Schema::existsInDatabase
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Schema::existsInDatabase — Check if exists in database
Descrição
Checks if the current object (schema, table, collection, or view) exists in the schema object.
Parâmetros
Esta função não possui parâmetros.
Valor Retornado
true if the schema, table, collection, or view still exists in the schema, else false.
Exemplos
Exemplo #1 mysql_xdevapi\Schema::existsInDatabase() example
<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@localhost");
$session->sql("DROP DATABASE IF EXISTS food")->execute();
$session->sql("CREATE DATABASE food")->execute();
$session->sql("CREATE TABLE food.fruit(name text, rating text)")->execute();
$schema = $session->getSchema("food");
$schema->createCollection("trees");
// ...
$trees = $schema->getCollection("trees");
// ...
// Is this collection still in the database (schema)?
if ($trees->existsInDatabase()) {
echo "Yes, the 'trees' collection is still present.";
}O exemplo acima produzirá algo semelhante a:
Yes, the 'trees' collection is still present.
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