Sophie: postgresql8.4-docs-8.4.12-0.1mdv2010.2 i586

postgresql8.4-docs-8.4.12-0.1mdv2010.2.i586.rpm

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>dblink_build_sql_delete</H1
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><A
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><H2
>Name</H2
>dblink_build_sql_delete&nbsp;--&nbsp;builds a DELETE statement using supplied values for primary
    key field values
   </DIV
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><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>    dblink_build_sql_delete(text relname,
                            int2vector primary_key_attnums,
                            int2 num_primary_key_atts,
                            text[] tgt_pk_att_vals_array) returns text
   </PRE
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><H2
>Description</H2
><P
>    <CODE
CLASS="FUNCTION"
>dblink_build_sql_delete</CODE
> can be useful in doing selective
    replication of a local table to a remote database.  It builds a SQL
    <TT
CLASS="COMMAND"
>DELETE</TT
> command that will delete the row with the given
    primary key values.
   </P
></DIV
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><H2
>Arguments</H2
><P
></P
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><DL
><DT
><TT
CLASS="PARAMETER"
>relname</TT
></DT
><DD
><P
>       Name of a local relation, for example <TT
CLASS="LITERAL"
>foo</TT
> or
       <TT
CLASS="LITERAL"
>myschema.mytab</TT
>.  Include double quotes if the
       name is mixed-case or contains special characters, for
       example <TT
CLASS="LITERAL"
>"FooBar"</TT
>; without quotes, the string
       will be folded to lower case.
      </P
></DD
><DT
><TT
CLASS="PARAMETER"
>primary_key_attnums</TT
></DT
><DD
><P
>       Attribute numbers (1-based) of the primary key fields,
       for example <TT
CLASS="LITERAL"
>1 2</TT
>.
      </P
></DD
><DT
><TT
CLASS="PARAMETER"
>num_primary_key_atts</TT
></DT
><DD
><P
>       The number of primary key fields.
      </P
></DD
><DT
><TT
CLASS="PARAMETER"
>tgt_pk_att_vals_array</TT
></DT
><DD
><P
>       Values of the primary key fields to be used in the resulting
       <TT
CLASS="COMMAND"
>DELETE</TT
> command.  Each field is represented in text form.
      </P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN115498"
></A
><H2
>Return Value</H2
><P
>Returns the requested SQL statement as text.</P
></DIV
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><A
NAME="AEN115501"
></A
><H2
>Example</H2
><PRE
CLASS="PROGRAMLISTING"
> test=# select dblink_build_sql_delete('"MyFoo"', '1 2', 2, '{"1", "b"}');
            dblink_build_sql_delete
 ---------------------------------------------
  DELETE FROM "MyFoo" WHERE f1='1' AND f2='b'
 (1 row)
   </PRE
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