加减混合运算的顺序是什么

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select * from tbl_Articles WHERE ArticleID=1356331 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1356331 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1356331 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1050437,1066003,1071954,1057932,1048474,1076277,1066612,1086081,1083532,3030228,1078414,1049946,1128709,1091267,1120410,1132149,1057607,1083453,1086514,1065019,1088870,1096308,988905,1086608,1079840,1074198,1110067,1077268,1059801,1100639) ORDER BY field (ArticleID,1050437,1066003,1071954,1057932,1048474,1076277,1066612,1086081,1083532,3030228,1078414,1049946,1128709,1091267,1120410,1132149,1057607,1083453,1086514,1065019,1088870,1096308,988905,1086608,1079840,1074198,1110067,1077268,1059801,1100639)