From e9fcde32640b27cc18d9cd75ec9d1aa967c0fb50 Mon Sep 17 00:00:00 2001
From: John Was <janek.jan@gmail.com>
Date: Sun, 24 Nov 2013 11:53:27 +0100
Subject: [PATCH] support for batch insert in sqlite older than 3.7.11

---
 framework/yii/db/sqlite/QueryBuilder.php           | 47 ++++++++++++++++++++++
 .../framework/db/sqlite/SqliteQueryBuilderTest.php |  6 +++
 2 files changed, 53 insertions(+)

diff --git a/framework/yii/db/sqlite/QueryBuilder.php b/framework/yii/db/sqlite/QueryBuilder.php
index 4a5407f..1e1bf61 100644
--- a/framework/yii/db/sqlite/QueryBuilder.php
+++ b/framework/yii/db/sqlite/QueryBuilder.php
@@ -42,6 +42,53 @@ class QueryBuilder extends \yii\db\QueryBuilder
 	];
 
 	/**
+	 * Generates a batch INSERT SQL statement.
+	 * For example,
+	 *
+	 * ~~~
+	 * $connection->createCommand()->batchInsert('tbl_user', ['name', 'age'], [
+	 *     ['Tom', 30],
+	 *     ['Jane', 20],
+	 *     ['Linda', 25],
+	 * ])->execute();
+	 * ~~~
+	 *
+	 * Note that the values in each row must match the corresponding column names.
+	 *
+	 * @param string $table the table that new rows will be inserted into.
+	 * @param array $columns the column names
+	 * @param array $rows the rows to be batch inserted into the table
+	 * @return string the batch INSERT SQL statement
+	 */
+	public function batchInsert($table, $columns, $rows)
+	{
+		if (($tableSchema = $this->db->getTableSchema($table)) !== null) {
+			$columnSchemas = $tableSchema->columns;
+		} else {
+			$columnSchemas = [];
+		}
+
+		foreach ($columns as $i => $name) {
+			$columns[$i] = $this->db->quoteColumnName($name);
+		}
+
+		$values = [];
+		foreach ($rows as $row) {
+			$vs = [];
+			foreach ($row as $i => $value) {
+				if (!is_array($value) && isset($columnSchemas[$columns[$i]])) {
+					$value = $columnSchemas[$columns[$i]]->typecast($value);
+				}
+				$vs[] = is_string($value) ? $this->db->quoteValue($value) : $value;
+			}
+			$values[] = implode(', ', $vs);
+		}
+
+		return 'INSERT INTO ' . $this->db->quoteTableName($table)
+		. ' (' . implode(', ', $columns) . ') SELECT ' . implode(' UNION ALL ', $values);
+	}
+
+	/**
 	 * Creates a SQL statement for resetting the sequence value of a table's primary key.
 	 * The sequence will be reset such that the primary key of the next new row inserted
 	 * will have the specified value or 1.
diff --git a/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php b/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php
index d7904d0..67cae28 100644
--- a/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php
+++ b/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php
@@ -81,4 +81,10 @@ class SqliteQueryBuilderTest extends QueryBuilderTest
 		$this->setExpectedException('yii\base\NotSupportedException');
 		parent::testAddDropPrimaryKey();
 	}
+
+	public function testBatchInsert()
+	{
+		$sql = $this->getQueryBuilder()->batchInsert('{{tbl_customer}} t', ['t.id','t.name'], array(array(1,'a'), array(2,'b')));
+		$this->assertEquals("INSERT INTO {{tbl_customer}} t ('t'.\"id\", 't'.\"name\") SELECT 1, 'a' UNION ALL 2, 'b'", $sql);
+	}
 }