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  1. MariaDB Server
  2. MDEV-278

SUBOPTIMIZED QUERY PLAIN

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Trivial
    • Resolution: Not a Bug
    • None
    • None
    • None
    • None
    • VERSION IS 5.2.4 - DOWNLOAD FROM MARIADB WEB SITE
      LINUX DISTRO = ARCHLINUX
      HARDWARE = DELL SERVER, X86_64

    Description

      Hi guys, i don't know if it's the right place to post it, but... if not tell me where to post, or not post...

      I have a server with mariadb (a bit old version 5.2.4) and it executed a bad plain in query, could you check why it's suboptimized?

      well it's a big table... i will post where to download data

      here is the query:
      (if i remove the FORCE INDEX, mariadb take about 2.6 seconds, with FORCE INDEX it's take about 0.09 seconds, without query cache hit)

      explain
      SELECT COUNT(*) FROM (
      	SELECT a.lote_tipo,a.lote_spa,IF(a.cur_oe=0,0,a.cur_oe || ';' || a.cur_oe_seq) AS oe,a.cliente_tipo,a.cliente_id,a.distribuidor_tipo,a.distribuidor_id,SUM(b.quantidade) AS quant,SUM(b.quant_lib) AS quant_lib,SUM(b.quant_rejeitado) AS quant_rejeitado,SUM(b.quant_oe) AS quant_oe,SUM(b.cur_oe_quant) AS quant_cur_oe,SUM(b.quant_embarcado) AS quant_emb,SUM(b.quant_producao) AS quant_op,SUM(b.cur_op_quant) AS quant_cur_op,SUM(b.producao_quant) AS quant_producao,SUM(b.quant_produzido) AS quant_produzido,a.sit_pcp,a.sit_spa,a.sit_logistica AS sit_oe,a.sit_nf,a.data_prevista_embarque,SUM(b.cur_oe_quant_emb) AS quant_cur_oe_emb,(
      		SELECT plano_conta_numero FROM cfop_itens WHERE plano_conta_id=a.cfop_id AND plano_conta_id_red=a.cfop_id_red) AS cfop_numero,a.saida_entrada,a.abate,a.orcamento_numero,a.compra_cancelada,a.data_digitacao 
      	FROM spamov AS a 
      #		FORCE KEY(spamov_data_digitacao)
      		,spamov_itens AS b 
      	WHERE 
      	a.unidade_id=b.unidade_id AND a.lote_tipo=b.lote_tipo AND 
      	a.lote_spa=b.lote_spa AND a.lote_estorno=0 AND 
      	a.unidade_id=1000 AND a.lote_spa>=0 AND 
      	a.lote_spa<=99999999999 AND a.cur_oe>=0 AND 
      	a.cur_oe<=99999999999  AND 
      	a.sit_spa='mov' AND a.sit_pcp!='mov' AND 
      	a.data_digitacao>='2012-05-01 03:00:00' AND 
      	a.data_digitacao<='2012-06-01 02:59:59' AND 
      	a.data_prevista_embarque>='2000-01-01 02:00:00' AND 
      	a.data_prevista_embarque<='2014-01-01 01:59:59' 
      	GROUP BY b.unidade_id,b.lote_tipo,b.lote_spa
      ) AS tmp_tbl;

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            Unassigned Unassigned
            rspadim roberto spadim
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            Dates

              Created:
              Updated:
              Resolved:

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