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sqlite3 count查询值相同的行数,php代码

WBOY
WBOYOriginal
2016-07-06 13:51:481509browse

$sql=SELECT COUNT(*) FROM

WHERE DATE = $date
EOF;
$ret = $db->query($sql);
echo "count:",$ret->numColumns();

我想通过上述代码查找表中DATE一列的包含相同值的行数,但是每次结果都是1,而实际表中满足要求的行数不为1,问题出在哪里?请问我该如何修改?

回复内容:

$sql=SELECT COUNT(*) FROM

WHERE DATE = $date
EOF;
$ret = $db->query($sql);
echo "count:",$ret->numColumns();

我想通过上述代码查找表中DATE一列的包含相同值的行数,但是每次结果都是1,而实际表中满足要求的行数不为1,问题出在哪里?请问我该如何修改?

sqlite语句是没问题的 问题出在后面。通过对$ret执行fetchArray得到的结果进行var_dump,可发现
array (size=1)
'COUNT(*)' => int 1
因此,可用$arr['COUNT(*)']输出正确结果

下次先多多尝试再提问,my bad

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