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array

array()

SinceVersion 1.2.0

array()

description

Syntax

ARRAY<T> array(T, ...)

根据参数构造并返回array, 参数可以是多列或者常量

notice

仅支持向量化引擎中使用

example

mysql> set enable_vectorized_engine=true;

mysql> select array("1", 2, 1.1);
+----------------------+
| array('1', 2, '1.1') |
+----------------------+
| ['1', '2', '1.1'] |
+----------------------+
1 row in set (0.00 sec)


mysql> select array(null, 1);
+----------------+
| array(NULL, 1) |
+----------------+
| [NULL, 1] |
+----------------+
1 row in set (0.00 sec)

mysql> select array(1, 2, 3);
+----------------+
| array(1, 2, 3) |
+----------------+
| [1, 2, 3] |
+----------------+
1 row in set (0.00 sec)

mysql> select array(qid, creationDate, null) from nested limit 4;
+------------------------------------+
| array(`qid`, `creationDate`, NULL) |
+------------------------------------+
| [1000038, 20090616074056, NULL] |
| [1000069, 20090616075005, NULL] |
| [1000130, 20090616080918, NULL] |
| [1000145, 20090616081545, NULL] |
+------------------------------------+
4 rows in set (0.01 sec)

keywords

ARRAY,ARRAY,CONSTRUCTOR