function BasicSyntaxTest::testConcatFields

Tests string concatenation with field values.

We use 'job' and 'age' fields from the {test} table. Using the 'name' field for concatenation causes issues with custom or contrib database drivers, since its type 'varchar_ascii' may lead to using field-level collations not compatible with the other fields.

File

core/tests/Drupal/KernelTests/Core/Database/BasicSyntaxTest.php, line 38

Class

BasicSyntaxTest

Tests SQL syntax interpretation.

Namespace

Code

public function testConcatFields() {
    $result = $this->connection
        ->query('SELECT CONCAT(:a1, CONCAT(job, CONCAT(:a2, CONCAT(age, :a3)))) FROM {test} WHERE age = :age', [
        ':a1' => 'The age of ',
        ':a2' => ' is ',
        ':a3' => '.',
        ':age' => 25,
    ]);
    $this->assertSame('The age of Singer is 25.', $result->fetchField(), 'Field CONCAT works.');
}