I am wanting to partition my data based on a mod of one of the bigint columns, but when I run my insert test all the data goes into the base table and not the partitions. Here is what the table looks like:
CREATE table MyMappingTable ( id bigserial NOT NULL,
c1 bigInt NOT NULL,
c2 bigInt NOT NULL,
c3 bigint NOT NULL,
count bigint DEFAULT 1,
createdTime timestamp with time zone default CURRENT_TIMESTAMP,
CONSTRAINT MyMappingTable_index PRIMARY KEY (id) )
with (OIDS=FALSE);
CREATE TABLE MyMappingTableT1 (PRIMARY KEY (id), CHECK((c1 % 5) = 0)) INHERITS (MyMappingTable);
CREATE TABLE MyMappingTableT2 (PRIMARY KEY (id), CHECK((c1 % 5) = 1)) INHERITS (MyMappingTable);
CREATE TABLE MyMappingTableT3 (PRIMARY KEY (id), CHECK((c1 % 5) = 2)) INHERITS (MyMappingTable);
CREATE TABLE MyMappingTableT4 (PRIMARY KEY (id), CHECK((c1 % 5) = 3)) INHERITS (MyMappingTable);
CREATE TABLE MyMappingTableT5 (PRIMARY KEY (id), CHECK((c1 % 5) = 4)) INHERITS (MyMappingTable);
Here is the trigger function that I added to the database:
CREATE OR REPLACE FUNCTION my_mapping_table_insert_trigger()
RETURNS trigger AS $$
BEGIN
IF ( (NEW.c1 % 5) = 0 ) THEN
INSERT INTO MyMappingTableT1 VALUES (NEW.*);
ELSIF ( (NEW.c1 % 5) = 1 ) THEN
INSERT INTO MyMappingTableT2 VALUES (NEW.*);
ELSIF ( (NEW.c1 % 5) = 2 ) THEN
INSERT INTO MyMappingTableT3 VALUES (NEW.*);
ELSIF ( (NEW.c1 % 5) = 3 ) THEN
INSERT INTO MyMappingTableT4 VALUES (NEW.*);
ELSIF ( (NEW.c1 % 5) = 4 ) THEN
INSERT INTO MyMappingTableT5 VALUES (NEW.*);
ELSE
RAISE EXCEPTION 'c1 mod out of range. Something wrong with the my_mapping_table_insert_trigger() function!';
END IF;
RETURN NULL;
END;
$$
LANGUAGE plpgsql;
Here is the Trigger that I added to the table:
CREATE TRIGGER insert_my_mapping_table_trigger
BEFORE INSERT ON MyMappingTable
FOR EACH ROW EXECUTE PROCEDURE my_mapping_table_insert_trigger();
SET constraint_exclusion = ON;
Regards,
Richard
