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NAME="CATALOG-PG-TRANSFORM"
>50.48. <TT
CLASS="STRUCTNAME"
>pg_transform</TT
></A
></H1
><P
>   The catalog <TT
CLASS="STRUCTNAME"
>pg_transform</TT
> stores information about
   transforms, which are a mechanism to adapt data types to procedural
   languages.  See <A
HREF="sql-createtransform.html"
>CREATE TRANSFORM</A
> for more information.
  </P
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>Table 50-48. <TT
CLASS="STRUCTNAME"
>pg_transform</TT
> Columns</B
></P
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>Name</TH
><TH
>Type</TH
><TH
>References</TH
><TH
>Description</TH
></TR
></THEAD
><TBODY
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>trftype</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-type.html"
><TT
CLASS="STRUCTNAME"
>pg_type</TT
></A
>.oid</TT
></TD
><TD
>OID of the data type this transform is for</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>trflang</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
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><TT
CLASS="STRUCTNAME"
>pg_language</TT
></A
>.oid</TT
></TD
><TD
>OID of the language this transform is for</TD
></TR
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><TD
><TT
CLASS="STRUCTFIELD"
>trffromsql</TT
></TD
><TD
><TT
CLASS="TYPE"
>regproc</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
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><TT
CLASS="STRUCTNAME"
>pg_proc</TT
></A
>.oid</TT
></TD
><TD
>       The OID of the function to use when converting the data type for input
       to the procedural language (e.g., function parameters).  Zero is stored
       if this operation is not supported.
      </TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>trftosql</TT
></TD
><TD
><TT
CLASS="TYPE"
>regproc</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-proc.html"
><TT
CLASS="STRUCTNAME"
>pg_proc</TT
></A
>.oid</TT
></TD
><TD
>       The OID of the function to use when converting output from the
       procedural language (e.g., return values) to the data type.  Zero is
       stored if this operation is not supported.
      </TD
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