regression-test/suites/correctness_p0/test_lag_lead_window.groovy

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suite("test_lag_lead_window") {
    def tableName = "wftest"


    sql """ DROP TABLE IF EXISTS ${tableName} """
    sql """
        CREATE TABLE IF NOT EXISTS ${tableName} ( `aa` varchar(10) NULL COMMENT "", `bb` text NULL COMMENT "", `cc` text NULL COMMENT "" ) 
        ENGINE=OLAP UNIQUE KEY(`aa`) DISTRIBUTED BY HASH(`aa`) BUCKETS 3 
        PROPERTIES ( "replication_allocation" = "tag.location.default: 1", "in_memory" = "false", "storage_format" = "V2" );
    """

    sql """ INSERT INTO ${tableName} VALUES 
        ('a','aa','/wyyt-image/2021/11/13/595345040188712460.jpg'),
        ('b','aa','/wyyt-image/2022/04/13/1434607674511761493.jpg'),
        ('c','cc','/wyyt-image/2022/04/13/1434607674511761493.jpg') """

    sql """ set enable_vectorized_engine = false """
    qt_select_default """ 
        select aa, bb, min(cc) over(PARTITION by cc  order by aa) ,
            lag(cc,1,'unknown') over (PARTITION by cc  order by aa) as lag_cc 
        from ${tableName}  
        order by aa; """

    qt_select_default2 """ select aa, bb, min(cc) over(PARTITION by cc  order by aa) ,
                                  lead(cc,1,'') over (PARTITION by cc  order by aa) as lead_cc 
                           from ${tableName} 
                           order by aa; """

    sql """ set enable_vectorized_engine = true """
    qt_select_default """ 
        select aa, bb, min(cc) over(PARTITION by cc  order by aa) ,
            lag(cc,1,'unknown') over (PARTITION by cc  order by aa) as lag_cc 
        from ${tableName}  
        order by aa; """

    qt_select_default2 """ select aa, bb, min(cc) over(PARTITION by cc  order by aa) ,
                                  lead(cc,1,'') over (PARTITION by cc  order by aa) as lead_cc 
                           from ${tableName} 
                           order by aa; """
    sql """ DROP TABLE IF EXISTS test1 """
    sql """ CREATE TABLE IF NOT EXISTS test1 (id varchar(255), create_time datetime)
            DISTRIBUTED BY HASH(id) PROPERTIES("replication_num" = "1"); """
    sql """ INSERT INTO test1 VALUES
            ('a','2022-09-06 00:00:00'),
            ('b','2022-09-06 00:00:01'),
            ('c','2022-09-06 00:00:02') """
    qt_select_default """ select id, create_time, lead(create_time, 1, '2022-09-06 00:00:00') over
                          (order by create_time desc) as "prev_time" from test1; """
    qt_select_default """ select id, create_time, lead(create_time, 1, date_sub('2022-09-06 00:00:00', interval 7 day)) over (order by create_time desc) as "prev_time" from test1; """
    sql """ DROP TABLE IF EXISTS test1 """
}