jsonb search

Hi

In my quest of JSONB querying and searching without having to actually cast into a text, I found JSQuery

I do admit my JSONB knowledge shortcoming and I am not a developer but a DBA. As such some examples would be greatly appreciated since I tend to understand better

I compiled and installed the extension

1 - Exact matching without knowing the hierarchy, just the key and element, I built a set like

col1 | col2
------+--------------------------------------------------
1 | {"Home Email": {"EmailAddress": "1(at)yahoo(dot)com"}}
2 | {"Home Email": {"EmailAddress": "2(at)yahoo(dot)com"}}
3 | {"Home Email": {"EmailAddress": "3(at)yahoo(dot)com"}}

JSQuqery is super

SELECT * FROM test1 WHERE col2 @@ '*.EmailAddress = "1(at)yahoo(dot)com"';

Now I can do a performance boost using

CREATE INDEX idx1 ON test1 USING GIN (col2 jsonb_value_path_ops);

I see this yield

from

testdb=# explain analyze^JSELECT * FROM test1 WHERE col2 @@ '*.EmailAddress = "10(at)yahoo(dot)com"';
Seq Scan on test1 (cost=0.00..12423.00 rows=500 width=68) (actual time=0.016..160.777 rows=1 loops=1)
Filter: (col2 @@ '*."EmailAddress" = "10(at)yahoo(dot)com"'::jsquery)
Rows Removed by Filter: 499999
Planning time: 0.042 ms
Execution time: 160.799 ms
(5 rows)

to

testdb-# SELECT * FROM test1 WHERE col2 @@ '*.EmailAddress = "10(at)yahoo(dot)com"';
Bitmap Heap Scan on test1 (cost=31.88..1559.32 rows=500 width=68) (actual time=0.018..0.019 rows=1 loops=1)
Recheck Cond: (col2 @@ '*."EmailAddress" = "10(at)yahoo(dot)com"'::jsquery)
Heap Blocks: exact=1
-> Bitmap Index Scan on idx1 (cost=0.00..31.75 rows=500 width=0) (actual time=0.011..0.011 rows=1 loops=1)
Index Cond: (col2 @@ '*."EmailAddress" = "10(at)yahoo(dot)com"'::jsquery)
Planning time: 0.039 ms
Execution time: 0.038 ms
(7 rows)

A whooping 4000 times improvement

But I also noticed a vodka index

testdb=# CREATE INDEX idx2 ON
testdb-# test1 USING vodka (col2);
ERROR: access method "vodka" does not exist

What am I missing ?

2 - Is there anyway I can accomplish a pattern and/or case insensitive search using JSQuery similar to

select * from test2 where upper((col2 -> 'Home Email') ->> 'EmailAddress') ilike '%3%YAH%';

select * from test2 where (col2 -> 'Home Email') ->> 'EmailAddress' like '%3%yah%';

If so what indexing strategy can be used to have similar gains as above ?

Many thanks for any help

Armand