[dfunctions] dolt_join_cost prints full join memo

[max-hoffman]

gms side: dolthub/go-mysql-server#2917

tmp2/test-branch*> select dolt_join_cost('select * from uv, xy where u = x') as cost;
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| cost                                                                                                                                                                      |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| memo:                                                                                                                                                                     |
| ├── G1: (tablescan: uv 0.0)*                                                                                                                                              |
| ├── G2: (tablescan: xy 0.0)*                                                                                                                                              |
| └── G3: (hashjoin 1 2 8.0) (hashjoin 2 1 8.0) (mergejoin 1 2 4.1) (mergejoin 2 1 4.1) (lookupjoin 1 2 6.6) (lookupjoin 2 1 6.6) (innerjoin 2 1 5.0)* (innerjoin 1 2 5.0)* |
|                                                                                                                                                                           |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

[coffeegoddd]

@max-hoffman DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
b61d7f7	ok	5937457

version	total_tests
b61d7f7	5937457

correctness_percentage
100.0

[coffeegoddd]

@coffeegoddd DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
fcfbb45	ok	5937457

version	total_tests
fcfbb45	5937457

correctness_percentage
100.0

[coffeegoddd]

@max-hoffman DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
1fbe5d8	ok	5937457

version	total_tests
1fbe5d8	5937457

correctness_percentage
100.0

[coffeegoddd]

@max-hoffman DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
7a15622	ok	5937457

version	total_tests
7a15622	5937457

correctness_percentage
100.0