使用uniapp制作录音功能（VUE3）

hive-去字符串前导0

• leading:去掉字段串前的0
• TRAILING:去掉字段串后的0
• BOTH:去掉字段串前后的0
  0的数量可以是不确定个数，也可以用这种方法去掉某些字符前缀后缀

SELECT  a,
        trim(
            leading '0'
            FROM    a
        ) AS c1,
        trim(
            BOTH '0'
            FROM    a
        ) AS c2,
        trim(
            TRAILING '0'
            FROM    a
        ) AS c3
FROM    (
            SELECT  '010100100' AS a
            UNION ALL
            SELECT  '10100100' AS a
            UNION ALL
            SELECT  '0000010100100' AS a
            UNION ALL
            SELECT  '00000a0100100' AS a
        ) t

输出结果

a	            c1	        c2	    c3
00000a0100100	a0100100	a01001	00000a01001
0000010100100	10100100	101001	00000101001
010100100	    10100100	101001	0101001
10100100	    10100100	101001	101001