mysql - show all rows from left join -

-

i have query 

select if(viaturas.transportador null,        'sem transportador', viaturas.transportador) transportador,        sum(ifnull(retorno_euro,0))- sum(ifnull(devolucao_euro,0)) total_euro,        sum(ifnull(retorno_ddf,0))- sum(ifnull(devolucao_ddf,0)) total_ddf,        sum(ifnull(retorno_vadias_plast,0))- sum(ifnull(devolucao_vadias_plast,0)) total_plast transportes.transportation_order     left join transportes.viaturas on viaturas.viatura=transportation_order.viatura estado not in ('cancelado', 'eliminado')   , servico in ('distribuição', 'devolução', 're-entrega')   , data >= '2016-08-08' group lower(transportador);

but shows result matched rows. how can show "tranportador" rows when there no match between tables?

when left join, put right side table conditions in on clause true left join behavior. (when in where clause, you'll regular inner join result.)

select if(viaturas.transportador null,        'sem transportador', viaturas.transportador) transportador,        sum(ifnull(retorno_euro,0))- sum(ifnull(devolucao_euro,0)) total_euro,        sum(ifnull(retorno_ddf,0))- sum(ifnull(devolucao_ddf,0)) total_ddf,        sum(ifnull(retorno_vadias_plast,0))- sum(ifnull(devolucao_vadias_plast,0)) total_plast transportes.transportation_order     left join transportes.viaturas on viaturas.viatura=transportation_order.viatura   , estado not in ('cancelado', 'eliminado')   , servico in ('distribuição', 'devolução', 're-entrega')   , data >= '2016-08-08' group lower(transportador);

Comments

Post a Comment

Popular posts from this blog

Spring Boot + JPA + Hibernate: Unable to locate persister -

-
i trying work entity inside request method of spring boot application. entity in project , pom.xml has dependencies it. why error message?: org.hibernate.unknownentitytypeexception: unable locate persister: com.ric.bill.model.bs.par package com.ric.web; import java.util.concurrent.atomic.atomiclong; import javax.persistence.entitymanager; import javax.persistence.persistencecontext; import net.sf.ehcache.cachemanager; import net.sf.ehcache.management.cache; import net.sf.ehcache.management.cachestatistics; import org.hibernate.stat.statistics; import org.springframework.beans.factory.annotation.autowired; import org.springframework.boot.autoconfigure.domain.entityscan; import org.springframework.cache.annotation.enablecaching; import org.springframework.transaction.annotation.enabletransactionmanagement; import org.springframework.transaction.annotation.propagation; import org.springframework.transaction.annotation.transactional; import org.springframework.web.bind.annotati
Read more

go - Golang: panic: runtime error: invalid memory address or nil pointer dereference using bufio.Scanner -

-
i implementing go program uses bufio.scanner , bufio.writer have packaged code follows package main import ( "fmt" "player/command" "strings" ) func main() { //enter code here. read input stdin. print output stdout commands.scanner.scan() { //scan new line , send comand variable check command exist or not input := strings.split(strings.trim(commands.scanner.text(), " "), " ") command := input[0] if command == "" { fmt.printf("$ %s:", commands.pwd) continue } if !commands.commands[command] { commands.throwerror("cannot recognize input.") } else { commands.execute(command, input[1:], nil) } fmt.printf("$ %s:", commands.pwd) } } i using init.go file in main package follows package main import ( "flag" "player/sourc
Read more

c - double free or corruption (fasttop) -

-
this code reads null terminated string file (file containing null terminated strings & should provide index wanted string). error: *** error in `./main': double free or corruption (fasttop): 0x090a4a80 *** aborted code: char *tmp_realloc=null; char *sstring=null; int i=1; /*set file pointer point string*/ fseek(fh,index,seek_set); sstring=(char*)malloc(sizeof(char)); if(sstring == null) return null; tmp_realloc=sstring; while( (*(sstring+i-1)=(char)fgetc((file*)fh)) != 0x0 ) { /*reallocate more memory*/ tmp_realloc=(char*)realloc((char*)sstring,++i); /*if not same address copy old new & set old point new*/ if(tmp_realloc != sstring){ strcpy((char*)tmp_realloc,(char*)sstring); free(sstring); sstring=tmp_realloc; } } could tell me pointer causing issue (& reason) ? remove part /*if not same address copy old new & set old point new*/ if(tmp_realloc != sstring){ strc
Read more