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Schema::existsInDatabaseCheck if exists in database


public mysql_xdevapi\Schema::existsInDatabase(): bool

Checks if the current object (schema, table, collection, or view) exists in the schema object.


Esta função não possui parâmetros.

Valor Retornado

true if the schema, table, collection, or view still exists in the schema, else false.


Exemplo #1 mysql_xdevapi\Schema::existsInDatabase() example

= 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");

// ...

$trees = $schema->getCollection("trees");

// ...

// Is this collection still in the database (schema)?
if ($trees->existsInDatabase()) {
"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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