结合两个phpmysql查询

Question

I want to combine these two php mysql queries and want to get one resultset array. first query gives all members and postby related posts and second query gives all admin related posts with member_id is 0 and post_by with 0 and admin_id is not 0 and super_admin_post 0.

Database:
1) wall_post_master this my first database fields.
wp_id , wp_cat_id , wl_text , wp_img , datetime , displevel , mg_id , member_id , admin_id , family_id , post_by , photo_id , post_category , generation_id , visible_to , highlight , super_admin_post

2) admin_user_master this my second database fields.
user_id , family_id , first_name , last_name , password , email_id , user_level

Here my conditions to show wallpost data:
1)if mg_id exits with multiple member_id relates to comma.
2)if visible_to exits with multiple member_id relates to comma.
3)if member_id exits with current member_id.
4)if member_id exits in post_by.
5)if member_id is 0 and post_by is 0 and super_admin_post = 0 then i want to display as admin post.

First Query:

$grpsearch = "";
foreach ($arrseltran as $grpid) {
    $grpsearch .= " OR ( FIND_IN_SET('" . $grpid . "', wp.mg_id) AND displevel = 3)";
}
if($time == ""){ $time .= " WHERE"; }else{ $time .=" AND"; }
$time .= "
    wp.family_id = " . $_SESSION['logft']['family_id'] . " AND
    wp.post_category = 0 AND  
    ( 
        wp.member_id = " . $_SESSION['logft']['member_id'] . " OR 
        wp.post_by = " . $_SESSION['logft']['member_id'] . " OR 
        FIND_IN_SET('" . $_SESSION['logft']['member_id'] . "', wp.visible_to) " . $grpsearch . " OR 
        displevel = 1 
    )";

$timeline = "SELECT wp.*, 
wp.member_id, 
wp.datetime AS TimeSpent,
wp_cat.font_color,
photo.photo_path, 
mm.first_name,
mm.middle_name,
mm.last_name,
mm1.first_name AS to_first_name,
mm1.middle_name AS to_middle_name, 
mm1.last_name AS to_last_name
FROM wall_post_master wp 
INNER JOIN 
    wallpost_cat_master wp_cat ON wp_cat.wp_cat_id = wp.wp_cat_id
INNER JOIN 
    member_master mm ON mm.member_id = (CASE WHEN (wp.post_by = 0) THEN wp.member_id ELSE wp.post_by END)
INNER JOIN 
    member_master mm1 ON mm1.member_id = wp.member_id
LEFT JOIN 
    photo_master photo ON photo.photo_id = mm.photo_id
" . $time ." ORDER BY Timespent DESC";

Second Query:

$timeline1 = "SELECT wpa.*, 
wpa.family_id, 
wpa.datetime AS TimeSpent,
wp_cat.font_color,
wpa.wp_img,
c.family_id,
c.family_name,
c.editor_photo,
aum.first_name,
aum.last_name
FROM wall_post_master wpa 
INNER JOIN 
    wallpost_cat_master wp_cat ON wp_cat.wp_cat_id = wpa.wp_cat_id
INNER JOIN 
    config c ON c.family_id = wpa.family_id
INNER JOIN
    admin_user_master aum ON aum.family_id = wpa.family_id
where 
    aum.user_level = 1 and 
    wpa.admin_id <> 0 and 
    wpa.family_id='".$_SESSION['logft']['family_id']."' and 
    wpa.member_id=0 and 
    wpa.post_by=0  and 
    wpa.super_admin_post=0 
ORDER 
  BY Timespent DESC";

Answer 1

使用Join本身的概念

select a.col1,a.col2,b.col1,b.col3 from first_table as a, second_table as b where a.col1=condition and b.col1=condition

Answer 2

you can use mysqli function:

mysqli_multi_query()

or

mysqli::multi_query()

http://php.net/manual/en/mysqli.multi-query.php

full example from link:

<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$query  = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";

/* execute multi query */
if ($mysqli->multi_query($query)) {
    do {
        /* store first result set */
        if ($result = $mysqli->store_result()) {
            while ($row = $result->fetch_row()) {
                printf("%s\n", $row[0]);
            }
            $result->free();
        }
        /* print divider */
        if ($mysqli->more_results()) {
            printf("-----------------\n");
        }
    } while ($mysqli->next_result());
}

/* close connection */
$mysqli->close();
?>
Procedural style

<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$query  = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";

/* execute multi query */
if (mysqli_multi_query($link, $query)) {
    do {
        /* store first result set */
        if ($result = mysqli_store_result($link)) {
            while ($row = mysqli_fetch_row($result)) {
                printf("%s\n", $row[0]);
            }
            mysqli_free_result($result);
        }
        /* print divider */
        if (mysqli_more_results($link)) {
            printf("-----------------\n");
        }
    } while (mysqli_next_result($link));
}

/* close connection */
mysqli_close($link);
?>

Answer 3

if you match up the names of the fields selected in both queries you caan also use UNION

http://dev.mysql.com/doc/refman/5.0/en/union.html

http://www.mysqltutorial.org/sql-union-mysql.aspx