最近开发需要写存储过程，但是一个表的字段如果多的话，那就是苦力活，所以写了这个存储过程来自动生成表的字段、变量定义、变量赋初始值等，就让博友们见识一下shell处理字符串的威力吧！
如果你是DBA你看到我这个脚本一定会喜欢
db=$1
tab=$2
user=$3
passwd=$4
db=zj_ihouse
tab=zj_broker_info
user=root
passwd='abc@123'
mysql -u$user -p$passwd -e "desc $db.$tab" > $db.$tab.tab
cat $db.$tab.tab | grep -v 'Field' | awk -F ' ' '{print "declare v_"$1" "$2";"}' > $db.$tab.txt
echo '' >> $db.$tab.txt
echo '' >> $db.$tab.txt
cat $db.$tab.tab | grep -v 'Field' | grep -v 'Field' | awk -F ' ' '{print "v_"$1"="$2","}' | sed "s/varchar(.*)/\'\'/g" | sed "s/char(.*)/\'\'/g" | sed "s/int(.*)/0/g" | sed "s/datetime/\'0000-01-01 00:00:00\'/g" | sed "s/mediumtext/\'\'/g" | sed "s/double/0.0/g" | tr -d "\n" | awk -F, '{for(i=1;i<=NF;i++){printf (i%5==0)?$i",\n":$i","}}' | sed "s/,,/,/g" >> $db.$tab.txt
echo '' >> $db.$tab.txt
echo '' >> $db.$tab.txt
cat $db.$tab.tab | grep -v 'Field' | awk -F ' ' '{print "`"$1"`,"}' | tr -d "\n" | awk -F, '{for(i=1;i<=NF;i++){printf (i%5==0)?$i",\n":$i","}}' | sed "s/,,/,/g" >> $db.$tab.txt
echo '' >> $db.$tab.txt
echo '' >> $db.$tab.txt
cat $db.$tab.tab | grep -v 'Field' | awk -F ' ' '{print "v_"$1","}' | tr -d "\n" | awk -F, '{for(i=1;i<=NF;i++){printf (i%5==0)?$i",\n":$i","}}' | sed "s/,,/,/g" >> $db.$tab.txt
echo '' >> $db.$tab.txt
echo '' >> $db.$tab.txt
cat $db.$tab.tab | grep -v 'Field' | awk -F ' ' '{print "`"$1"`=v_"$1","}' | tr -d "\n" | awk -F, '{for(i=1;i<=NF;i++){printf (i%5==0)?$i",\n":$i","}}' | sed "s/,,/,/g" >> $db.$tab.txt
rm -rf $db.$tab.tab
生成的效果:
declare v_id varchar(255); declare v_create_date datetime; declare v_del_flag varchar(1); declare v_remarks varchar(255); declare v_update_date datetime; declare v_address varchar(255); declare v_area_id varchar(255); declare v_area_name varchar(255); declare v_borough_alias varchar(255); declare v_borough_area double; declare v_borough_avgprice double; declare v_borough_bank varchar(255); declare v_borough_bus varchar(255); declare v_borough_company varchar(255); declare v_borough_completion varchar(255); declare v_borough_content varchar(255); declare v_borough_costs double; declare v_borough_developer varchar(255); declare v_borough_dining varchar(255); declare v_borough_green double; declare v_borough_hospital varchar(255); declare v_borough_letter varchar(255); declare v_borough_name varchar(255); declare v_borough_number varchar(255); declare v_borough_parking varchar(255); declare v_borough_properties varchar(255); declare v_borough_shop varchar(255); declare v_borough_sight varchar(255); declare v_borough_support varchar(255); declare v_borough_totalarea double; declare v_borough_type varchar(255); declare v_borough_volume double; declare v_check_advise varchar(255); declare v_check_name varchar(255); declare v_check_time varchar(255); declare v_click_num varchar(255); declare v_company_site varchar(255); declare v_delete_name varchar(255); declare v_delete_time varchar(255); declare v_draw_thumb varchar(255); declare v_draw_url varchar(255); declare v_elementary_school varchar(255); declare v_is_extension varchar(255); declare v_is_new varchar(255); declare v_is_promote varchar(255); declare v_layout_map varchar(255); declare v_middle_school varchar(255); declare v_percent_change double; declare v_pic_thumb varchar(255); declare v_pic_url varchar(255); declare v_plate_id varchar(255); declare v_project_site varchar(255); declare v_rent_num varchar(255); declare v_room_type varchar(255); declare v_sale_licence varchar(255); declare v_sale_office varchar(255); declare v_sel_phone varchar(255); declare v_sell_num varchar(255); declare v_sell_price double; declare v_sell_time varchar(255); declare v_status varchar(255); declare v_submit_name varchar(255); declare v_submit_time varchar(255); declare v_video varchar(255); declare v_create_by varchar(255); declare v_update_by varchar(255); v_id='',v_create_date='0000-01-01 00:00:00',v_del_flag='',v_remarks='',v_update_date='0000-01-01 00:00:00', v_address='',v_area_id='',v_area_name='',v_borough_alias='',v_borough_area=0.0, v_borough_avgprice=0.0,v_borough_bank='',v_borough_bus='',v_borough_company='',v_borough_completion='', v_borough_content='',v_borough_costs=0.0,v_borough_developer='',v_borough_dining='',v_borough_green=0.0, v_borough_hospital='',v_borough_letter='',v_borough_name='',v_borough_number='',v_borough_parking='', v_borough_properties='',v_borough_shop='',v_borough_sight='',v_borough_support='',v_borough_totalarea=0.0, v_borough_type='',v_borough_volume=0.0,v_check_advise='',v_check_name='',v_check_time='', v_click_num='',v_company_site='',v_delete_name='',v_delete_time='',v_draw_thumb='', v_draw_url='',v_elementary_school='',v_is_extension='',v_is_new='',v_is_promote='', v_layout_map='',v_middle_school='',v_percent_change=0.0,v_pic_thumb='',v_pic_url='', v_plate_id='',v_project_site='',v_rent_num='',v_room_type='',v_sale_licence='', v_sale_office='',v_sel_phone='',v_sell_num='',v_sell_price=0.0,v_sell_time='', v_status='',v_submit_name='',v_submit_time='',v_video='',v_create_by='', v_update_by='', `id`,`create_date`,`del_flag`,`remarks`,`update_date`, `address`,`area_id`,`area_name`,`borough_alias`,`borough_area`, `borough_avgprice`,`borough_bank`,`borough_bus`,`borough_company`,`borough_completion`, `borough_content`,`borough_costs`,`borough_developer`,`borough_dining`,`borough_green`, `borough_hospital`,`borough_letter`,`borough_name`,`borough_number`,`borough_parking`, `borough_properties`,`borough_shop`,`borough_sight`,`borough_support`,`borough_totalarea`, `borough_type`,`borough_volume`,`check_advise`,`check_name`,`check_time`, `click_num`,`company_site`,`delete_name`,`delete_time`,`draw_thumb`, `draw_url`,`elementary_school`,`is_extension`,`is_new`,`is_promote`, `layout_map`,`middle_school`,`percent_change`,`pic_thumb`,`pic_url`, `plate_id`,`project_site`,`rent_num`,`room_type`,`sale_licence`, `sale_office`,`sel_phone`,`sell_num`,`sell_price`,`sell_time`, `status`,`submit_name`,`submit_time`,`video`,`create_by`, `update_by`, v_id,v_create_date,v_del_flag,v_remarks,v_update_date, v_address,v_area_id,v_area_name,v_borough_alias,v_borough_area, v_borough_avgprice,v_borough_bank,v_borough_bus,v_borough_company,v_borough_completion, v_borough_content,v_borough_costs,v_borough_developer,v_borough_dining,v_borough_green, v_borough_hospital,v_borough_letter,v_borough_name,v_borough_number,v_borough_parking, v_borough_properties,v_borough_shop,v_borough_sight,v_borough_support,v_borough_totalarea, v_borough_type,v_borough_volume,v_check_advise,v_check_name,v_check_time, v_click_num,v_company_site,v_delete_name,v_delete_time,v_draw_thumb, v_draw_url,v_elementary_school,v_is_extension,v_is_new,v_is_promote, v_layout_map,v_middle_school,v_percent_change,v_pic_thumb,v_pic_url, v_plate_id,v_project_site,v_rent_num,v_room_type,v_sale_licence, v_sale_office,v_sel_phone,v_sell_num,v_sell_price,v_sell_time, v_status,v_submit_name,v_submit_time,v_video,v_create_by, v_update_by, `id`=v_id,`create_date`=v_create_date,`del_flag`=v_del_flag,`remarks`=v_remarks,`update_date`=v_update_date, `address`=v_address,`area_id`=v_area_id,`area_name`=v_area_name,`borough_alias`=v_borough_alias,`borough_area`=v_borough_area, `borough_avgprice`=v_borough_avgprice,`borough_bank`=v_borough_bank,`borough_bus`=v_borough_bus,`borough_company`=v_borough_company,`borough_completion`=v_borough_completion, `borough_content`=v_borough_content,`borough_costs`=v_borough_costs,`borough_developer`=v_borough_developer,`borough_dining`=v_borough_dining,`borough_green`=v_borough_green, `borough_hospital`=v_borough_hospital,`borough_letter`=v_borough_letter,`borough_name`=v_borough_name,`borough_number`=v_borough_number,`borough_parking`=v_borough_parking, `borough_properties`=v_borough_properties,`borough_shop`=v_borough_shop,`borough_sight`=v_borough_sight,`borough_support`=v_borough_support,`borough_totalarea`=v_borough_totalarea, `borough_type`=v_borough_type,`borough_volume`=v_borough_volume,`check_advise`=v_check_advise,`check_name`=v_check_name,`check_time`=v_check_time, `click_num`=v_click_num,`company_site`=v_company_site,`delete_name`=v_delete_name,`delete_time`=v_delete_time,`draw_thumb`=v_draw_thumb, `draw_url`=v_draw_url,`elementary_school`=v_elementary_school,`is_extension`=v_is_extension,`is_new`=v_is_new,`is_promote`=v_is_promote, `layout_map`=v_layout_map,`middle_school`=v_middle_school,`percent_change`=v_percent_change,`pic_thumb`=v_pic_thumb,`pic_url`=v_pic_url, `plate_id`=v_plate_id,`project_site`=v_project_site,`rent_num`=v_rent_num,`room_type`=v_room_type,`sale_licence`=v_sale_licence, `sale_office`=v_sale_office,`sel_phone`=v_sel_phone,`sell_num`=v_sell_num,`sell_price`=v_sell_price,`sell_time`=v_sell_time, `status`=v_status,`submit_name`=v_submit_name,`submit_time`=v_submit_time,`video`=v_video,`create_by`=v_create_by, `update_by`=v_update_by,