Java 不兼容的类型不允许在JOOQ dsl中合并子查询
我尝试使用JOOQ以编程方式在java中构建以下查询:Java 不兼容的类型不允许在JOOQ dsl中合并子查询,java,spring-boot,jooq,Java,Spring Boot,Jooq,我尝试使用JOOQ以编程方式在java中构建以下查询: select emisor, anio, mes, sum(case when codigo = '01' then total else 0 end) as facturas, sum(case when codigo = '03' then total else 0 end) as boletas, sum(case when codigo = '07' then
select emisor,
anio,
mes,
sum(case when codigo = '01' then total else 0 end) as facturas,
sum(case when codigo = '03' then total else 0 end) as boletas,
sum(case when codigo = '07' then total else 0 end) as notas_credito,
sum(case when codigo = '08' then total else 0 end) as notas_debito,
sum(case when codigo = 'RC' then total else 0 end) as resumenes,
sum(case when codigo = 'RA' then total else 0 end) as anulaciones,
sum(case when codigo = '40' then total else 0 end) as percepciones,
sum(case when codigo = '20' then total else 0 end) as retenciones,
sum(case when codigo = 'RV' then total else 0 end) as reversiones,
sum(case when codigo = '09' then total else 0 end) as guias
from (select ruc_emisor as emisor,
year(fec_registro) as anio,
month(fec_registro) as mes,
substring(nom_solicitud, 13, 2) as codigo,
count(*) as total
from bd_ose.tx_solicitud
where year(fec_registro) = '2019'
and month(fec_registro) = 7
group by ruc_emisor, anio, mes, codigo
UNION
select num_ruc as emisor,
year(fec_registro) as anio,
month(fec_registro) as mes,
cod_cpe as codigo,
count(*) as total
from bd_ose.tx_comprobante_inf
where year(fec_registro) = '2019'
and month(fec_registro) = 7
group by num_ruc, anio, mes, codigo
) solicitudes
group by emisor, anio, mes
order by emisor;
在SQL和JOOQ方面,我仍然相当缺乏经验,但我决定从内部着手,找到出路。当我尝试将.union()方法应用于两个内部子查询时,出现了问题。我的IDE强调了一个类型错配错误,指出union需要一个类型为“org.jooq.Select的参数。这里的问题是,您将一些变量声明为类型为
Field
,因此Java编译器不认为这两个Select
对象是兼容的。因此:
Field ciemissor=txComprobanteInf.NUM_RUC.as(“emissor”);
字段CIcodigo=txComprobanteInf.COD_CPE.as(“codigo”);
您应该使用适当的泛型类型参数声明这两个变量
Field ciemissor=txComprobanteInf.NUM_RUC.as(“emissor”);
字段CIcodigo=txComprobanteInf.COD_CPE.as(“codigo”);
其他两个变量也是如此。(我注意到,对于变量Semisor
,您需要去掉dslContext。选择(
初始值设定项中的一部分。我假设这与您所做的测试有关。)
我认为这个改变应该解决你的问题
package pe.net.tci.osereporterservice;
import org.jooq.*;
import org.jooq.impl.DSL;
import org.springframework.stereotype.Repository;
import pe.net.tci.osereporterservice.jooq.tables.TxComprobanteInf;
import pe.net.tci.osereporterservice.jooq.tables.TxSolicitud;
import java.util.List;
@Repository
public class ReportDAO {
private final DSLContext dslContext;
TxComprobanteInf txComprobanteInf = TxComprobanteInf.TX_COMPROBANTE_INF;
TxSolicitud txSolicitud = TxSolicitud.TX_SOLICITUD;
public ReportDAO(DSLContext dslContext) {
this.dslContext = dslContext;
}
public List<ReportEntry> produceReport() {
Field<Integer> CIanio = DSL.year(txComprobanteInf.FEC_REGISTRO).as("anio");
Field<Integer> CImes = DSL.month(txComprobanteInf.FEC_REGISTRO).as("mes");
Field<?> CIemisor = txComprobanteInf.NUM_RUC.as("emisor");
Field<?> CIcodigo = txComprobanteInf.COD_CPE.as("codigo");
Field<Integer> Sanio = DSL.year(txSolicitud.FEC_REGISTRO).as("anio");
Field<Integer> Smes = DSL.month(txSolicitud.FEC_REGISTRO).as("mes");
Field<?> Semisor = dslContext.select(txSolicitud.RUC_EMISOR.as("emisor");
Field<?> Scodigo = DSL.substring(txSolicitud.NOM_SOLICITUD, 13, 2).as("codigo");
dslContext.select(
Semisor,
Sanio,
Smes,
Scodigo,
DSL.count().as("total")
).from(txSolicitud)
.where(
(DSL.year(txComprobanteInf.FEC_REGISTRO).eq(2019))
.and(DSL.month(txComprobanteInf.FEC_REGISTRO).eq(7))
).union(
dslContext.select(
CIemisor,
CIanio,
CImes,
CIcodigo,
DSL.count().as("total")
).from(txComprobanteInf)
.where(
(CIanio.eq(2019))
.and(CImes.eq(7))
).groupBy(CIemisor, CIanio, CImes, CIcodigo))
//...more code
}
}