS</literal></entry>
-         <entry>Shift JIS</entry>
+         <entry>Shift JIS, JIS X 0201, JIS X 0208</entry>
          <entry>Japanese</entry>
          <entry>No</entry>
          <entry>No</entry>
-- 
2.43.0

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