Re: UNION syntax different for 7.1.2

See http://fts.postgresql.org/db/mw/msg.html?mid=1024361

You need to change your query slightly.

Regards,
Ed Loehr

Vilson farias wrote:
>
> Hello,
>
> from 7.0.2 to 7.0.3, the following script works fine, but in 7.1.2 I must remove the rr. from ORDER BY clause. This happens only when I have a UNION between the selects, if I try the order by rr.dtsolicitacao in both selects everything goes ok. I know you guys can suggest me to change this whole script to a single outer join, but I cant because my app still access some old 7.0.3 databases spread over all my country. The question is : Is it some kind of bug or I need to change all my scripts that uses UNION ?
>
> Best regards,
>
> José Vilson de Mello de Farias
> Dígitro Tecnologia Ltda - Brazil
>
> SELECT
> rr.*, rm.identificacao, rr.tipo_arquivo,
> ru.cod_operador, ru.cod_operador as nome,
> ru.flg_responsavel, ri.flg_estado as flg_estimp,
> ri.msg_erro as msg_erroimp
> FROM
> rel__relatorio rr, rel__modelo rm,
> rel__usuarios ru, rel__impressao ri
> WHERE
> rr.cod_cad_relatorio = 1 AND
> rr.cod_modelo = rm.cod_modelo AND
> rr.cod_cad_relatorio = ru.cod_cad_relatorio AND
> rr.cod_relatorio = ru.cod_relatorio AND
> ru.cod_cad_relatorio = ri.cod_cad_relatorio AND
> ru.cod_relatorio = ri.cod_relatorio AND
> ru.cod_operador = ri.cod_operador AND
> rr.cod_terminal = 'dgtac' AND
> ri.dtimpressao IS NULL AND ru.cod_operador = 'SYSADM'
> UNION ALL
> SELECT
> rr.*, rm.identificacao, rr.tipo_arquivo,
> ru.cod_operador, ru.cod_operador AS nome,
> ru.flg_responsavel, NULL, NULL
> FROM
> rel__relatorio rr, rel__modelo rm,
> rel__usuarios ru
> WHERE
> rr.cod_cad_relatorio = 1 AND
> rr.cod_modelo = rm.cod_modelo AND
> rr.cod_cad_relatorio = ru.cod_cad_relatorio AND
> rr.cod_relatorio = ru.cod_relatorio AND ru.cod_operador = 'SYSADM' AND
> rr.cod_terminal = 'dgtac' AND
> NOT EXISTS (SELECT * FROM rel__impressao ri WHERE
> ru.cod_cad_relatorio = ri.cod_cad_relatorio AND
> ru.cod_relatorio = ri.cod_relatorio AND
> ru.cod_operador = ri.cod_operador) AND ru.cod_operador = 'SYSADM'
>
> ORDER BY rr.dtsolicitacao
>
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