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>dblink_build_sql_insert</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN147775"
></A
><H2
>Name</H2
>dblink_build_sql_insert -- builds an INSERT statement using a local tuple, replacing the
primary key field values with alternative supplied values
</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN147778"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>dblink_build_sql_insert(text relname,
int2vector primary_key_attnums,
integer num_primary_key_atts,
text[] src_pk_att_vals_array,
text[] tgt_pk_att_vals_array) returns text</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN147780"
></A
><H2
>Description</H2
><P
> <CODE
CLASS="FUNCTION"
>dblink_build_sql_insert</CODE
> can be useful in doing selective
replication of a local table to a remote database. It selects a row
from the local table based on primary key, and then builds a SQL
<TT
CLASS="COMMAND"
>INSERT</TT
> command that will duplicate that row, but with
the primary key values replaced by the values in the last argument.
(To make an exact copy of the row, just specify the same values for
the last two arguments.)
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN147785"
></A
><H2
>Arguments</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><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"
>src_pk_att_vals_array</TT
></DT
><DD
><P
> Values of the primary key fields to be used to look up the
local tuple. Each field is represented in text form.
An error is thrown if there is no local row with these
primary key values.
</P
></DD
><DT
><TT
CLASS="PARAMETER"
>tgt_pk_att_vals_array</TT
></DT
><DD
><P
> Values of the primary key fields to be placed in the resulting
<TT
CLASS="COMMAND"
>INSERT</TT
> command. Each field is represented in text form.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN147818"
></A
><H2
>Return Value</H2
><P
>Returns the requested SQL statement as text.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN147821"
></A
><H2
>Notes</H2
><P
> As of <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> 9.0, the attribute numbers in
<TT
CLASS="PARAMETER"
>primary_key_attnums</TT
> are interpreted as logical
column numbers, corresponding to the column's position in
<TT
CLASS="LITERAL"
>SELECT * FROM relname</TT
>. Previous versions interpreted the
numbers as physical column positions. There is a difference if any
column(s) to the left of the indicated column have been dropped during
the lifetime of the table.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN147827"
></A
><H2
>Examples</H2
><PRE
CLASS="SCREEN"
>SELECT dblink_build_sql_insert('foo', '1 2', 2, '{"1", "a"}', '{"1", "b''a"}');
dblink_build_sql_insert
--------------------------------------------------
INSERT INTO foo(f1,f2,f3) VALUES('1','b''a','1')
(1 row)</PRE
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