TDengine/test/cases/10-Functions/01-SingleRow/test_func_cast.py

from new_test_framework.utils import tdLog, tdSql, sc, clusterComCheck


class TestFuncCast:

    def setup_class(cls):
        tdLog.debug(f"start to execute {__file__}")

    def test_func_cast(self):
        """Cast 函数

        1. 创建超级表、子表并写入数据
        2. 执行最基本的 cast 函数，转换数字和时间戳

        Catalog:
            - Function:SingleRow

        Since: v3.0.0.0

        Labels: common,ci

        Jira: None

        History:
            - 2025-4-28 Simon Guan Migrated to new test framework, from tests/script/tsim/scalar/scalar.sim

        """

        tdLog.info(f"======== step1")
        tdSql.prepare("db1", drop=True, vgroups=3)
        tdSql.execute(f"use db1;")
        tdSql.execute(
            f"create stable st1 (fts timestamp, fbool bool, ftiny tinyint, fsmall smallint, fint int, fbig bigint, futiny tinyint unsigned, fusmall smallint unsigned, fuint int unsigned, fubig bigint unsigned, ffloat float, fdouble double, fbin binary(10), fnchar nchar(10)) tags(tts timestamp, tbool bool, ttiny tinyint, tsmall smallint, tint int, tbig bigint, tutiny tinyint unsigned, tusmall smallint unsigned, tuint int unsigned, tubig bigint unsigned, tfloat float, tdouble double, tbin binary(10), tnchar nchar(10));"
        )
        tdSql.execute(
            f"create table tb1 using st1 tags('2022-07-10 16:31:00', true, 1, 1, 1, 1, 1, 1, 1, 1, 1.0, 1.0, 'a', 'a');"
        )
        tdSql.execute(
            f"create table tb2 using st1 tags('2022-07-10 16:32:00', false, 2, 2, 2, 2, 2, 2, 2, 2, 2.0, 2.0, 'b', 'b');"
        )
        tdSql.execute(
            f"create table tb3 using st1 tags('2022-07-10 16:33:00', true, 3, 3, 3, 3, 3, 3, 3, 3, 3.0, 3.0, 'c', 'c');"
        )

        tdSql.execute(
            f"insert into tb1 values ('2022-07-10 16:31:01', false, 1, 1, 1, 1, 1, 1, 1, 1, 1.0, 1.0, 'a', 'a');"
        )
        tdSql.execute(
            f"insert into tb1 values ('2022-07-10 16:31:02', true, 2, 2, 2, 2, 2, 2, 2, 2, 2.0, 2.0, 'b', 'b');"
        )
        tdSql.execute(
            f"insert into tb1 values ('2022-07-10 16:31:03', false, 3, 3, 3, 3, 3, 3, 3, 3, 3.0, 3.0, 'c', 'c');"
        )
        tdSql.execute(
            f"insert into tb1 values ('2022-07-10 16:31:04', true, 4, 4, 4, 4, 4, 4, 4, 4, 4.0, 4.0, 'd', 'd');"
        )
        tdSql.execute(
            f"insert into tb1 values ('2022-07-10 16:31:05', false, 5, 5, 5, 5, 5, 5, 5, 5, 5.0, 5.0, 'e', 'e');"
        )

        tdSql.execute(
            f"insert into tb2 values ('2022-07-10 16:32:01', false, 1, 1, 1, 1, 1, 1, 1, 1, 1.0, 1.0, 'a', 'a');"
        )
        tdSql.execute(
            f"insert into tb2 values ('2022-07-10 16:32:02', true, 2, 2, 2, 2, 2, 2, 2, 2, 2.0, 2.0, 'b', 'b');"
        )
        tdSql.execute(
            f"insert into tb2 values ('2022-07-10 16:32:03', false, 3, 3, 3, 3, 3, 3, 3, 3, 3.0, 3.0, 'c', 'c');"
        )
        tdSql.execute(
            f"insert into tb2 values ('2022-07-10 16:32:04', true, 4, 4, 4, 4, 4, 4, 4, 4, 4.0, 4.0, 'd', 'd');"
        )
        tdSql.execute(
            f"insert into tb2 values ('2022-07-10 16:32:05', false, 5, 5, 5, 5, 5, 5, 5, 5, 5.0, 5.0, 'e', 'e');"
        )

        tdSql.execute(
            f"insert into tb3 values ('2022-07-10 16:33:01', false, 1, 1, 1, 1, 1, 1, 1, 1, 1.0, 1.0, 'a', 'a');"
        )
        tdSql.execute(
            f"insert into tb3 values ('2022-07-10 16:33:02', true, 2, 2, 2, 2, 2, 2, 2, 2, 2.0, 2.0, 'b', 'b');"
        )
        tdSql.execute(
            f"insert into tb3 values ('2022-07-10 16:33:03', false, 3, 3, 3, 3, 3, 3, 3, 3, 3.0, 3.0, 'c', 'c');"
        )
        tdSql.execute(
            f"insert into tb3 values ('2022-07-10 16:33:04', true, 4, 4, 4, 4, 4, 4, 4, 4, 4.0, 4.0, 'd', 'd');"
        )
        tdSql.execute(
            f"insert into tb3 values ('2022-07-10 16:33:05', false, 5, 5, 5, 5, 5, 5, 5, 5, 5.0, 5.0, 'e', 'e');"
        )

        tdSql.query(f"select 1+1n;")
        tdSql.checkRows(1)

        tdSql.checkData(0, 0, 2.000000000)

        tdSql.query(f"select cast(1 as timestamp)+1n;")
        tdSql.checkRows(1)
        tdLog.info(f"==== {tdSql.getData(0,0)}")
        tdSql.checkData(0, 0, "1970-02-01 08:00:00.001000")

        tdSql.query(
            f"select cast('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' as double);"
        )
        tdSql.query(f"select 1-1n;")
        tdSql.checkRows(1)

        # there is an *bug* in print timestamp that smaller than 0, so let's try value that is greater than 0.
        tdSql.query(f"select cast(1 as timestamp)+1y;")
        tdSql.checkRows(1)
        tdLog.info(f"==== {tdSql.getData(0,0)}")
        tdSql.checkData(0, 0, "1971-01-01 08:00:00.001000")

        tdSql.query(f"select 1n-now();")
        tdSql.query(f"select 1n+now();")