Re: Problem in dynamic query execution in plpgsql

Hai <span>Kretschmer</span> ,<br />   Thanks for your reply, it help to solve my problem. I have few for doubts
regardingdynamic query<br /><br />I have a  table  structure:<br /><br /> Column |       Type       | Modifiers<br
/>--------+------------------+-----------<br/>  mf     | double precision |<br /> sf     | double precision |<br
/> comm  | integer          |<br /><br />I create a  the following funtion <br /><br /><p style="margin-bottom:
0.2in;"><fontface="DejaVu Serif Condensed, serif"><font size="3">create or replace function test_perc() returns setof
recordas $body$</font></font><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed, serif"><font
size="3">declare</font></font><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed, serif"><font
size="3">vchr_queryVARCHAR(100);</font></font><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed,
serif"><fontsize="3">r record;</font></font><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed,
serif"><fontsize="3">begin</font></font><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed,
serif"><fontsize="3">--vchr_query:='SELECT mf,sf,comm,calc_perse(mf,sf,comm) as flt_claim from calc';</font></font><p
style="margin-bottom:0.2in;"><font face="DejaVu Serif Condensed, serif"><font size="3">vchr_query:= 'SELECT mf,sf,(mf –
mf* comm /100) – (sf – sf * comm/100) as flt_claim';</font></font><p style="margin-bottom: 0.2in;"><font face="DejaVu
SerifCondensed, serif"><font size="3">FOR r in EXECUTE vchr_query LOOP</font></font><p style="margin-bottom:
0.2in;"><fontface="DejaVu Serif Condensed, serif"><font size="3">RETURN NEXT r;</font></font><p style="margin-bottom:
0.2in;"><fontface="DejaVu Serif Condensed, serif"><font size="3">END LOOP;</font></font><p style="margin-bottom:
0.2in;"><fontface="DejaVu Serif Condensed, serif"><font size="3">RETURN;</font></font><p style="margin-bottom:
0.2in;"><fontface="DejaVu Serif Condensed, serif"><font size="3">end$body$<br />language 'plpgsql'</font></font><p
style="margin-bottom:0.2in;"><br /><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed, serif"><font
size="3">functioncreated</font></font><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed, serif"><font
size="3">butwhen I am traing to run this function I got the following error</font></font><p style="margin-bottom:
0.2in;">ERROR: syntax error at or near "–" at character 18<br /> QUERY:  SELECT mf,sf,(mf – mf * comm /100) – (sf – sf
*comm/100) as flt_claim<br />CONTEXT:  PL/pgSQL function "test_perc" line 7 at for over execute statement<br />LINE 1:
SELECTmf,sf,(mf – mf * comm /100) – (sf – sf * comm/100) as...<br /><br /><p style="margin-bottom: 0.2in;">How i can
solvethis ? <br /><p style="margin-bottom: 0.2in;"><br /><p style="margin-bottom: 0.2in;">I   tried  another   method  
tosolve  this  <br /><p style="margin-bottom: 0.2in;"> I create a function to calculate the value<p
style="margin-bottom:0.2in;"><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed, serif"><font
size="3">createor replace function calc_perse(double precision,double precision,double precision) returns double
precisionas $body$</font></font><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed, serif"><font
size="3">declare</font></font><pstyle="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed, serif"><font
size="3">resdouble precision ;</font></font><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed,
serif"><fontsize="3">begin</font></font><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif Condensed,
serif"><fontsize="3">res :=( $1 - $1* $3/100 )- ($2 - $2*$3/100); </font></font><p style="margin-bottom: 0.2in;"><font
face="DejaVuSerif Condensed, serif"><font size="3">return res;</font></font><p style="margin-bottom: 0.2in;"><font
face="DejaVuSerif Condensed, serif"><font size="3">end$body$</font></font><p style="margin-bottom: 0.2in;"><font
face="DejaVuSerif Condensed, serif"><font size="3">language 'plpgsql'</font></font><br /><p style="margin-bottom:
0.2in;">Theni try to call it from another function<p style="margin-bottom: 0.2in;"><p style="margin-bottom:
0.2in;"><fontface="DejaVu Serif Condensed, serif"><font size="3">vchr_query:='SELECT mf,sf,comm,calc_perse(mf,sf,comm)
asflt_claim from calc';</font></font><p style="margin-bottom: 0.2in;"><p style="margin-bottom: 0.2in;"><font
face="DejaVuSerif Condensed, serif"><font size="3">FOR r in EXECUTE vchr_query LOOP</font></font><p
style="margin-bottom:0.2in;"><font face="DejaVu Serif Condensed, serif"><font size="3">RETURN NEXT r;</font></font><p
style="margin-bottom:0.2in;"><font face="DejaVu Serif Condensed, serif"><font size="3">END LOOP;</font></font><p><p><p
style="margin-bottom:0.2in;">It also faild, How I can call a function like this from other function?<p
style="margin-bottom:0.2in;">thanks in advance<p style="margin-bottom: 0.2in;">Anoop G<br /><p style="margin-bottom:
0.2in;"><fontface="DejaVu Serif Condensed, serif"><font size="3"><br /></font></font><p><p style="margin-bottom:
0.2in;"><br/><p style="margin-bottom: 0.2in;"><br /><p style="margin-bottom: 0.2in;"><font face="DejaVu Serif
Condensed,serif"><font size="3"><br /></font></font><br /><br /> <br />