04 2018 档案

摘要：1.判断是否是数字 regexp_Like select * from (select 'abc' s1 from dual union all select '789456' s1 from dualunion all select '8907a7' s1 from dualunion all s 阅读全文

摘要：cat > t1.sh chmod 777 t1.sh ./t1.sh 1 101 #!/bin/sh #测试输入参数 2个 vA=$1 vB=$2 if [ "${vA}" = "1" ] #中括号里面的字符一定有空格分隔 then #then一定是另外起一行 echo "vA=1 vB=${vB 阅读全文