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Mark factorial operator, and postfix operators in general, as deprecated.

Back-patch key parts of4c5cf54 and6ca547c into stable branches.I didn't touch pg_description entries here, so it's purely a docschange; and I didn't fool with any examples either. The main pointis so that anyone who's wondering if factorial() exists in the stablebranches will be reassured.Mark Dilger and John Naylor, with some adjustments by meDiscussion:https://postgr.es/m/BE2DF53D-251A-4E26-972F-930E523580E9@enterprisedb.com

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doc/src/sgml
- func.sgml
- ref
  - create_operator.sgml

2 files changed

+25

-3

lines changed

`‎doc/src/sgml/func.sgml`

Lines changed: 17 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -666,14 +666,16 @@`
`666`	`666`
`667`	`667`	`<row>`
`668`	`668`	`<entry> <literal>!</literal> </entry>`
`669`		`- <entry>factorial</entry>`
	`669`	`+ <entry>factorial`
	`670`	`+ (deprecated, use <function>factorial()</function> instead)</entry>`
`670`	`671`	`<entry><literal>5 !</literal></entry>`
`671`	`672`	`<entry><literal>120</literal></entry>`
`672`	`673`	`</row>`
`673`	`674`
`674`	`675`	`<row>`
`675`	`676`	`<entry> <literal>!!</literal> </entry>`
`676`		`- <entry>factorial (prefix operator)</entry>`
	`677`	`+ <entry>factorial as a prefix operator`
	`678`	`+ (deprecated, use <function>factorial()</function> instead)</entry>`
`677`	`679`	`<entry><literal>!! 5</literal></entry>`
`678`	`680`	`<entry><literal>120</literal></entry>`
`679`	`681`	`</row>`
`@@ -856,6 +858,19 @@`
`856`	`858`	`<entry><literal>2.71828182845905</literal></entry>`
`857`	`859`	`</row>`
`858`	`860`
	`861`	`+ <row>`
	`862`	`+ <entry>`
	`863`	`+ <indexterm>`
	`864`	`+ <primary>factorial</primary>`
	`865`	`+ </indexterm>`
	`866`	`+ <literal><function>factorial(<type>bigint</type>)</function></literal>`
	`867`	`+ </entry>`
	`868`	`+ <entry><type>numeric</type></entry>`
	`869`	`+ <entry>factorial</entry>`
	`870`	`+ <entry><literal>factorial(5)</literal></entry>`
	`871`	`+ <entry><literal>120</literal></entry>`
	`872`	`+ </row>`
	`873`	`+`
`859`	`874`	`<row>`
`860`	`875`	`<entry>`
`861`	`876`	`<indexterm>`

`‎doc/src/sgml/ref/create_operator.sgml`

Lines changed: 8 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -87,11 +87,18 @@ CREATE OPERATOR <replaceable>name</replaceable> (`
`87`	`87`
`88`	`88`	`<para>`
`89`	`89`	`At least one of <literal>LEFTARG</literal> and <literal>RIGHTARG</literal> must be defined. For`
`90`		`- binary operators, both must be defined. For rightunary`
	`90`	`+ binary operators, both must be defined. For right unary`
`91`	`91`	`operators, only <literal>LEFTARG</literal> should be defined, while for left`
`92`	`92`	`unary operators only <literal>RIGHTARG</literal> should be defined.`
`93`	`93`	`</para>`
`94`	`94`
	`95`	`+ <note>`
	`96`	`+ <para>`
	`97`	`+ Right unary, also called postfix, operators are deprecated and will be`
	`98`	`+ removed in <productname>PostgreSQL</productname> version 14.`
	`99`	`+ </para>`
	`100`	`+ </note>`
	`101`	`+`
`95`	`102`	`<para>`
`96`	`103`	`The <replaceable class="parameter">function_name</replaceable>`
`97`	`104`	`function must have been previously defined using <command>CREATE`

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Commit9dee85b

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`‎doc/src/sgml/func.sgml`

`‎doc/src/sgml/ref/create_operator.sgml`

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