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authorTom Lane <tgl@sss.pgh.pa.us>2013-03-28 23:14:58 -0400
committerTom Lane <tgl@sss.pgh.pa.us>2013-03-28 23:14:58 -0400
commitd2b8d060c4f8d9154113312f6f2628298e6aff59 (patch)
tree571214ee711617ec067ac352095bbf35f6b06ae4 /doc/src
parent723acc99bef562cf536d38d0a1967f24e9b4ede0 (diff)
Document encode(bytea, 'escape')'s behavior correctly.
I changed this in commit fd15dba543247eb1ce879d22632b9fdb4c230831, but missed the fact that the SGML documentation of the function specified exactly what it did. Well, one of the two places where it's specified documented that --- probably I looked at the other place and thought nothing needed to be done. Sync the two places where encode() and decode() are described.
Diffstat (limited to 'doc/src')
-rw-r--r--doc/src/sgml/func.sgml20
1 files changed, 12 insertions, 8 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 7d39b272f06..4309cbf520d 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -1505,7 +1505,8 @@
<entry>
Encode binary data into a textual representation. Supported
formats are: <literal>base64</>, <literal>hex</>, <literal>escape</>.
- <literal>escape</> merely outputs null bytes as <literal>\000</> and
+ <literal>escape</> converts zero bytes and high-bit-set bytes to
+ octal sequences (<literal>\</><replaceable>nnn</>) and
doubles backslashes.
</entry>
<entry><literal>encode(E'123\\000\\001', 'base64')</literal></entry>
@@ -3020,12 +3021,12 @@
<primary>decode</primary>
</indexterm>
<literal><function>decode(<parameter>string</parameter> <type>text</type>,
- <parameter>type</parameter> <type>text</type>)</function></literal>
+ <parameter>format</parameter> <type>text</type>)</function></literal>
</entry>
<entry><type>bytea</type></entry>
<entry>
- Decode binary string from <parameter>string</parameter> previously
- encoded with <function>encode</>. Parameter type is same as in <function>encode</>.
+ Decode binary data from textual representation in <parameter>string</>.
+ Options for <parameter>format</> are same as in <function>encode</>.
</entry>
<entry><literal>decode(E'123\\000456', 'escape')</literal></entry>
<entry><literal>123\000456</literal></entry>
@@ -3036,13 +3037,16 @@
<indexterm>
<primary>encode</primary>
</indexterm>
- <literal><function>encode(<parameter>string</parameter> <type>bytea</type>,
- <parameter>type</parameter> <type>text</type>)</function></literal>
+ <literal><function>encode(<parameter>data</parameter> <type>bytea</type>,
+ <parameter>format</parameter> <type>text</type>)</function></literal>
</entry>
<entry><type>text</type></entry>
<entry>
- Encode binary string to <acronym>ASCII</acronym>-only representation. Supported
- types are: <literal>base64</>, <literal>hex</>, <literal>escape</>.
+ Encode binary data into a textual representation. Supported
+ formats are: <literal>base64</>, <literal>hex</>, <literal>escape</>.
+ <literal>escape</> converts zero bytes and high-bit-set bytes to
+ octal sequences (<literal>\</><replaceable>nnn</>) and
+ doubles backslashes.
</entry>
<entry><literal>encode(E'123\\000456'::bytea, 'escape')</literal></entry>
<entry><literal>123\000456</literal></entry>