<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >transforms</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.6.4 Documentation" HREF="index.html"><LINK REL="UP" TITLE="The Information Schema" HREF="information-schema.html"><LINK REL="PREVIOUS" TITLE="tables" HREF="infoschema-tables.html"><LINK REL="NEXT" TITLE="triggered_update_columns" HREF="infoschema-triggered-update-columns.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2017-08-11T02:27:18"></HEAD ><BODY CLASS="SECT1" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="4" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.6.4 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="tables" HREF="infoschema-tables.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="information-schema.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Chapter 35. The Information Schema</TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="triggered_update_columns" HREF="infoschema-triggered-update-columns.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="INFOSCHEMA-TRANSFORMS" >35.53. <TT CLASS="LITERAL" >transforms</TT ></A ></H1 ><P > The view <TT CLASS="LITERAL" >transforms</TT > contains information about the transforms defined in the current database. More precisely, it contains a row for each function contained in a transform (the <SPAN CLASS="QUOTE" >"from SQL"</SPAN > or <SPAN CLASS="QUOTE" >"to SQL"</SPAN > function). </P ><DIV CLASS="TABLE" ><A NAME="AEN58418" ></A ><P ><B >Table 35-51. <TT CLASS="LITERAL" >transforms</TT > Columns</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Data Type</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD ><TT CLASS="LITERAL" >udt_catalog</TT ></TD ><TD ><TT CLASS="TYPE" >sql_identifier</TT ></TD ><TD >Name of the database that contains the type the transform is for (always the current database)</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >udt_schema</TT ></TD ><TD ><TT CLASS="TYPE" >sql_identifier</TT ></TD ><TD >Name of the schema that contains the type the transform is for</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >udt_name</TT ></TD ><TD ><TT CLASS="TYPE" >sql_identifier</TT ></TD ><TD >Name of the type the transform is for</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >specific_catalog</TT ></TD ><TD ><TT CLASS="LITERAL" >sql_identifier</TT ></TD ><TD >Name of the database containing the function (always the current database)</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >specific_schema</TT ></TD ><TD ><TT CLASS="LITERAL" >sql_identifier</TT ></TD ><TD >Name of the schema containing the function</TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >specific_name</TT ></TD ><TD ><TT CLASS="LITERAL" >sql_identifier</TT ></TD ><TD > The <SPAN CLASS="QUOTE" >"specific name"</SPAN > of the function. See <A HREF="infoschema-routines.html" >Section 35.40</A > for more information. </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >group_name</TT ></TD ><TD ><TT CLASS="LITERAL" >sql_identifier</TT ></TD ><TD > The SQL standard allows defining transforms in <SPAN CLASS="QUOTE" >"groups"</SPAN >, and selecting a group at run time. PostgreSQL does not support this. Instead, transforms are specific to a language. As a compromise, this field contains the language the transform is for. </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >transform_type</TT ></TD ><TD ><TT CLASS="TYPE" >character_data</TT ></TD ><TD > <TT CLASS="LITERAL" >FROM SQL</TT > or <TT CLASS="LITERAL" >TO SQL</TT > </TD ></TR ></TBODY ></TABLE ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="infoschema-tables.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="infoschema-triggered-update-columns.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><TT CLASS="LITERAL" >tables</TT ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="information-schema.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><TT CLASS="LITERAL" >triggered_update_columns</TT ></TD ></TR ></TABLE ></DIV ></BODY ></HTML >