Question

我有这个页面，用户将数据输入到数据库，数据被插入到数据库就好了，我仍然遇到更新查询的问题但是...当我点击时它一直给我以下错误信息提交：

INSERT INTO ongoing (project_no, project_title, duration, manager, country, total_fee, performed, remaining, gross_profit, gp, performance_year, gp_year) VALUES('ff', 'ffd', '', 'dd', 'f','f','f','d', 'gg','', '','')

Warning: pg_query() [function.pg-query]: Query failed: ERROR: duplicate key value violates unique constraint "ongoing_pkey" in C:\ms4w\Apache\htdocs\project\editongoing.php on line 64
Error in SQL query: ERROR: duplicate key value violates unique constraint "ongoing_pkey"

这是我的代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<title>Edit Ongoing projects</title>
</head>
<body bgcolor="666657">

<?php
// attempt a connection
$connection = pg_connect("host=localhost dbname=Project_list user=admin password=Password1");
if (!$connection) {
die("Error in connection: " . pg_last_error());
}
if ($_REQUEST['ProjectID']!=''){

$QueryStr = "Select * from ongoing where project_no='".$_REQUEST['ProjectID']."'";
$result = pg_query($connection, $QueryStr);
if (!$result) {
die("Error in SQL query: " . pg_last_error());
}
$row = pg_fetch_row($result);



}
if ($_POST['action']=='edit'){
$update=1;
}else {
$update = 0;

}
if ($_POST['submit']) {


// escape strings in input data
$project_no = pg_escape_string($_POST['project_no']);
$title = pg_escape_string($_POST['title']);
$duration = pg_escape_string($_POST['duration']);
$manager = pg_escape_string($_POST['manager']);
$country = pg_escape_string($_POST['country']);
$total_fee = pg_escape_string($_POST['total_fee']);
$performed = pg_escape_string($_POST['performed']);
$remaining = pg_escape_string($_POST['remaining']);
$gross_profit = pg_escape_string($_POST['gross_profit']);
$gp = pg_escape_string($_POST['gp']);
$performance_year = pg_escape_string($_POST['performance_year']);
$gp_year = pg_escape_string($_POST['gp_year']);

if ($update==0){
// execute query
$sql = "INSERT INTO ongoing (project_no, project_title, duration, manager, country, total_fee,
performed, remaining, gross_profit, gp, performance_year, gp_year)
VALUES('$project_no', '$title', '$duration', '$manager', '$country','$total_fee','$performed','$remaining',
'$gross_profit','$gp', '$performance_year','$gp_year')";
} else {
$sql="UPDATE ongoing SET project_no='".pg_escape_string($_POST['project_no'])."' , project_title='".pg_escape_string($_POST['title'])."',duration='".pg_escape_string($_POST['duration']).
 ",manager='".pg_escape_string($_POST['manager'])."',country='".pg_escape_string($_POST['country'])."', total_fee=".pg_escape_string($_POST['total_fee']).
 " ,performed=".pg_escape_string($_POST['performed']).", remaining=".pg_escape_string($_POST['remaining']).", gross_profit=".pg_escape_string($_POST['gross_profit']).
 " , gp='".pg_escape_string($_POST['gp'])."' , performance_year=". pg_escape_string($_POST['performance_year']).", gp_year=". pg_escape_string($_POST['gp_year'])."";


 }
 print_r($sql);
 $result = pg_query($connection, $sql);
 if (!$result) {
     die("Error in SQL query: " . pg_last_error());
 }

 echo "Data successfully inserted!";


 // free memory
 pg_free_result($result);

 // close connection
 pg_close($connection);
}
?>

<form action= "<?php echo $_SERVER['PHP_SELF']; ?>" method="post"><b><font color = "#ffb200">
  Project No.: <br>  <input id="project_no" type="text" name="project_no" size="20" value=<?= $row[0] ?>>
  <p>
  Project Title: <br> <input id="title" type="text" name="title" value=<?= $row[1] ?>>
  <p>
  Duration: <br> <input ID="duration" type="text" name="duration" value=<?= $row[2]?>>
  <p>
  Project Manager: <br> <input ID="manager" type="text" name="manager" value=<?= $row[3] ?>>
  <p>
  Country: <br> <input ID="country" type="text" name="country"  value=<?= $row[4] ?>>
  <p>
  Total Fee: <br> <input ID="total_fee" type="text" name="total_fee" value=<?= $row[5] ?>>
  <p>
  Already performed: <br> <input ID="performed" type="text" name="performed" value=<?= $row[6] ?>>
  <p>
  Remaining performance: <br> <input ID="remaining" type="text" name="remaining" value=<?= $row[7] ?>>
  <p>
  Gross Profit: <br> <input ID="gross_profit" type="text" name="gross_profit" value=<?= $row[8] ?>>
  <p>
  GP%: <br> <input ID="gp" type="text" name="gp" value=<?= $row[9] ?>>
  <p>
  Performance actual year: <br> <input ID="performance_year" type="text" name="performance_year" value=<?= $row[10] ?>>
  <p>
  GP actual year: <br> <input ID="gp_year" type="text" name="gp_year" value=<?= $row[11] ?>>
  <p>
<input type=text name=action value=<?=$_REQUEST['action'] ?>><br>
  <input type="submit" name="submit" value="Sumbit my table" size="30">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  <P>
  <a href="ongoing.php"</a>View ongoing projects</a>
  <a href="editproject.php"</a>Back to editing menu</a>
</form>

</body>
</html>

这是架构

CREATE TABLE ongoing (
    project_no character varying(80) NOT NULL,
    project_title character varying(80),
    duration character varying(20),
    manager character varying(80),
    country character varying(80),
    totalfee integer,
    performed integer,
    remaining integer,
    gross_profit integer,
    gp character varying(20),
    performance_year integer,
    gp_year integer,
    lastmodified timestamp without time zone DEFAULT now(),
    "Active" character varying(20)
);


ALTER TABLE public.ongoing OWNER TO postgres;

COPY ongoing (project_no, project_title, duration, manager, country, totalfee, performed, remaining, gross_profit, gp, performance_year, gp_year, lastmodified, "Active") FROM stdin;
K90.6849.001.412090 Water Supply and Sanitat Queena \N  \N  \N  \N  \N  \N  \N  \N  \N  \N  2011-05-22 13:01:08.593 \N
\.

ALTER TABLE ONLY ongoing
    ADD CONSTRAINT ongoing_pkey PRIMARY KEY (project_no);

CREATE TRIGGER update_lastmodified_modtime
    BEFORE UPDATE ON ongoing
    FOR EACH ROW
    EXECUTE PROCEDURE update_lastmodified_column();

REVOKE ALL ON SCHEMA public FROM PUBLIC;
REVOKE ALL ON SCHEMA public FROM postgres;
GRANT ALL ON SCHEMA public TO postgres;
GRANT ALL ON SCHEMA public TO PUBLIC;

Answer 1

您正在将整个表中的主键更新为一个值。

你不应该更新project_no，而是添加where子句，例如

WHERE project_no = pg_escape_string($_POST['project_no']);

Answer 2

确定触发了哪个条件，发出一个回音'这就是';如果阻止所以你现在可以在确定哪个条件为真之后，否则只关注sql并忽略所有php代码，这意味着：

回显sql并直接从客户端测试它。最后，悲伤说的对我来说也是有道理的。

插入db时出现“重复键”错误

2 个答案: