Re: "CASE" is not a variable

Keith Worthington wrote:

>Hi All,
>
>The following is a section of code inside an SQL function.   When I attempt to
>run it I get the error message '"CASE" is not a variable'.  If I split this into
>two queries (one for each variable) it works fine.  Obviously I have a work
>around but I would like to understand what I am doing wrong.  TIA
>
>SELECT tbl_item_bom.so_subline INTO v_so_subline,
>       CASE WHEN tbl_mesh.mesh_type = 'square' THEN
>                 ( CASE WHEN tbl_mesh.unit_of_measure = 'in' THEN          
>tbl_mesh.mesh_size
>                        WHEN tbl_mesh.unit_of_measure = 'ft' THEN 12.0    *
>tbl_mesh.mesh_size
>                        WHEN tbl_mesh.unit_of_measure = 'mm' THEN 25.4    *
>tbl_mesh.mesh_size
>                        WHEN tbl_mesh.unit_of_measure = 'cm' THEN  2.54   *
>tbl_mesh.mesh_size
>                        WHEN tbl_mesh.unit_of_measure = 'm'  THEN  0.0254 *
>tbl_mesh.mesh_size
>                        ELSE 0
>                   END
>                 )
>       WHEN tbl_mesh.mesh_type = 'diamond' THEN
>                 ( CASE WHEN tbl_mesh.unit_of_measure = 'in' THEN          
>tbl_mesh.mesh_size / 2.0
>                        WHEN tbl_mesh.unit_of_measure = 'ft' THEN 12.0    *
>tbl_mesh.mesh_size / 2.0
>                        WHEN tbl_mesh.unit_of_measure = 'mm' THEN 25.4    *
>tbl_mesh.mesh_size / 2.0
>                        WHEN tbl_mesh.unit_of_measure = 'cm' THEN  2.54   *
>tbl_mesh.mesh_size / 2.0
>                        WHEN tbl_mesh.unit_of_measure = 'm'  THEN  0.0254 *
>tbl_mesh.mesh_size / 2.0
>                        ELSE 0
>                   END
>                 )
>       ELSE 0
>       END INTO v_mesh_size
>  FROM sales_order.tbl_item_bom
>  LEFT JOIN peachtree.tbl_mesh
>    ON tbl_item_bom.item_id = tbl_mesh.item_id
> WHERE tbl_item_bom.so_number = rcrd_line.so_number
>   AND tbl_item_bom.so_line = rcrd_line.so_line
>   AND tbl_item_bom.component_type = 'net';
>
>Kind Regards,
>Keith
>
>---------------------------(end of broadcast)---------------------------
>TIP 9: In versions below 8.0, the planner will ignore your desire to
>       choose an index scan if your joining column's datatypes do not
>       match
>
>  
>
shouldn't your CASE construct be in the select list, i.e
SELECT tbl_item_bom_so.subline, CASE ... END INTO ... FROM ...WHERE ...
?
HTH
-- 
Patrick