Question

有谁知道如何解决Postgres中的以下错误？

错误：值超出范围：下溢语境：PL / pgSQL函数   pgnumerics.poisspdf（双精度，双精度）第1行   赋值PL / pgSQL函数pgnumerics.poisscdf（double   精度，双精度）第1行在任务   **********错误**********

错误：值超出范围：下溢SQL状态：22003上下文：   PL / pgSQL函数pgnumerics.poisspdf（双精度，双精度   精度）第1行在赋值PL / pgSQL函数   pgnumerics.poisscdf（双精度，双精度）第1行at   分配

pgnumerics.poisscdf（dp，dp）函数一直工作到我的数据的第5300行。我无法确定导致下溢的原因。

pgnumerics.poisscdf((qoh ),(add  * replen_days ))

这是poisscdf（）

的代码

-- Function: pgnumerics.poisscdf(double precision, double precision)

-- DROP FUNCTION pgnumerics.poisscdf(double precision, double precision);

CREATE OR REPLACE FUNCTION pgnumerics.poisscdf(
    x double precision,
    lambda double precision)
  RETURNS double precision AS
$BODY$ DECLARE y double precision;
 i integer;BEGIN y:=0.0;FOR i IN 0..X LOOP y:=y+pgnumerics.poisspdf(i,LAMBDA);END LOOP;RETURN y;END;$BODY$
  LANGUAGE plpgsql VOLATILE

此函数调用：pgnumerics.poisspdf（） - 功能：pgnumerics.poisspdf（双精度，双精度）

- DROP FUNCTION pgnumerics.poisspdf（双精度，双精度）;

CREATE OR REPLACE FUNCTION pgnumerics.poisspdf(
    x double precision,
    lambda double precision)
  RETURNS double precision AS
$BODY$ DECLARE y double precision;BEGIN y:=exp(-LAMBDA+X*ln(LAMBDA)-pgnumerics.gammaln(X+
1.0));RETURN y;END;$BODY$
  LANGUAGE plpgsql VOLATILE
  COST 100;

哪个叫pgnumerics.gammaln（）

-- Function: pgnumerics.gammaln(double precision)

-- DROP FUNCTION pgnumerics.gammaln(double precision);

CREATE OR REPLACE FUNCTION pgnumerics.gammaln(x double precision)
  RETURNS double precision AS
$BODY$ DECLARE y double precision;xnum double precision;xden double precision;xm1 double precision;r double precision;xx double precision;i int;
BEGIN xnum:=0.0;xden:=1.0;y:=x;if x<=(1E-10) then y:=-1.0*ln(x);elsif x<=0.5 then xnum:=xnum*y+4.945235359296727046734888e0;xnum:=xnum*y+2.018112620856775083915565e2;xnum:=xnum*y+2.290838373831346393026739e3;xnum:=xnum*y+1.131967205903380828685045e4;xnum:=xnum*y+2.855724635671635335736389e4;xnum:=xnum*y+3.848496228443793359990269e4;xnum:=xnum*y+2.637748787624195437963534e4;xnum:=xnum*y+7.225813979700288197698961e3;xden:=xden*y+6.748212550303777196073036e1;xden:=xden*y+1.113332393857199323513008e3;xden:=xden*y+7.738757056935398733233834e3;xden:=xden*y+2.763987074403340708898585e4;xden:=xden*y+5.499310206226157329794414e4;xden:=xden*y+6.161122180066002127833352e4;xden:=xden*y+3.635127591501940507276287e4;xden:=xden*y+8.785536302431013170870835e3;y:=-ln(y)+(y*(-5.772156649015328605195174e-1+y*(xnum/xden)));elsif x<=0.6796875 then xm1:=(x-0.5)-0.5;xnum:=xnum*xm1+4.974607845568932035012064e0;xnum:=xnum*xm1+5.424138599891070494101986e2;xnum:=xnum*xm1+1.550693864978364947665077e4;xnum:=xnum 
*xm1+1.847932904445632425417223e5;xnum:=xnum*xm1+1.088204769468828767498470e6;xnum:=xnum*xm1+3.338152967987029735917223e6;xnum:=xnum*xm1+5.106661678927352456275255e6;xnum:=xnum*xm1+3.074109054850539556250927e6;xden:=xden*xm1+1.830328399370592604055942e2;xden:=xden*xm1+7.765049321445005871323047e3;xden:=xden*xm1+1.331903827966074194402448e5;xden:=xden*xm1+1.136705821321969608938755e6;xden:=xden*xm1+5.267964117437946917577538e6;xden:=xden*xm1+1.346701454311101692290052e7;xden:=xden*xm1+1.782736530353274213975932e7;xden:=xden*xm1+9.533095591844353613395747e6;y:=-ln(y)+(xm1*(4.227843350984671393993777e-1+xm1*(xnum/xden)));elsif x<=1.5 then xm1:=(x-0.5)-0.5;xnum:=xnum*xm1+4.945235359296727046734888e0;xnum:=xnum*xm1+2.018112620856775083915565e2;xnum:=xnum*xm1+2.290838373831346393026739e3;xnum:=xnum*xm1+1.131967205903380828685045e4;xnum:=xnum*xm1+2.855724635671635335736389e4;xnum:=xnum*xm1+3.848496228443793359990269e4;xnum:=xnum*xm1+2.637748787624195437963534e4;xnum:=xnum*xm1+
7.225813979700288197698961e3;xden:=xden*xm1+6.748212550303777196073036e1;xden:=xden*xm1+1.113332393857199323513008e3;xden:=xden*xm1+7.738757056935398733233834e3;xden:=xden*xm1+2.763987074403340708898585e4;xden:=xden*xm1+5.499310206226157329794414e4;xden:=xden*xm1+6.161122180066002127833352e4;xden:=xden*xm1+3.635127591501940507276287e4;xden:=xden*xm1+8.785536302431013170870835e3;y:=xm1*(-5.772156649015328605195174e-1+xm1*(xnum/xden));elsif x<=4.0 then xm1:=x-2.0;xnum:=xnum*xm1+4.974607845568932035012064e0;xnum:=xnum*xm1+5.424138599891070494101986e2;xnum:=xnum*xm1+1.550693864978364947665077e4;xnum:=xnum*xm1+1.847932904445632425417223e5;xnum:=xnum*xm1+1.088204769468828767498470e6;xnum:=xnum*xm1+3.338152967987029735917223e6;xnum:=xnum*xm1+5.106661678927352456275255e6;xnum:=xnum*xm1+3.074109054850539556250927e6;xden:=xden*xm1+1.830328399370592604055942e2;xden:=xden*xm1+7.765049321445005871323047e3;xden:=xden*xm1+1.331903827966074194402448e5;xden:=xden*xm1+1.136705821321969608938755e6;xden 
:=xden*xm1+5.267964117437946917577538e6;xden:=xden*xm1+1.346701454311101692290052e7;xden:=xden*xm1+1.782736530353274213975932e7;xden:=xden*xm1+9.533095591844353613395747e6;y:=xm1*(4.227843350984671393993777e-1+xm1*(xnum/xden));elsif x<=12.0 then xm1:=x-4.0;xden:=-1.0;xnum:=xnum*xm1+1.474502166059939948905062e4;xnum:=xnum*xm1+2.426813369486704502836312e6;xnum:=xnum*xm1+1.214755574045093227939592e8;xnum:=xnum*xm1+2.663432449630976949898078e9;xnum:=xnum*xm1+2.940378956634553899906876e10;xnum:=xnum*xm1+1.702665737765398868392998e11;xnum:=xnum*xm1+4.926125793377430887588120e11;xnum:=xnum*xm1+5.606251856223951465078242e11;xden:=xden*xm1+2.690530175870899333379843e3;xden:=xden*xm1+6.393885654300092398984238e5;xden:=xden*xm1+4.135599930241388052042842e7;xden:=xden*xm1+1.120872109616147941376570e9;xden:=xden*xm1+1.488613728678813811542398e10;xden:=xden*xm1+1.016803586272438228077304e11;xden:=xden*xm1+3.417476345507377132798597e11;xden:=xden*xm1+4.463158187419713286462081e11;y:=
1.791759469228055000094023e0+xm1*(xnum/xden);else r:=5.7083835261e-03;xm1:=ln(y);xx:=x*x;r:=r/xx-1.910444077728e-03;r:=r/xx+8.4171387781295e-04;r:=r/xx-5.952379913043012e-04;r:=r/xx+7.93650793500350248e-04;r:=r/xx-2.777777777777681622553e-03;r:=r/xx+8.333333333333333331554247e-02;r:=r/y;y:=r+0.9189385332046727417803297-0.5*xm1+y*(xm1-1);end if;return y;END;$BODY$
  LANGUAGE plpgsql VOLATILE
  COST 100;

首先出错的行是此数据输入：

Select pgnumerics.poisscdf(242, (0.0153846153846154 + 10))

感谢任何帮助！

Answer 1

要解决此错误，我使用正态分布模型来计算x值。这让我进入Poisson分布的球场，消除了下溢问题。这种情况允许寻求目标。如果您需要使用真实数据，解决方案将无效。我通过其他几种方式操纵输入;但是，这似乎是这种情况下最可持续的方法。

计算正态分布的x值：

  X = Round((Avg_demand) + (Stddev * Service_factor)) as normal_distribution_target_qty

错误：超出范围的值：下溢

1 个答案: