MySQL 导出视图、函数、存储过程、事件、触发器的定义

鉴于单独导出这些脚本太麻烦，一般都跟着表结构或其他不必要的数据一起导出，因此整理了一个简单的shell脚本，直接随意导出想要的对象的定义。

#!/bin/bash
# ./output_db_object_definition.sh > /dev/null 2>&1
db_user=""
db_pwd=""
db_host=""
db_port=3306
db_name="" 
save_file="/root/${db_name}_object_definition.sql"
output_type='view,function,procedure,event,trigger' # view,function,procedure,event,trigger

(cat <<out
/*
ouput object‘s definition for database "$db_name"
ouput time: $(date "+%Y-%m-%d %H:%M:%S")
ouput object type: $output_type
*/
out
)>$save_file
echo "">> $save_file
echo "">> $save_file

# 视图
if [[ $output_type == *"view"* ]]
then
	echo "-- ------------------------------------------------------------" >> $save_file
	echo "-- views" >> $save_file
	echo "-- ------------------------------------------------------------" >> $save_file
	mysql -h$db_host -P$db_port -u$db_user -p$db_pwd --skip-column-names \
	-e "select concat('SHOW CREATE VIEW ',table_schema,'.',table_name,';') from information_schema.views where table_schema='$db_name'" |\
	sed 's/;/\\G/g' | mysql -h$db_host -P$db_port -u$db_user -p$db_pwd |\
	sed 's/Create View: /kk_begin\n/g' | sed 's/[ ]*character_set_client:/;\nkk_end/g' |\
	sed -n '/kk_begin/{:a;N;/kk_end/!ba;s/.*kk_begin\|kk_end.*//g;p}'  >> $save_file
fi

# 函数
if [[ $output_type == *"function"* ]]
then
	echo "-- ------------------------------------------------------------" >> $save_file
	echo "-- function" >> $save_file
	echo "-- ------------------------------------------------------------" >> $save_file
	mysql -h$db_host -P$db_port -u$db_user -p$db_pwd --skip-column-names \
	-e "select concat('SHOW CREATE FUNCTION ',routine_schema,'.',routine_name,';') from information_schema.routines where routine_schema='$db_name' and ROUTINE_TYPE='FUNCTION'" |\
	sed 's/;/\\G/g' | mysql -h$db_host -P$db_port -u$db_user -p$db_pwd |\
	sed 's/Create Function: /kk_begin\ndelimiter $$\n/g' | sed 's/[ ]*character_set_client:/$$ \ndelimiter ;\nkk_end/g' |\
	sed -n '/kk_begin/{:a;N;/kk_end/!ba;s/.*kk_begin\|kk_end.*//g;p}' >> $save_file

fi

# 存储过程
if [[ $output_type == *"procedure"* ]]
then
	echo "-- ------------------------------------------------------------" >> $save_file
	echo "-- procedure" >> $save_file
	echo "-- ------------------------------------------------------------" >> $save_file
	mysql -h$db_host -P$db_port -u$db_user -p$db_pwd --skip-column-names \
	-e "select concat('SHOW CREATE PROCEDURE ',routine_schema,'.',routine_name,';') from information_schema.routines where routine_schema='$db_name' and ROUTINE_TYPE='PROCEDURE'" |\
	sed 's/;/\\G/g' | mysql -h$db_host -P$db_port -u$db_user -p$db_pwd |\
	sed 's/Create Procedure: /kk_begin\ndelimiter $$\n/g' | sed 's/[ ]*character_set_client:/$$ \ndelimiter ;\nkk_end/g' |\
	sed -n '/kk_begin/{:a;N;/kk_end/!ba;s/.*kk_begin\|kk_end.*//g;p}' >> $save_file
fi

# 事件
if [[ $output_type == *"event"* ]]
then
	echo "-- ------------------------------------------------------------" >> $save_file
	echo "-- event" >> $save_file
	echo "-- ------------------------------------------------------------" >> $save_file
	mysql -h$db_host -P$db_port -u$db_user -p$db_pwd --skip-column-names \
	-e "select concat('SHOW CREATE EVENT ',EVENT_SCHEMA,'.',EVENT_NAME,';') from information_schema.events where EVENT_SCHEMA='$db_name'" |\
	sed 's/;/\\G/g' | mysql -h$db_host -P$db_port -u$db_user -p$db_pwd |\
	sed 's/Create Event: /kk_begin\ndelimiter $$\n/g' | sed 's/[ ]*character_set_client:/$$ \ndelimiter ;\nkk_end/g' |\
	sed -n '/kk_begin/{:a;N;/kk_end/!ba;s/.*kk_begin\|kk_end.*//g;p}' >> $save_file
fi

# 触发器
if [[ $output_type == *"trigger"* ]]
then
	echo "-- ------------------------------------------------------------" >> $save_file
	echo "-- trigger" >> $save_file
	echo "-- ------------------------------------------------------------" >> $save_file
	mysql -h$db_host -P$db_port -u$db_user -p$db_pwd --skip-column-names \
	-e "select concat('SHOW CREATE TRIGGER ',TRIGGER_SCHEMA,'.',TRIGGER_NAME,';') from information_schema.triggers where TRIGGER_SCHEMA='$db_name';" |\
	sed 's/;/\\G/g' | mysql -h$db_host -P$db_port -u$db_user -p$db_pwd |\
	sed 's/SQL Original Statement: /kk_begin\ndelimiter $$\n/g' | sed 's/[ ]*character_set_client:/$$ \ndelimiter ;\nkk_end/g' |\
	sed -n '/kk_begin/{:a;N;/kk_end/!ba;s/.*kk_begin\|kk_end.*//g;p}' >> $save_file
fi

# ^M, you need to type CTRL-V and then CTRL-M
sed -i "s/\^M//g" $save_file