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  • MySQL rename database如何做?

    虽然MySQL里面有rename database的语法,但是只是在5.1.7 to 5.1.23提供的,其他版本并没有,要想做rename操作该如何做呢?percona提供了一个shell

    #!/bin/bash
    # Copyright 2013 Percona LLC and/or its affiliates
    set -e
    if [ -z "$3" ]; then
        echo "rename_db <server> <database> <new_database>"
        exit 1
    fi
    db_exists=`mysql -h $1 -e "show databases like '$3'" -sss`
    if [ -n "$db_exists" ]; then
        echo "ERROR: New database already exists $3"
        exit 1
    fi
    TIMESTAMP=`date +%s`
    character_set=`mysql -h $1 -e "show create database $2G" -sss | grep ^Create | awk -F'CHARACTER SET ' '{print $2}' | awk '{print $1}'`
    TABLES=`mysql -h $1 -e "select TABLE_NAME from information_schema.tables where table_schema='$2' and TABLE_TYPE='BASE TABLE'" -sss`
    STATUS=$?
    if [ "$STATUS" != 0 ] || [ -z "$TABLES" ]; then
        echo "Error retrieving tables from $2"
        exit 1
    fi
    echo "create database $3 DEFAULT CHARACTER SET $character_set"
    mysql -h $1 -e "create database $3 DEFAULT CHARACTER SET $character_set"
    TRIGGERS=`mysql -h $1 $2 -e "show triggersG" | grep Trigger: | awk '{print $2}'`
    VIEWS=`mysql -h $1 -e "select TABLE_NAME from information_schema.tables where table_schema='$2' and TABLE_TYPE='VIEW'" -sss`
    if [ -n "$VIEWS" ]; then
        mysqldump -h $1 $2 $VIEWS > /tmp/${2}_views${TIMESTAMP}.dump
    fi
    mysqldump -h $1 $2 -d -t -R -E > /tmp/${2}_triggers${TIMESTAMP}.dump
    for TRIGGER in $TRIGGERS; do
        echo "drop trigger $TRIGGER"
        mysql -h $1 $2 -e "drop trigger $TRIGGER"
    done
    for TABLE in $TABLES; do
        echo "rename table $2.$TABLE to $3.$TABLE"
        mysql -h $1 $2 -e "SET FOREIGN_KEY_CHECKS=0; rename table $2.$TABLE to $3.$TABLE"
    done
    if [ -n "$VIEWS" ]; then
        echo "loading views"
        mysql -h $1 $3 < /tmp/${2}_views${TIMESTAMP}.dump
    fi
    echo "loading triggers, routines and events"
    mysql -h $1 $3 < /tmp/${2}_triggers${TIMESTAMP}.dump
    TABLES=`mysql -h $1 -e "select TABLE_NAME from information_schema.tables where table_schema='$2' and TABLE_TYPE='BASE TABLE'" -sss`
    if [ -z "$TABLES" ]; then
        echo "Dropping database $2"
        mysql -h $1 $2 -e "drop database $2"
    fi
    if [ `mysql -h $1 -e "select count(*) from mysql.columns_priv where db='$2'" -sss` -gt 0 ]; then
        COLUMNS_PRIV="    UPDATE mysql.columns_priv set db='$3' WHERE db='$2';"
    fi
    if [ `mysql -h $1 -e "select count(*) from mysql.procs_priv where db='$2'" -sss` -gt 0 ]; then
        PROCS_PRIV="    UPDATE mysql.procs_priv set db='$3' WHERE db='$2';"
    fi
    if [ `mysql -h $1 -e "select count(*) from mysql.tables_priv where db='$2'" -sss` -gt 0 ]; then
        TABLES_PRIV="    UPDATE mysql.tables_priv set db='$3' WHERE db='$2';"
    fi
    if [ `mysql -h $1 -e "select count(*) from mysql.db where db='$2'" -sss` -gt 0 ]; then
        DB_PRIV="    UPDATE mysql.db set db='$3' WHERE db='$2';"
    fi
    if [ -n "$COLUMNS_PRIV" ] || [ -n "$PROCS_PRIV" ] || [ -n "$TABLES_PRIV" ] || [ -n "$DB_PRIV" ]; then
        echo "IF YOU WANT TO RENAME the GRANTS YOU NEED TO RUN ALL OUTPUT BELOW:"
        if [ -n "$COLUMNS_PRIV" ]; then echo "$COLUMNS_PRIV"; fi
        if [ -n "$PROCS_PRIV" ]; then echo "$PROCS_PRIV"; fi
        if [ -n "$TABLES_PRIV" ]; then echo "$TABLES_PRIV"; fi
        if [ -n "$DB_PRIV" ]; then echo "$DB_PRIV"; fi
        echo "    flush privileges;"
    fi

    来源:

    https://www.percona.com/blog/2013/12/24/renaming-database-schema-mysql/ 

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  • 原文地址:https://www.cnblogs.com/sunss/p/5249744.html
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