WHERE
子句来筛选满足特定条件的记录。WHERE
子句来筛选满足特定条件的记录。php,$query = "SELECT * FROM table WHERE column LIKE '%keyword%'";,$result = $conn>query($query);,
``SELECT
查询结果创建表,可以使用 CREATE TABLE ... AS SELECT ...
语法。,,``sql,CREATE TABLE new_table AS,SELECT column1, column2,FROM existing_table,WHERE condition;,
`,,这样会创建一个名为
new_table 的新表,其结构和数据来源于
existing_table` 中满足条件的行。php,$sql = "SELECT a.*, b.* FROM table1 AS a JOIN table2 AS b ON a.id = b.a_id WHERE a.status = 1";,$result = $db>query($sql);,while ($row = $result>fetch_assoc()) {, // 处理查询结果,},
``,,这段代码展示了如何在 PHPCMS 中执行一个简单的连表查询,并遍历结果集。sql,SELECT * FROM information_schema.statistics;,
``,,这个查询会返回当前数据库中所有表的索引信息。sql,SELECT column_name FROM table_name WHERE condition;,
`,,
column_name是你要查询的text类型列的名称,
table_name是表的名称,
condition`是查询条件。DISTINCT
关键字来去除重复记录。Powered By Z-BlogPHP 1.7.3
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