找出没有主键的表

#!/bin/bash
# 找出没有主键的表 (排除MySQL自带的SCHEMA)
source /etc/profile
LOG="/tmp/nopk.log_$(date +%F)"
user='root'
host='localhost'
pass='123456'
sock='/tmp/mysql.sock'
MYSQL_CMD="mysql -u$user -h$host -p$pass -S$sock"
dbs=$($MYSQL_CMD 2>/dev/null -BNe "select SCHEMA_NAME from information_schema.SCHEMATA where SCHEMA_NAME not in ('information_schema','performance_schema','mysql','sys')")
for db in $dbs; do 
 $MYSQL_CMD information_schema 2>/dev/null -NBe "select distinct TABLE_SCHEMA,table_name from columns where  TABLE_SCHEMA = '$db' and table_name not in ( select distinct table_name from COLUMNS  where TABLE_SCHEMA = '$db' and (column_key  = 'PRI' or column_key = 'UNI') )" | tee -a $LOG
done