sql - How optimized deprecated left outer join query on multiple column of more than two similar tables in postgres -


i have below query in oracle , need convert postgres . have created function table dynamicaly risk1,risk2, risk 3 subquery because have same contents except parameter . how can minimize code left outer join. because after creating function postgres gives error below error:-

error: not write tuplestore temporary file: no space left on device

oracle code :-

 select (select perimeter.description t_perimeter_nrvl perimeter perimeter.level_no  $p{levelno} , perimeter.perimeter_id =risk1.perimeter_id) per_name,     risk1.control_id,     risk1.name,     risk1.control_instr,     nvl(to_char(risk1.declaration_date,'dd/mm/yy'),' ')declaration_date,     risk1.risk_indicator indicator1,     risk2.risk_indicator indicator2,     risk3.risk_indicator indicator3,     risk4.risk_indicator indicator4,     risk5.risk_indicator indicator5                  (select ctrl.control_id,ctrlml.name,ctrlml.control_instr                 t_control_nrvl ctrl,t_riskindicator_nrvl risk,                             t_control_ml_nrvl ctrlml                                      , ctrlml.riskid =risk.riskid                     , ctrl.control_id=ctrlml.control_id , ctrlml.language_id=$p{languageid}                     , ctrl.control_type='ms'                      , decl.deadline >= $p{startdate}                     ,  decl.deadline <= $p{enddate}                                    , risk.indicator_id = 'r1') risk1,                      (select ctrl.control_id,ctrlml.name,ctrlml.control_instr                 t_control_nrvl ctrl,t_riskindicator_nrvl risk,                             t_control_ml_nrvl ctrlml                                      , ctrlml.riskid =risk.riskid                     , ctrl.control_id=ctrlml.control_id , ctrlml.language_id=$p{languageid}                     , ctrl.control_type='ms'                      , decl.deadline >= $p{startdate}                     ,  decl.deadline <= $p{enddate}                     , risk.indicator_id = 'r2') risk2,                      (select ctrl.control_id,ctrlml.name,ctrlml.control_instr                 t_control_nrvl ctrl,t_riskindicator_nrvl risk,                             t_control_ml_nrvl ctrlml                                      , ctrlml.riskid =risk.riskid                     , ctrl.control_id=ctrlml.control_id , ctrlml.language_id=$p{languageid}                     , ctrl.control_type='ms'                      , decl.deadline >= $p{startdate}                     ,  decl.deadline <= $p{enddate}                     , risk.indicator_id = 'r3') risk3             risk1.control_id = risk2.control_id(+)                 , risk1.control_id =risk3.control_id(+)                  , risk1.declaration_id = risk2.declaration_id(+)                 , risk1.declaration_id =risk3.declaration_id(+)                 , risk1.perimeter_id = risk2.perimeter_id(+)                 , risk1.perimeter_id =risk3.perimeter_id(+)         order risk1.control_id

i have written query in postgres runs gives error:-

select (select perimeter.description t_perimeter_nrvl perimeter perimeter.level_no  '001004002011' , perimeter.perimeter_id =risk1.perimeter_id) per_name, risk1.control_id, risk1.ctrlmlname, risk1.control_instr, coalesce(to_char(risk1.declaration_date,'dd/mm/yy'),' ')declaration_date, risk1.risk_indicator indicator1, risk2.risk_indicator indicator2, risk3.risk_indicator indicator3, risk4.risk_indicator indicator4, risk5.risk_indicator indicator5          (select * fn_getriskindicater('r1','001004002011','en','30-03-2015','30-06-2016')) risk1         left join                   (select * fn_getriskindicater('r2','001004002011','en','30-03-2015','30-06-2016')) risk2 on risk1.control_id = risk2.control_id              left join   (select * fn_getriskindicater('r3','001004002011','en','30-03-2015','30-06-2016')) risk3 on risk1.control_id =risk3.control_id             left join                   (select * fn_getriskindicater('r2','001004002011','en','30-03-2015','30-06-2016')) risk6 on  risk1.declaration_id = risk6.declaration_id left join                   (select * fn_getriskindicater('r3','001004002011','en','30-03-2015','30-06-2016')) risk8 on  risk1.declaration_id = risk8.declaration_id        left join                   (select * fn_getriskindicater('r2','001004002011','en','30-03-2015','30-06-2016')) risk11 on  risk1.perimeter_id = risk11.perimeter_id left join                   (select * fn_getriskindicater('r3','001004002011','en','30-03-2015','30-06-2016')) risk12 on risk1.perimeter_id = risk12.perimeter_id     order risk1.control_id


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