MySQL同時使用PHP在表格之間復制行

Question

我知道您可以這樣做：

INSERT INTO AnotherTable (a, b, c, d)
SELECT a, b, c, d
FROM SomeTable
WHERE SomeColumn = 1

但是，如果要代替SELECT a, b, c, d而是將這些列更新為a, b, c, "string"怎么辦？

簡而言之，我要聲明：

INSERT INTO AnotherTable (a, b, c, d)
SELECT a, b
FROM SomeTable
WHERE SomeColumn = 1
// And put  "string" into d

更新

所以我跑了這個：

INSERT INTO AnotherTable (a, b, c, d)
SELECT a, b, c, 'string'
FROM SomeTable
WHERE SomeColumn = 1

它選擇了“ c”列中具有不同條目的3行，並通過插入完全相同的3行來更新“ AnotherTable”。 盡管它們應該是不同的值...

Answer 1

INSERT INTO AnotherTable (a, b, c, d)
SELECT a, b,"SOME VALE","SOMEVALUE2"
FROM SomeTable
WHERE SomeColumn = 1

Answer 2

INSERT INTO AnotherTable (a, b, c, d)
SELECT a, b, $somevar, 'fixed string'
FROM SomeTable
WHERE SomeColumn = 1

但是，您應該非常小心地注入這樣的$ somevar。 確實，您應該使用准備好的語句，所以它將...

INSERT INTO AnotherTable (a, b, c, d)
SELECT a, b, :CustomValue, 'fixed string'
FROM SomeTable
WHERE SomeColumn = 1

通過將值綁定到語句來設置CustomValue。 這里有一些示例： http : //www.php.net/manual/zh/pdostatement.bindvalue.php