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>TYPE</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN46379"
></A
><H2
>Name</H2
>TYPE -- define a new data type</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN46382"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>TYPE <TT
CLASS="REPLACEABLE"
><I
>type_name</I
></TT
> IS <TT
CLASS="REPLACEABLE"
><I
>ctype</I
></TT
></PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN46386"
></A
><H2
>Description</H2
><P
> The <TT
CLASS="COMMAND"
>TYPE</TT
> command defines a new C type. It is
equivalent to putting a <TT
CLASS="LITERAL"
>typedef</TT
> into a declare
section.
</P
><P
> This command is only recognized when <TT
CLASS="COMMAND"
>ecpg</TT
> is
run with the <TT
CLASS="OPTION"
>-c</TT
> option.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN46394"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="REPLACEABLE"
><I
>type_name</I
></TT
></DT
><DD
><P
> The name for the new type. It must be a valid C type name.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>ctype</I
></TT
></DT
><DD
><P
> A C type specification.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN46407"
></A
><H2
>Examples</H2
><PRE
CLASS="PROGRAMLISTING"
>EXEC SQL TYPE customer IS
struct
{
varchar name[50];
int phone;
};
EXEC SQL TYPE cust_ind IS
struct ind
{
short name_ind;
short phone_ind;
};
EXEC SQL TYPE c IS char reference;
EXEC SQL TYPE ind IS union { int integer; short smallint; };
EXEC SQL TYPE intarray IS int[AMOUNT];
EXEC SQL TYPE str IS varchar[BUFFERSIZ];
EXEC SQL TYPE string IS char[11];</PRE
><P
> Here is an example program that uses <TT
CLASS="COMMAND"
>EXEC SQL
TYPE</TT
>:
</P><PRE
CLASS="PROGRAMLISTING"
>EXEC SQL WHENEVER SQLERROR SQLPRINT;
EXEC SQL TYPE tt IS
struct
{
varchar v[256];
int i;
};
EXEC SQL TYPE tt_ind IS
struct ind {
short v_ind;
short i_ind;
};
int
main(void)
{
EXEC SQL BEGIN DECLARE SECTION;
tt t;
tt_ind t_ind;
EXEC SQL END DECLARE SECTION;
EXEC SQL CONNECT TO testdb AS con1;
EXEC SQL SELECT current_database(), 256 INTO :t:t_ind LIMIT 1;
printf("t.v = %s\n", t.v.arr);
printf("t.i = %d\n", t.i);
printf("t_ind.v_ind = %d\n", t_ind.v_ind);
printf("t_ind.i_ind = %d\n", t_ind.i_ind);
EXEC SQL DISCONNECT con1;
return 0;
}</PRE
><P>
The output from this program looks like this:
</P><PRE
CLASS="SCREEN"
>t.v = testdb
t.i = 256
t_ind.v_ind = 0
t_ind.i_ind = 0</PRE
><P>
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN46414"
></A
><H2
>Compatibility</H2
><P
> The <TT
CLASS="COMMAND"
>TYPE</TT
> command is a PostgreSQL extension.
</P
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