PHP实现Oracle数据库分区的方法

CREATE TABLE table_name (
column1 datatype [ NULL | NOT NULL ],
column2 datatype [ NULL | NOT NULL ],
...
column_n datatype [ NULL | NOT NULL ]
)
PARTITioN BY RANGE (column_name)
(
PARTITION partition_name1 VALUES LESS THAN (value1),
PARTITION partition_name2 VALUES LESS THAN (value2),
...
PARTITION partition_n VALUES LESS THAN (value_n)
);

CREATE OR REPLACE FUNCTION partition_function (p_date DATE)
RETURN VARCHAR2
AS
BEGIN
IF p_date BETWEEN TO_DATE ('2020-01-01', 'YYYY-MM-DD') AND TO_DATE ('2020-06-30', 'YYYY-MM-DD') THEN
RETURN 'Q1_2020';
ELSIF p_date BETWEEN TO_DATE ('2020-07-01', 'YYYY-MM-DD') AND TO_DATE ('2020-12-31', 'YYYY-MM-DD') THEN
RETURN 'Q2_2020';
ELSIF p_date BETWEEN TO_DATE ('2021-01-01', 'YYYY-MM-DD') AND TO_DATE ('2021-06-30', 'YYYY-MM-DD') THEN
RETURN 'Q1_2021';
ELSE
RETURN 'Q2_2021';
END IF;
END;

INSERT INTO table_name (column1, column2, column_n, partition_column)
VALUES (value1, value2, value_n, partition_function(date_value));

SELECT COUNT(*) FROM table_name PARTITION (partition_name);