Question

我最近几天厌倦了APEX，我试图在application express中运行一个交互式报告，似乎无法使用我在sql查询中声明的变量。下面是错误，我还包括有效的代码。 get_longlat（）函数经过测试，可以返回SDO_GEOMETRY数据类型。

ORA-06550：第7行，第12栏：PLS-00306：错误的数字或类型调用'||'时的参数ORA-06550：第7行，第1列：PL / SQL：声明被忽略

DECLARE
l_query VARCHAR2(4096);
l_location SDO_GEOMETRY := get_longlat(v('P2_POSTCODE'));
BEGIN

l_query := '
                SELECT
                "VENUE_ID",
                "VENUE_NAME",
                "CITY",
                "VENUE_NO",
                "POSTCODE",
                dbms_lob.getlength("THUMBNAIL") "THUMBNAIL",
                "DESCRIPTION",
                SDO_GEOM.SDO_DISTANCE(G_LOCATION, '  || l_location || ',0.005,''unit=mile'') "G_LOCATION"                
                FROM   "GAMEVENUE"
                WHERE (SDO_WITHIN_DISTANCE(G_LOCATION,' || l_location || ',''distance=250 unit=mile'') = ''TRUE'');';

RETURN l_query;

这有效

l_query := '
                SELECT
                "VENUE_ID",
                "VENUE_NAME",
                "CITY",
                "VENUE_NO",
                "POSTCODE",
                dbms_lob.getlength("THUMBNAIL") "THUMBNAIL",
                "DESCRIPTION",
                SDO_GEOM.SDO_DISTANCE(G_LOCATION, MDSYS.SDO_GEOMETRY(2001,4326,SDO_POINT_TYPE(-4.1530439,50.371089,NULL),NULL,NULL),0.005,''unit=mile'') "G_LOCATION"                
                FROM   "GAMEVENUE"
                WHERE (SDO_WITHIN_DISTANCE(G_LOCATION,SDO_GEOMETRY(2001,4326,SDO_POINT_TYPE(-4.1530439,50.371089,null),null,null),''distance=250 unit=mile'') = ''TRUE'')';

Answer 1

由于SDO_GEOMETRY不是char或number类型（隐含地显示为char），因此您无法直接使用它。试试这个：

l_query := '
                SELECT
                "VENUE_ID",
                "VENUE_NAME",
                "CITY",
                "VENUE_NO",
                "POSTCODE",
                dbms_lob.getlength("THUMBNAIL") "THUMBNAIL",
                "DESCRIPTION",
                SDO_GEOM.SDO_DISTANCE(G_LOCATION, MDSYS.SDO_GEOMETRY('||l_sdo_gtype||','||l_sdo_srid||',MDSYS.SDO_POINT_TYPE('||l_longitude||','||l_latitude||',NULL),NULL,NULL),0.005,''unit=mile'') "G_LOCATION"                
                FROM   "GAMEVENUE"
                WHERE (SDO_WITHIN_DISTANCE(G_LOCATION,SDO_GEOMETRY('||l_sdo_gtype||','||l_sdo_srid||',SDO_POINT_TYPE('||l_longitude||','||l_latitude||',null),null,null),''distance=250 unit=mile'') = ''TRUE'')';

l_sdo_gtype，l_sdo_srid，l_longitude，l_latitude的类型编号;

plsql不能在sql select中使用变量

1 个答案: