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Diffstat (limited to 'doc/src/sgml/man7/DROP_CAST.7')
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diff --git a/doc/src/sgml/man7/DROP_CAST.7 b/doc/src/sgml/man7/DROP_CAST.7 new file mode 100644 index 0000000..7a7985d --- /dev/null +++ b/doc/src/sgml/man7/DROP_CAST.7 @@ -0,0 +1,88 @@ +'\" t +.\" Title: DROP CAST +.\" Author: The PostgreSQL Global Development Group +.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> +.\" Date: 2023 +.\" Manual: PostgreSQL 15.5 Documentation +.\" Source: PostgreSQL 15.5 +.\" Language: English +.\" +.TH "DROP CAST" "7" "2023" "PostgreSQL 15.5" "PostgreSQL 15.5 Documentation" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +DROP_CAST \- remove a cast +.SH "SYNOPSIS" +.sp +.nf +DROP CAST [ IF EXISTS ] (\fIsource_type\fR AS \fItarget_type\fR) [ CASCADE | RESTRICT ] +.fi +.SH "DESCRIPTION" +.PP +\fBDROP CAST\fR +removes a previously defined cast\&. +.PP +To be able to drop a cast, you must own the source or the target data type\&. These are the same privileges that are required to create a cast\&. +.SH "PARAMETERS" +.PP +IF EXISTS +.RS 4 +Do not throw an error if the cast does not exist\&. A notice is issued in this case\&. +.RE +.PP +\fIsource_type\fR +.RS 4 +The name of the source data type of the cast\&. +.RE +.PP +\fItarget_type\fR +.RS 4 +The name of the target data type of the cast\&. +.RE +.PP +CASCADE +.br +RESTRICT +.RS 4 +These key words do not have any effect, since there are no dependencies on casts\&. +.RE +.SH "EXAMPLES" +.PP +To drop the cast from type +text +to type +int: +.sp +.if n \{\ +.RS 4 +.\} +.nf +DROP CAST (text AS int); +.fi +.if n \{\ +.RE +.\} +.SH "COMPATIBILITY" +.PP +The +\fBDROP CAST\fR +command conforms to the SQL standard\&. +.SH "SEE ALSO" +CREATE CAST (\fBCREATE_CAST\fR(7)) |