提取SQL中使用到的表
awk '{print tolower($0)}' tmpa|grep -E "from|join" |awk -F'from ' '{print $2}'|awk '{print $1}'|sort -u
awk '{print tolower($0)}' tmpa|grep -E "from|join" |awk -F'join ' '{print $2}'|awk '{print $1}'|sort -u
awk '{print tolower($0)}' tmpa|grep -E "from|join" |awk -F'from ' '{print $2}'|awk '{print $1}'|sort -u
awk '{print tolower($0)}' tmpa|grep -E "from|join" |awk -F'join ' '{print $2}'|awk '{print $1}'|sort -u
