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POmySQL how to merge statements
 

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  1. POmySQL how to merge statements
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    <ol> <li>I have two statements</li> </ol> <p>a. </p> <pre><code>while (($row_1 = $STH_1 -&gt; fetch_assoc()) !== null){ $table_name = $row_1['table_name']; $stmts_1[] = sprintf(" SELECT * FROM $table_name WHERE date_time = $today_date "); } $stmt_1 = implode("\nUNION\n", $stmts_1); $stmt_1 .= "\nORDER BY date_time ASC"; $STH_5_2 = $DBH_R-&gt;query($stmt_1); while (($row_5_2 = $STH_5_2 -&gt; fetch_assoc()) !== null) { } </code></pre> <p>b. </p> <pre><code>$STH_e = $DBH_R-&gt;query(" SELECT * FROM $table_name_2 WHERE date_time = $today_date "); while (($row_e = $STH_e -&gt; fetch_assoc()) !== null) { } </code></pre> <ol> <li>the source colums for query 1 and query 2 are differents</li> <li>one column are similar -> date_time, but TIME(date_time) are different, DATE(date_time) will be the same</li> <li>all I must merge into one list (ORDER BY TIME(date_time) ASC) to make source for ticker script</li> </ol> <p>Q: how to merge this two statements? or maybe this two queries?</p> <p>//------------------------------------------------------------- update - create table statement</p> <ol> <li><p>table for query 1 - this type near 30 tables</p> <p>CREATE TABLE IF NOT EXISTS <code>v_c_ei_9001</code> (</p> <p><code>id</code> int(11) unsigned NOT NULL AUTO_INCREMENT,</p> <p><code>ei_code</code> int(10) NOT NULL DEFAULT '0',</p> <p><code>date_time</code> datetime NOT NULL DEFAULT '0000-00-00 00:00:00',</p> <p><code>index_year</code> varchar(10) NOT NULL DEFAULT 'ndnc',</p> <p><code>index_period</code> varchar(10) NOT NULL DEFAULT 'nd',</p> <p><code>index_period_2</code> varchar(10) NOT NULL DEFAULT 'nd',</p> <p><code>index_unit</code> varchar(10) NOT NULL DEFAULT 'nd',</p> <p><code>index_comment</code> text NOT NULL,</p> <p>PRIMARY KEY (<code>id</code>), KEY <code>date_time</code> (<code>date_time</code>) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=608 ;</p></li> <li><p>table for query 2 - this type is only one</p> <p>CREATE TABLE IF NOT EXISTS <code>v_c_e</code> (</p> <p><code>id</code> int(11) unsigned NOT NULL AUTO_INCREMENT,</p> <p><code>country_code</code> int(10) NOT NULL DEFAULT '0',</p> <p><code>country_name</code> varchar(50) NOT NULL DEFAULT 'ndnc',</p> <p><code>date_time</code> datetime NOT NULL DEFAULT '0000-00-00 00:00:00',</p> <p><code>event_title</code> varchar(100) NOT NULL DEFAULT 'ndnc',</p> <p><code>event_released</code> int(10) NOT NULL DEFAULT '0',</p> <p><code>event_comment</code> varchar(500) NOT NULL DEFAULT 'ndnc',</p> <p>PRIMARY KEY (<code>id</code>) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=168 ;</p></li> </ol> <p>brgs</p> <p>//--------------------------------------------------- UPDATE 2</p> <p>pre-query code // from all tables in the dbase we query only tables with names like v_c_ei_9xxx</p> <pre><code>$STH_1 = $DBH_R-&gt;query("SELECT table_name FROM information_schema.tables WHERE table_name LIKE 'v_c_ei\_9%' "); $stmts_1 = array(); while (($row_1 = $STH_1 -&gt; ..... // as above </code></pre>
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    1. USAndrew
    1. USAndrew
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    1. CO`$table_name = $row_1['table_name'];` indicates a BIG, BIG trouble.
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      1. USYour Common Sense
    2. COthe dbase table names are used in prequel query - the result is a collection of table_names's as source to first query (inside first while (){}) - and can you explain your comment? thnks
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      1. USAndrew
    3. COall is working ok but as 2 different queries, but how make it work together?
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      1. USAndrew
 

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