我不知道这是否是远程正确的。我有一个类,我想更新数据库,如果字段存在或插入,如果他们不。复杂的是,我正在做一个加入3桌(set_colors,school_art,baseimage)PHP MYSQL更新如果存在或插入,如果不是?
任何帮助将是非常好的。
以下是我有:提前
public function set_layer_colors($value) {
global $db;
$result_array = mysql_query("
IF EXISTS(SELECT * FROM set_colors WHERE school_art_id = '{$value}')
UPDATE set_colors (school_art_id, baseimage_id, sub_folder, layer)
SELECT school_art.id, baseimage.id, baseimage.sub_folder, baseimage.layer
FROM school_art
JOIN baseimage ON baseimage.base_folder = school_art.series_code
WHERE baseimage.image_type = 'B' ORDER BY school_art.id
ELSE
INSERT INTO set_colors (school_art_id, baseimage_id, sub_folder, layer)
SELECT school_art.id, baseimage.id, baseimage.sub_folder, baseimage.layer
FROM school_art
JOIN baseimage ON baseimage.base_folder = school_art.series_code
WHERE baseimage.image_type = 'B' ORDER BY school_art.id
");
return $result_array;
}
感谢。
为了更加正确,您不需要指示主键。因此,如果field1是密钥,那么 ...... 在重复密钥更新 field2 ='value2',field3 ='value3',...(以field2开头) – giacoder