Spammers don't spam manually, they just set xRumer or other software, and submits comments to 10,000 blogs without event moving a finger. They do not care about how smart blog owner is. Even if 99%...
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Spammers don't spam manually, they just set xRumer or other software, and submits comments to 10,000 blogs without event moving a finger. They do not care about how smart blog owner is. Even if 99%...
If you want to have most recent case_no that exists only in ONE of the tables, you should use
SELECT case_no FROM (SELECT tablea.case_no, tablea.date FROM `tablea` LEFT JOIN tableb ON...