MySQLでマルチバイト文字を先頭からn『バイト』切り出すためのそびえ立つアレ - QiitaSELECT CASE WHEN LENGTH(multi_byte_string)>15 THEN CASE WHEN LENGTH(LEFT(multi_byte_string,15)) < 15 THEN LEFT(multi_byte_string,15) ELSE CASE WHEN LENGTH(LEFT(multi_byte_string,14)) < 15 THEN LEFT(multi_byte_string,14) ELSE CASE WHEN LENGTH(LEFT(multi_byte_string,13)) < 15 THEN LEFT(multi_byte_string,13) ELSE CASE WHEN LENGTH(LEFT(multi_byte_string,12)) < 15 THEN LEFT(multi_byte_string,12) ELSE C
