SELECT url_to, r404 FROM pod_redirect WHERE BINARY REPLACE(url_from,'/ru/','/') = '/konstruktory_dlya_malchikov/electronic-developing-constructor_sets-led-space-trains-stem.html' LIMIT 0,1 [0.00033402442932129 sec]
SELECT pod_filter.id,pod_filter.url FROM pod_filter WHERE BINARY pod_filter.url IN ('electronic','developing','constructor_sets','led','space','trains','stem') order by url [0.00088214874267578 sec]
SELECT pod_sub_icon.id,pod_sub_icon.url FROM pod_sub_icon WHERE BINARY pod_sub_icon.url IN ('electronic','developing','constructor_sets','led','space','trains','stem') order by url [0.00054311752319336 sec]
select id,url from pod_cat_brand where BINARY url IN ('electronic','developing','constructor_sets','led','space','trains','stem') [0.0011470317840576 sec]
SELECT id, url FROM pod_filter WHERE url IN ('electronic','developing','constructor_sets','led','space','trains','stem') [0.00047397613525391 sec]
SELECT id, url FROM pod_sub_icon WHERE url IN ('electronic','developing','constructor_sets','led','space','trains','stem') [0.00050091743469238 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_base_goods; CREATE TEMPORARY TABLE tmp_base_goods ( id INT NOT NULL PRIMARY KEY, brand_id INT, price DECIMAL(10,2), old_price DECIMAL(10,2), ordr INT, is_present TINYINT(1), sub_icon_id INT, fast_delivery TINYINT(1), is_new TINYINT(1), is_sale TINYINT(1), KEY idx_brand (brand_id) ) ENGINE=MEMORY [0.00035500526428223 sec]
INSERT INTO tmp_base_goods (id, brand_id, price, old_price, ordr, is_present, sub_icon_id, fast_delivery, is_new, is_sale) SELECT g.id, g.brand_id, g.price, g.old_price, g.ordr, g.is_present, g.sub_icon_id, g.fast_delivery, g.is_new, g.is_sale FROM pod_cat_good g WHERE g.cat_id IN (446) AND g.entry=0 AND g.is_active AND g.is_present_all_mods UNION SELECT g.id, g.brand_id, g.price, g.old_price, g.ordr, g.is_present, g.sub_icon_id, g.fast_delivery, g.is_new, g.is_sale FROM pod_cat_good g INNER JOIN pod_dop_cat_category dc ON dc.good_id = g.id WHERE dc.dop_cat_id IN (446) AND g.entry=0 AND g.is_active AND g.is_present_all_mods [0.27984189987183 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_sub_goods; CREATE TEMPORARY TABLE tmp_sub_goods ( id INT NOT NULL PRIMARY KEY, entry INT NOT NULL, price DECIMAL(10,2), old_price DECIMAL(10,2), sub_icon_id INT, is_present TINYINT(1), fast_delivery TINYINT(1), is_new TINYINT(1), is_sale TINYINT(1), KEY idx_entry (entry) ) ENGINE=MEMORY [0.00050592422485352 sec]
INSERT INTO tmp_sub_goods (id, entry, price, old_price, sub_icon_id, is_present, fast_delivery, is_new, is_sale) SELECT go.id, go.entry, go.price, go.old_price, go.sub_icon_id, go.is_present, go.fast_delivery, go.is_new, go.is_sale FROM pod_cat_good go INNER JOIN tmp_base_goods t ON go.entry = t.id WHERE go.is_active AND go.is_present [0.0009608268737793 sec]
SELECT g.id -- основні (tmp) FROM tmp_base_goods g INNER JOIN pod_good_filter gf0 ON g.id = gf0.id_good AND gf0.filter_id_value in (462,463,466,2223) INNER JOIN pod_good_filter gf1 ON g.id = gf1.id_good AND gf1.filter_id_value in (3452,3465) WHERE g.brand_id IN (2553,2615) AND 1 [0.0075058937072754 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9; CREATE TEMPORARY TABLE tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 ( id INT NOT NULL, PRIMARY KEY (id) ) ENGINE=MEMORY; [0.00017786026000977 sec]
INSERT INTO tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 (id) SELECT A.id FROM ( SELECT g.id -- основні (tmp) FROM tmp_base_goods g INNER JOIN pod_good_filter gf0 ON g.id = gf0.id_good AND gf0.filter_id_value in (462,463,466,2223) INNER JOIN pod_good_filter gf1 ON g.id = gf1.id_good AND gf1.filter_id_value in (3452,3465) WHERE g.brand_id IN (2553,2615) AND 1 ) A [0.00034999847412109 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9; CREATE TEMPORARY TABLE tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 ( goods_id INT NOT NULL, filter_id INT NOT NULL, PRIMARY KEY (goods_id, filter_id) ) ENGINE=MEMORY; [0.00014591217041016 sec]
INSERT INTO tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 (goods_id, filter_id) SELECT DISTINCT A.id AS goods_id, f.id AS filter_id FROM tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 A INNER JOIN pod_good_filter gf ON A.id = gf.id_good AND gf.filter_id_value NOT IN (462,463,466,2223,3452,3465) INNER JOIN pod_cat_filter cf ON gf.filter_id = cf.filter_id AND cf.category_id = 446 INNER JOIN pod_filter fm ON gf.filter_id = fm.id AND fm.is_split = 0 AND fm.is_active INNER JOIN pod_filter f ON gf.filter_id_value = f.id AND f.is_active [0.010142803192139 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9; CREATE TEMPORARY TABLE tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 ( filter_id INT NOT NULL PRIMARY KEY, count INT NOT NULL ) ENGINE=MEMORY; [0.00027203559875488 sec]
INSERT IGNORE INTO tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 (filter_id, count) SELECT p.filter_id, COUNT(*) AS count FROM tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 p GROUP BY p.filter_id [0.00036501884460449 sec]
SELECT c.filter_id, c.count, f.entry, f.name_ua AS name, f.url, f.ord, fm.name_ua AS mname, fm.url AS murl, fm.ord AS mord FROM tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 c INNER JOIN pod_filter f ON c.filter_id = f.id INNER JOIN pod_filter fm ON f.entry = fm.id ORDER BY fm.ord DESC, f.ord DESC, c.filter_id [0.0004420280456543 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 [0.00025701522827148 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 [0.00011491775512695 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922a1c9 [8.9883804321289E-5 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507; CREATE TEMPORARY TABLE tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 ( id INT NOT NULL, entry INT NOT NULL, PRIMARY KEY (id), KEY idx_entry (entry) ) ENGINE=MEMORY; [0.00012087821960449 sec]
INSERT INTO tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 (id, entry) SELECT A.id, A.entry FROM ( SELECT g.id as id, g.id as entry -- основні (tmp) FROM tmp_base_goods g INNER JOIN pod_good_filter gf0 ON g.id = gf0.id_good AND gf0.filter_id_value in (462,463,466,2223) INNER JOIN pod_good_filter gf1 ON g.id = gf1.id_good AND gf1.filter_id_value in (3452,3465) WHERE g.brand_id IN (2553,2615) AND g.is_present AND 1 UNION SELECT go.id as id, g.id as entry -- підтовари (tmp) FROM tmp_sub_goods go INNER JOIN tmp_base_goods g ON go.entry = g.id INNER JOIN pod_good_filter gf0 ON g.id = gf0.id_good AND gf0.filter_id_value in (462,463,466,2223) INNER JOIN pod_good_filter gf1 ON g.id = gf1.id_good AND gf1.filter_id_value in (3452,3465) WHERE g.brand_id IN (2553,2615) AND 1 ) A [0.00081086158752441 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507; CREATE TEMPORARY TABLE tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 ( goods_id INT NOT NULL, filter_id INT NOT NULL, PRIMARY KEY (goods_id, filter_id) ) ENGINE=MEMORY; [0.00018310546875 sec]
INSERT INTO tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 (goods_id, filter_id) SELECT DISTINCT A.entry AS goods_id, f.id AS filter_id FROM tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 A INNER JOIN pod_good_filter gf ON A.id = gf.id_good AND gf.filter_id_value NOT IN (462,463,466,2223,3452,3465) INNER JOIN pod_cat_filter cf ON gf.filter_id = cf.filter_id AND cf.category_id = 446 INNER JOIN pod_filter fm ON gf.filter_id = fm.id AND fm.is_split = 1 AND fm.is_active INNER JOIN pod_filter f ON gf.filter_id_value = f.id AND f.is_active [0.0011119842529297 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507; CREATE TEMPORARY TABLE tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 ( filter_id INT NOT NULL PRIMARY KEY, count INT NOT NULL ) ENGINE=MEMORY; [0.00019192695617676 sec]
INSERT IGNORE INTO tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 (filter_id, count) SELECT p.filter_id, COUNT(*) AS count FROM tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 p GROUP BY p.filter_id [0.00032210350036621 sec]
SELECT c.filter_id, c.count, f.entry, f.name_ua AS name, f.url, f.ord, fm.name_ua AS mname, fm.url AS murl, fm.ord AS mord FROM tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 c INNER JOIN pod_filter f ON c.filter_id = f.id INNER JOIN pod_filter fm ON f.entry = fm.id ORDER BY fm.ord DESC, f.ord DESC, c.filter_id [0.00023078918457031 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 [0.0002751350402832 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 [9.2983245849609E-5 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922d507 [8.702278137207E-5 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b; CREATE TEMPORARY TABLE tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b ( id INT NOT NULL, PRIMARY KEY (id) ) ENGINE=MEMORY; [0.00013494491577148 sec]
INSERT INTO tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b (id) SELECT A.id FROM ( SELECT g.id -- основні (tmp) FROM tmp_base_goods g INNER JOIN pod_good_filter gf0 ON g.id = gf0.id_good AND gf0.filter_id_value in (3452,3465) WHERE g.brand_id IN (2553,2615) AND 1 ) A [0.00028204917907715 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b; CREATE TEMPORARY TABLE tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b ( goods_id INT NOT NULL, filter_id INT NOT NULL, PRIMARY KEY (goods_id, filter_id) ) ENGINE=MEMORY; [0.00016212463378906 sec]
INSERT INTO tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b (goods_id, filter_id) SELECT DISTINCT A.id AS goods_id, f.id AS filter_id FROM tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b A INNER JOIN pod_good_filter gf ON A.id = gf.id_good AND gf.filter_id = 461 INNER JOIN pod_filter fm ON gf.filter_id = fm.id AND fm.is_split = 0 AND fm.is_active INNER JOIN pod_filter f ON gf.filter_id_value = f.id AND f.is_active [0.0014190673828125 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b; CREATE TEMPORARY TABLE tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b ( filter_id INT NOT NULL PRIMARY KEY, count INT NOT NULL ) ENGINE=MEMORY; [0.00032401084899902 sec]
INSERT INTO tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b (filter_id, count) SELECT p.filter_id, COUNT(*) AS count FROM tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b p GROUP BY p.filter_id [0.00029301643371582 sec]
INSERT IGNORE INTO tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b (filter_id, count) SELECT pf.id, 0 FROM pod_filter pf LEFT JOIN tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b c ON c.filter_id = pf.id WHERE pf.id in (462,463,466,2223) AND c.filter_id IS NULL [0.00030279159545898 sec]
SELECT c.filter_id, c.count, f.entry, f.name_ua AS name, f.url, f.ord, fm.name_ua AS mname, fm.url AS murl, fm.ord AS mord FROM tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b c INNER JOIN pod_filter f ON c.filter_id = f.id INNER JOIN pod_filter fm ON f.entry = fm.id ORDER BY fm.ord DESC, f.ord DESC, c.filter_id [0.00037717819213867 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b [0.00023889541625977 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b [0.00011014938354492 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922e71b [8.0108642578125E-5 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58; CREATE TEMPORARY TABLE tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 ( id INT NOT NULL, PRIMARY KEY (id) ) ENGINE=MEMORY; [0.00016903877258301 sec]
INSERT INTO tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 (id) SELECT A.id FROM ( SELECT g.id -- основні (tmp) FROM tmp_base_goods g INNER JOIN pod_good_filter gf0 ON g.id = gf0.id_good AND gf0.filter_id_value in (462,463,466,2223) WHERE g.brand_id IN (2553,2615) AND 1 ) A [0.00035381317138672 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58; CREATE TEMPORARY TABLE tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 ( goods_id INT NOT NULL, filter_id INT NOT NULL, PRIMARY KEY (goods_id, filter_id) ) ENGINE=MEMORY; [0.00019216537475586 sec]
INSERT INTO tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 (goods_id, filter_id) SELECT DISTINCT A.id AS goods_id, f.id AS filter_id FROM tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 A INNER JOIN pod_good_filter gf ON A.id = gf.id_good AND gf.filter_id = 3436 INNER JOIN pod_filter fm ON gf.filter_id = fm.id AND fm.is_split = 0 AND fm.is_active INNER JOIN pod_filter f ON gf.filter_id_value = f.id AND f.is_active [0.0012209415435791 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58; CREATE TEMPORARY TABLE tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 ( filter_id INT NOT NULL PRIMARY KEY, count INT NOT NULL ) ENGINE=MEMORY; [0.00035715103149414 sec]
INSERT INTO tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 (filter_id, count) SELECT p.filter_id, COUNT(*) AS count FROM tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 p GROUP BY p.filter_id [0.00032997131347656 sec]
INSERT IGNORE INTO tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 (filter_id, count) SELECT pf.id, 0 FROM pod_filter pf LEFT JOIN tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 c ON c.filter_id = pf.id WHERE pf.id in (3452,3465) AND c.filter_id IS NULL [0.00030708312988281 sec]
SELECT c.filter_id, c.count, f.entry, f.name_ua AS name, f.url, f.ord, fm.name_ua AS mname, fm.url AS murl, fm.ord AS mord FROM tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 c INNER JOIN pod_filter f ON c.filter_id = f.id INNER JOIN pod_filter fm ON f.entry = fm.id ORDER BY fm.ord DESC, f.ord DESC, c.filter_id [0.00041413307189941 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 [0.00021910667419434 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_pairs_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 [0.00023794174194336 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc922fa58 [0.00014209747314453 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc9230fcd; CREATE TEMPORARY TABLE tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc9230fcd ( entry INT NOT NULL, sub_icon_id INT NOT NULL, PRIMARY KEY (entry, sub_icon_id) ) ENGINE=MEMORY; [0.00029206275939941 sec]
INSERT IGNORE INTO tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc9230fcd (entry, sub_icon_id) SELECT DISTINCT A.entry, A.sub_icon_id FROM ( SELECT g.id as id, g.id as entry, g.sub_icon_id -- основні (tmp) FROM tmp_base_goods g INNER JOIN pod_good_filter gf0 ON g.id = gf0.id_good AND gf0.filter_id_value in (462,463,466,2223) INNER JOIN pod_good_filter gf1 ON g.id = gf1.id_good AND gf1.filter_id_value in (3452,3465) WHERE g.brand_id IN (2553,2615) AND g.is_present AND 1 UNION SELECT go.id as id, g.id as entry, go.sub_icon_id -- підтовари (tmp) FROM tmp_sub_goods go INNER JOIN tmp_base_goods g ON go.entry = g.id INNER JOIN pod_good_filter gf0 ON g.id = gf0.id_good AND gf0.filter_id_value in (462,463,466,2223) INNER JOIN pod_good_filter gf1 ON g.id = gf1.id_good AND gf1.filter_id_value in (3452,3465) WHERE g.brand_id IN (2553,2615) AND 1 ) A [0.00098800659179688 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc9230fcd; CREATE TEMPORARY TABLE tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc9230fcd ( sub_icon_id INT NOT NULL PRIMARY KEY, count INT NOT NULL ) ENGINE=MEMORY; [0.00034403800964355 sec]
INSERT IGNORE INTO tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc9230fcd (sub_icon_id, count) SELECT sub_icon_id, COUNT(DISTINCT entry) AS count FROM ( SELECT A.entry, A.sub_icon_id FROM tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc9230fcd A INNER JOIN pod_sub_icon si ON A.sub_icon_id = si.id AND si.is_active_filter = 1 ) AA GROUP BY sub_icon_id [0.00051712989807129 sec]
SELECT c.sub_icon_id AS id, c.count, si.entry, si.name_ua AS name, si.url FROM tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc9230fcd c INNER JOIN pod_sub_icon si ON c.sub_icon_id = si.id AND si.is_active_filter = 1 ORDER BY si.ordr, si.name [0.00018692016601562 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_A_g252ngvhi9rq070uiempn1c7ts_6a2adc9230fcd [0.00012111663818359 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_counts_g252ngvhi9rq070uiempn1c7ts_6a2adc9230fcd [5.9127807617188E-5 sec]
DROP TEMPORARY TABLE IF EXISTS tmp_base_goods; DROP TEMPORARY TABLE IF EXISTS tmp_sub_goods [0.00029492378234863 sec]
Низькі ціни на Конструктор для хлопчиків Led ... Stem (Лeд ... Стeм) - великий вибір, фото. Купити Конструктор для хлопчиків Led ... Stem (Лeд ... Стeм) в Києві і Україні

DEVELOPMENT🌷ЗНИЖКИ ДО 70%

ПЕРЕЙТИ

Конструктор для хлопчиків Led ... Stem