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我有一個HTML搜索表單這就好比是波紋管圖像：如何從MySQL數據庫加載數據更快？
在此搜索表單我需要搜索數據從7個表。在這7個表格中，存儲了超過11K個數據。因此，我正在使用以下sql JOIN查詢來獲得結果。
但是，如果對於例如結果（例如顯示錯誤消息），則需要很長的時間才能得到結果。我搜索姓氏= s。我的意思是如果表格列中有大量數據。如何解決這個問題？我使用了LIMIT，但我認爲它在這個查詢中沒有幫助，因爲首先我必須搜索所有7個表！
SQL查詢：
$getSearch .= " cd.cdid, cd.family_name, cd.given_name, cd.department, cd.title, company.cid, company.company_name, users.nickname, contact_label.label_data FROM
contact_details as cd
LEFT JOIN users ON users.user_id = cd.user_id
LEFT JOIN company ON company.cid = cd.cid
LEFT JOIN contact_docs ON contact_docs.cdid = cd.cdid
LEFT JOIN userkeywords ON userkeywords . cdid = cd . cdid
LEFT JOIN keywords ON keywords . kid = userkeywords . kid
LEFT JOIN contact_label ON contact_label.cdid = cd.cdid
WHERE 1=1 ";
if(!empty($ad_company)){
$getSearch .= "AND company.company_name LIKE '$ad_company%' ";
}
if(!empty($ad_fname)){
$getSearch .= "AND cd.family_name LIKE '$ad_fname%' ";
}
if(!empty($ad_department)){
$getSearch .= "AND cd.department LIKE '$ad_department%' ";
}
if(!empty($ad_mp)){
$getSearch .= "AND cd.mp >= '$ad_mp' ";
}
if(!empty($ad_e2)){
$getSearch .= "AND cd.e2 >= '$ad_e2' ";
}
if(!empty($ad_pl)){
$getSearch .= "AND cd.pl >= '$ad_pl' ";
}
if(!empty($ad_ap)){
$getSearch .= "AND cd.ap >= '$ad_ap' ";
}
if(!empty($ad_j2)){
$getSearch .= "AND cd.j2 >= '$ad_j2' ";
}
if(!empty($ad_agreater)){
$getSearch .= "AND cd.age >= '$ad_agreater' ";
}
if(!empty($ad_aless)){
$getSearch .= "AND cd.age <= '$ad_aless' ";
}
if(!empty($ad_agreater) && !empty($ad_aless)){
$getSearch .= "AND cd.age BETWEEN '$ad_agreater' AND '$ad_aless'";
}
if(!empty($ad_sgreater)){
$getSearch .= "AND cd.comp >= '$ad_sgreater' ";
}
if(!empty($ad_sless)){
$getSearch .= "AND cd.comp <= '$ad_sless' ";
}
if(!empty($ad_sgreater) && !empty($ad_sless)){
$getSearch .= "AND cd.comp BETWEEN '$ad_sgreater' AND '$ad_sless'";
}
if(!empty($ad_noteterm)){
$ad_noteterm = preg_replace("/\{ASUSIBBIR\}(.+?)\s:\s(.+?)\{ASUSIBBIR\}/m", "$2", $ad_noteterm);
$getSearch .= "AND LOCATE('$ad_noteterm', REPLACE (notesUpdate, '{ASUSIBBIR}', ' '))";
}
if(!empty($ad_cnote)){
$getSearch .= "AND LOCATE('$ad_cnote', cd.characterNotes)";
}
if(!empty($ad_twork)){
$getSearch .= "AND contact_label.label_data LIKE '%$ad_twork%'";
}
if(!empty($ad_tmobile)){
$getSearch .= "AND cd.mobile_phone like '%$ad_tmobile%'";
}
if(!empty($ad_resume)){
$getSearch .= "AND LOCATE('$ad_resume', contact_docs.file_content)"; //is this the resume? yes
}
if(!empty($ad_datefrom) && empty($ad_dateto)){
$getSearch .= "AND cd.created_date BETWEEN '$ad_datefrom'AND '$date'";
}
if(!empty($ad_dateto) && empty($ad_datefrom)){
$getSearch .= "AND cd.created_date BETWEEN date('0000-00-00') AND '$ad_dateto' ";
}
if(!empty($ad_datefrom) && !empty($ad_dateto)){
$getSearch .= "AND cd.created_date BETWEEN '$ad_datefrom' AND '$ad_dateto'";
}
if(!empty($ad_type)){
$getSearch .= "AND cd.type = '$ad_type' ";
}
if(!empty($ad_wemail)){
$getSearch .= "AND cd.email LIKE '$ad_wemail%'";
}
if(!empty($ad_pemail)){
$getSearch .= "AND cd.email_private LIKE '$ad_pemail%'";
}
if(!empty($ad_title)){
$getSearch .= "AND cd.title LIKE '$ad_title%'";
}
if(!empty($ad_source)){
$getSearch .= "AND cd.source LIKE '$ad_source%'";
}
if(!empty($ad_consultant)){
$getSearch .= "AND users.nickname LIKE '%$ad_consultant%'";
}
if(!empty($ad_keyword)){
$ad_keyword_param = str_replace(",","','",$ad_keyword);
$getSearch .= " AND keywords.keywordName IN ('$ad_keyword_param') ";
}
$getSearch .= " GROUP BY cd.user_id, cd.cid, cd.cdid ";
if(!empty($ad_keyword)){
$ad_keyword_param = str_replace(",",",",$ad_keyword);
$getSearch .= ") as a WHERE keywordName LIKE '$ad_keyword_param%' ";
}
$f = microtime(true);
//$getSearch .= "ORDER BY cd.given_name ASC";
$getSearch .= "ORDER BY cd.given_name DESC LIMIT 10";
$getSearch = mysqli_query($link, $getSearch);
你真的需要規範化你的數據庫。 –
是的，我想是的，但你有什麼想法嗎？ –
另外你爲什麼使用'where 1 = 1'？ –