mydb=# insert into testprimarykey values(2,'jerry');INSERT 0 1 mydb=# insert into testprimarykey values(3,'jimi');INSERT 0 1 mydb=# insert into testprimarykey values(1,'defan');ERROR: duplicate key value violates unique constraint"testprimarykey_pkey"DETAIL: Key (id)=(1) already e...
Note that the elements of the * sublists are just expressions, without ResTarget decoration. Also note * that a list element can be DEFAULT (represented as a SetToDefault * node), regardless of the context of the VALUES list. It's up to parse * analysis to reject that where not valid...
alter table c1 add constraint ck check (crt_time>='2018-04-04' and crt_time<'2018-05-04'); alter table c2 add constraint ck check (crt_time>='2018-05-04' and crt_time<'2018-06-04'); alter table c3 add constraint ck check (crt_time>='2018-06-04' and crt_time<'2018-07-0...
/* for EEOP_DOMAIN_NOTNULL / DOMAIN_CHECK */ struct { /* name of constraint */ char *constraintname; /* where the result of a CHECK constraint will be stored */ Datum *checkvalue; bool *checknull; /* OID of domain type */ Oid resulttype; } domaincheck; /* for EEOP_CONVERT_ROW...
RETURN NEW; END; $$ LANGUAGE plpgsql; CREATE TRIGGER test_insert_trig BEFORE INSERT ON test FOR EACH ROW EXECUTE PROCEDURE test_insert_trig_func() ; INSERT INTO test VALUES ('{1, 2}'); INSERT INTO test VALUES ('{2, 1}'); -- Generates a unique constraint violation SELECT * FROM te...
execute format('alter table tbl%s add constraint ck check(mod(id,%s)=%s)', i, parts, i); end loop; end; $$; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 3、创建触发器函数,内容为数据路由,路由后返回NULL(即不写本地父表) create or replace function ins_tbl() returns trigger as $$ ...
INSERTINTOTABLE_NAME (column1, column2, column3,...columnN)VALUES(value1, value2, value3,...valueN); column1, column2,...columnN 为表中字段名。 value1, value2, value3,...valueN 为字段对应的值。 在使用 INSERT INTO 语句时,字段列必须和数据值数量相同,且顺序也要对应。
In this example the check constraint validates that in the "data" jsonb column the value of the "name" key is a string, the value of the "similar_ids" key is an array of numerics, and the value of the "points" key is an array of objects which contain numeric values in "x" and...
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The row_filter is normal PostgreSQL expression which has the same limitations on what's allowed as the CHECK constraint. Simple row_filter would look something like row_filter := 'id > 0' which would ensure that only rows where values of id column is bigger than zero will be replicated. ...