[YSQL] BEFORE ROW triggers on the partitioned table

[priyanshi-yb]

Jira Link: DB-13937

Description

This is the feature supported in PG13.

Example

CREATE TABLE test_partition_trigger (
    id INT,
    val TEXT,
    PRIMARY KEY (id)
) PARTITION BY RANGE (id);

CREATE TABLE test_partition_trigger_part1 PARTITION OF test_partition_trigger
    FOR VALUES FROM (1) TO (100);

CREATE TABLE test_partition_trigger_part2 PARTITION OF test_partition_trigger
    FOR VALUES FROM (100) TO (200);

CREATE OR REPLACE FUNCTION check_and_modify_val()
RETURNS TRIGGER AS $$
BEGIN
    -- Check if id is even; if not, modify `val` to indicate an odd ID
    IF (NEW.id % 2) <> 0 THEN
        NEW.val := 'Odd ID';
    END IF;

    -- Return the row with modifications (if any)
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

CREATE TRIGGER before_insert_check
BEFORE INSERT ON test_partition_trigger
FOR EACH ROW
EXECUTE FUNCTION check_and_modify_val();

Error-

ERROR:  "test_partition_trigger" is a partitioned table
DETAIL:  Partitioned tables cannot have BEFORE / FOR EACH ROW triggers.

Issue Type

kind/enhancement

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