我想为这个代码写一个快捷方式
例如,如果db my_table {id,my_words}中包含某些单词,我将删除许多条目
$sql= "delete from my_table where my_words like '%some1%' or my_words like '%some2%'";
mysql_query($sql) or die("query failed: $sql".mysql_error());
我有很多像some3,some4,some5 ..etc,所以我不能重复or my_words like '
我有以下php脚本,它选择所有我想选择的user_ids并将其插入到数组中。
$query = mysql_query(" SELECT `user_id` FROM users WHERE (surname LIKE '$name%' AND name LIKE '$surname%') OR (surname LIKE '$surname%' AND name LIKE '$name%') ");
while($run = mysql_fetch_array($query)){
$us
我正在试着写一个程序来决定前1000个质数的和。
def main():
sum = 0
numberOfPrimes = 0
divcount = 0
for number in range(1,10000):
for divider in range (1,(number/2) + 1):
if number%divider == 0:
divcount += 1
else:
divcount += 0
if
任务是以特殊格式打印素数no。我已经编写了一个MySQL脚本,但它正在抛出错误。
noGeneratorLoop:REPEAT
SET isFactor=1;
SET noOfFactors=0;
factorsCheckLoop:REPEAT
IF i%isFactor=0 THEN
SET noOfFactors = noOfFactors+1;
END IF;
你好,我正在尝试用php中的while循环来做函数,但是不能在这里写,这是我的代码
function mail_detail($mail_detail){
$data= mysql_query("select * from messages where messages.to = '$mail_detail' and to_viewed = 0 ORDER BY messages.id DESC");
while ($result= mysql_fetch_array($data)){
return $result;
}
}
我是一名学生,我试图写这段代码,以便显示存储在"mysql“服务器上的数据库中的员工的名字,虽然表存在,但我得到了这些异常!!:
com.mysql.jdbc.exceptions.MySQLSyntaxErrorException:表'task4DB.tst‘不存在于com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985) at com.mysql.jdbc.MysqlIO.sendCom
我正在写一个代码,它将乘以'x‘,直到它到达'y’。
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int x = scan.nextInt();
int y = scan.nextInt();
do {
x = (int)(x*(1.1f));
}
while(x < y);
}
在答案中,我必须得到'while‘被执行的次数。我不知道该怎么做。
对于mysql-5.7.30,以下循环语法似乎是无效的。 mysql> SET @r = 6
-> SET @i = 3
-> WHILE @i <= @r DO
-> BEGIN
-> PRINT @i
-> END WHILE;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syn
我找到了这一小段php代码来满足我的需求。
<?php
$allDocs = mysql_query("SELECT id, parent FROM modx_site_content ORDER BY id DESC");
while($doc = mysql_fetch_assoc($allDocs)) {
$parent = mysql_query("SELECT id FROM modx_site_content WHERE parent = " . $doc['id'] . " AND id = " . $doc[
我的mysql表如下:
id value
1 10
2 20
3 30
4 40
5 50
有两个are :开始和结束,我想要的是这样:
when start=end, the result is 0
when start>end, the result is 'sum(value) where id<=start and id>end'
when start<end, the result is 'sum(value) where id>start and id<=
我正在尝试使用bash脚本从MySQL获取所有列。我要把它们存储在一个数组中。如果我这样写:
mysql -uroot -pPassword1 "select column_name
from information_schema.columns
where table_schema = 'dbName'
and table_name = 'tableName';"
...I得到标识符名称太长的错误。如果我这样写:
mysql -uroot -pPassword1 <<- SMTH
select