运行此perl脚本时出现此错误
DBD :: mysql :: st fetchrow_array失败：fetch（）没有执行ai_light_warehouse.pl第174行 DBD :: mysql :: st fetchrow_array失败：fetch（）没有在ai_light_warehouse.pl第187行执行
我似乎无法弄清楚为什么会发生这种情况，而且我并不精通perl。试图解决这个问题，但几个小时后遇到了障碍，并且发现我已经接触到了stackoverflow。
# reset warehouse table
my $reset_handle = $dbh->prepare(qq{
DELETE FROM ai_light_warehouse
});
my $select_handle = $dbh->prepare(qq{
SELECT DISTINCT PROD.PRODUCT_ID AS PRODUCT_ID,
PROD.PRODUCT_NAME AS PRODUCT_NAME,
PROD.BRAND_NAME AS BRAND_NAME,
PC.DESCRIPTION AS COLLECTION,
PFA.DESCRIPTION AS PRODUCT_FEATURE_ID,
PROD.DEFAULT_SEQUENCE_NUM AS POPULARITY,
PA.PRODUCT_ID AS VIRTUAL_PRODUCT_ID,
PROD.IS_VIRTUAL AS IS_VIRTUAL,
"N" AS ON_SALE,
CASE
WHEN PROD.TOTAL_TIMES_VIEWED IS NULL THEN 0
ELSE PROD.TOTAL_TIMES_VIEWED
END AS TOTAL_TIMES_VIEWED,
CASE
WHEN PROD.IS_CLEARANCE IS NULL THEN "N"
ELSE PROD.IS_CLEARANCE
END AS IS_CLEARANCE,
PROD.internal_Name
FROM PRODUCT PROD
INNER JOIN Ai_Light_category AS PC
ON (PROD.PRODUCT_ID = PC.PRODUCT_ID)
LEFT OUTER JOIN PRODUCT_ASSOC PA
ON PROD.PRODUCT_ID = PA.PRODUCT_ID_TO
INNER JOIN AI_LIGHT_FEATURES PFA
ON PA.PRODUCT_ID_TO = PFA.PRODUCT_ID
WHERE (PA.PRODUCT_ASSOC_TYPE_ID = "PRODUCT_VARIANT"
AND PFA.PRODUCT_FEATURE_TYPE_ID = "COLOR"
AND PROD.PRODUCT_TYPE_ID IN ("LIGHTING")
AND (PROD.IS_LIVE = "Y"
OR PROD.IS_LIVE IS NULL)
AND ((PROD.SALES_DISCONTINUATION_DATE > NOW()
OR PROD.SALES_DISCONTINUATION_DATE IS NULL)))
GROUP BY PA.PRODUCT_ID,
PFA.PRODUCT_FEATURE_ID
ORDER BY PROD.DEFAULT_SEQUENCE_NUM DESC,
UPPER(PROD.PRODUCT_NAME) ASC
});
# retrieve basic product information
my $insert_handle = $dbh->prepare(qq{
INSERT INTO ai_light_warehouse
(
PRODUCT_ID,
PRODUCT_NAME,
BRAND_NAME,
COLLECTION,
PRODUCT_FEATURE_ID,
MIN_PRICE,
MAX_PRICE,
POPULARITY,
VIRTUAL_PRODUCT_ID,
IS_VIRTUAL,
TOTAL_TIMES_VIEWED,
IS_CLEARANCE,
INTERNAL_NAME,
ON_SALE,
SELECTOR
)
VALUES
(
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?
)
});
# save default and list prices
my $price_handle = $dbh->prepare(qq{
UPDATE AI_LIGHT_WAREHOUSE W,
PRODUCT_PRICE PP1,
PRODUCT_PRICE PP2
SET W.PRICE = PP1.PRICE,
W.LIST_PRICE = PP2.PRICE
WHERE W.PRODUCT_ID = PP1.PRODUCT_ID
AND W.PRODUCT_ID = PP2.PRODUCT_ID
AND PP1.PRODUCT_PRICE_TYPE_ID = "DEFAULT_PRICE"
AND PP2.PRODUCT_PRICE_TYPE_ID = "LIST_PRICE"
});
my $selectWatt = $dbh->prepare(qq{
SELECT PF.PRODUCT_FEATURE_ID, PF.DESCRIPTION FROM AI_LIGHT_FEATURES PF WHERE PF.PRODUCT_FEATURE_TYPE_ID = "WATT_CAT" AND PF.PRODUCT_ID = ? limit 1
});
my $watt_handle = $dbh->prepare(qq{
UPDATE AI_LIGHT_WAREHOUSE SET WATT_CAT = ?, WATT_CAT_DESCRIPTION = ? WHERE PRODUCT_ID = ?
});
my $selectHEIGHT = $dbh->prepare(qq{
SELECT PF.PRODUCT_FEATURE_ID, PF.DESCRIPTION FROM AI_LIGHT_FEATURES PF WHERE PF.PRODUCT_FEATURE_TYPE_ID = "HEIGHT_CAT" AND PF.PRODUCT_ID = ? limit 1
});
my $HEIGHT_handle = $dbh->prepare(qq{
UPDATE AI_LIGHT_WAREHOUSE SET HEIGHT_CAT = ?, HEIGHT_CAT_DESCRIPTION = ? WHERE PRODUCT_ID = ?
});
my $selectType = $dbh->prepare(qq{
SELECT PF.PRODUCT_FEATURE_ID, PF.DESCRIPTION FROM AI_LIGHT_FEATURES PF WHERE PF.PRODUCT_FEATURE_TYPE_ID = "TYPE" AND PF.PRODUCT_ID = ? LIMIT 1
});
my $type_handle = $dbh->prepare(qq{
UPDATE AI_LIGHT_WAREHOUSE SET TYPE_CAT = ?, TYPE_CAT_DESCRIPTION = ? WHERE PRODUCT_ID = ?
});
my $selectMat = $dbh->prepare(qq{
SELECT PF.PRODUCT_FEATURE_ID, PF.DESCRIPTION FROM AI_LIGHT_FEATURES PF WHERE PF.PRODUCT_FEATURE_TYPE_ID = "MATERIAL_CAT" AND PF.PRODUCT_ID = ? LIMIT 1
});
my $mat_handle = $dbh->prepare(qq{
UPDATE AI_LIGHT_WAREHOUSE SET MAT_CAT = ?, MAT_CAT_DESCRIPTION = ? WHERE PRODUCT_ID = ?
});
my $select_Price = $dbh->prepare(qq{
SELECT PRICE FROM PRODUCT_PRICE WHERE PRODUCT_ID = ? AND PRODUCT_PRICE_TYPE_ID = "DEFAULT_PRICE"
});
my $variants_handle = $dbh->prepare(qq{
SELECT PA.PRODUCT_ID_TO FROM PRODUCT_ASSOC PA INNER JOIN PRODUCT PROD ON PROD.PRODUCT_ID = PA.PRODUCT_ID_TO WHERE PA.PRODUCT_ID = ? AND (PROD.SALES_DISCONTINUATION_DATE IS NULL OR PROD.SALES_DISCONTINUATION_DATE > NOW())
});
my $rating_handle = $dbh->prepare(qq{
SELECT PRODUCT_RATING FROM PRODUCT WHERE PRODUCT_ID = ?
});
die "Couldn't prepare queries; aborting"
unless defined $reset_handle
&& defined $insert_handle
&& defined $price_handle;
#------------------------------------------------------------
my %virtualMinPriceMap = ();
my %virtualMaxPriceMap = ();
my $success = 1;
$success &&= $reset_handle->execute();
$success &&= $select_handle->execute();
while (my($PRODUCT_ID, $PRODUCT_NAME, $BRAND_NAME, $COLLECTION, $PRODUCT_FEATURE_ID, $POPULARITY, $VIRTUAL_PRODUCT_ID, $IS_VIRTUAL, $ON_SALE, $TOTAL_TIMES_VIEWED, $IS_CLEARANCE, $internalName) = $select_handle->fetchrow_array())
{
$success &&= $rating_handle->execute($VIRTUAL_PRODUCT_ID);
my $rating = $rating_handle->fetchrow_array();
$PRODUCT_FEATURE_ID =~ s/^\s+//;
$PRODUCT_FEATURE_ID =~ s/\s+$//;
$PRODUCT_FEATURE_ID =~ s/ /-/g;
$PRODUCT_FEATURE_ID =~ s/--/-/g;
$PRODUCT_FEATURE_ID =~ s/[^0-9a-zA-Z_-]//g;
$PRODUCT_FEATURE_ID =~ tr/A-Z/a-z/;
my $selector = $VIRTUAL_PRODUCT_ID . $PRODUCT_FEATURE_ID;
my $MAX_PRICE = -1;
my $MIN_PRICE = -1;
if (!exists($virtualMinPriceMap{$VIRTUAL_PRODUCT_ID}))
{
$success &&= $variants_handle->execute($VIRTUAL_PRODUCT_ID);
while (my($variantId) = $variants_handle->fetchrow_array())
{
$success &&= $select_Price->execute($variantId);
while (my($priceValue) = $select_Price->fetchrow_array())
{
if($MIN_PRICE == -1 || $MIN_PRICE > $priceValue)
{
$MIN_PRICE = $priceValue;
}
if($MAX_PRICE < $priceValue)
{
$MAX_PRICE = $priceValue;
}
}
}
$virtualMaxPriceMap{$VIRTUAL_PRODUCT_ID} = $MAX_PRICE;
$virtualMinPriceMap{$VIRTUAL_PRODUCT_ID} = $MIN_PRICE;
}
else
{
$MAX_PRICE = $virtualMaxPriceMap{$VIRTUAL_PRODUCT_ID};
$MIN_PRICE = $virtualMinPriceMap{$VIRTUAL_PRODUCT_ID};
}
$success &&= $insert_handle->execute($PRODUCT_ID, $PRODUCT_NAME, $BRAND_NAME, $COLLECTION, $PRODUCT_FEATURE_ID, $MIN_PRICE, $MAX_PRICE, $POPULARITY, $VIRTUAL_PRODUCT_ID, $IS_VIRTUAL, $TOTAL_TIMES_VIEWED, $IS_CLEARANCE, $internalName, $ON_SALE, $selector);
$selectWatt->execute($PRODUCT_ID);
my ($watt_ID, $watt_description) = $selectWatt->fetchrow_array();
if(defined ($watt_ID))
{
$watt_handle->execute($watt_ID, $watt_description, $PRODUCT_ID);
}
$selectHEIGHT->execute($PRODUCT_ID);
my ($HEIGHT_ID, $height_description) = $selectHEIGHT->fetchrow_array();
if(defined ($HEIGHT_ID))
{
$HEIGHT_handle->execute($HEIGHT_ID, $height_description, $PRODUCT_ID);
}
$selectType->execute($PRODUCT_ID);
my ($type_ID, $type_description) = $selectType->fetchrow_array();
if(defined ($type_ID))
{
$type_handle->execute($type_ID, $type_description, $PRODUCT_ID);
}
$selectMat->execute($PRODUCT_ID);
my ($Mat_ID, $Mat_description) = $selectMat->fetchrow_array();
if(defined ($Mat_ID))
{
$mat_handle->execute($Mat_ID, $Mat_description, $PRODUCT_ID);
}
}
$success &&= $price_handle->execute();
$selectWatt->finish();
$selectHEIGHT->finish();
$rating_handle->finish();
$selectMat->finish();
$selectType->finish();
my $result = ($success ? $dbh->commit : $dbh->rollback);
unless($result) {
die "Couldn't finish transaction: " . $dbh->errstr;
}
$dbh->disconnect();
my $end_run = time();
my $run_time = $end_run - $start_run;
$run_time = $run_time/60;
print "Job took $run_time minut
ES \ n“个;
答案 0 :(得分：2)
以下有两个错误：
$success &&= $rating_handle->execute($VIRTUAL_PRODUCT_ID);
my $rating = $rating_handle->fetchrow_array();
如果$success为false，则会调用fetchrow_array而不会调用execute。
如果$success为真且execute失败，则会在fetchrow_array未成功通话的情况下致电execute。