Currently the catalog has 56 active categories with at least one query.

Number of queries in different categories

216 queries
198 queries
162 queries
160 queries
127 queries
126 queries
121 queries
115 queries
105 queries
104 queries
103 queries
97 queries
92 queries
87 queries
80 queries
68 queries
60 queries
59 queries
49 queries
49 queries
33 queries
32 queries
31 queries
30 queries
25 queries
25 queries
24 queries
23 queries
20 queries
19 queries
19 queries
16 queries
16 queries
15 queries
13 queries
13 queries
13 queries
12 queries
12 queries
12 queries
11 queries
11 queries
11 queries
10 queries
9 queries
9 queries
8 queries
7 queries
7 queries
6 queries
6 queries
6 queries
4 queries
3 queries
3 queries
3 queries
Category NameNumber of QueriesRanking
Naming (opens in new tab)2161
User-defined routines (opens in new tab)1982
Validity and completeness (opens in new tab)1623
CHECK constraints (opens in new tab)1604
Data types (opens in new tab)1275
Derived tables (opens in new tab)1266
Relationships between tables (opens in new tab)1217
Comfortability of database evolution (opens in new tab)1158
Comfortability of data management (opens in new tab)1059
Result quality depends on names (opens in new tab)10410
Inconsistencies (opens in new tab)10311
Triggers and rules (opens in new tab)9712
Does not work in some earlier PostgreSQL version (opens in new tab)9213
Uniqueness (opens in new tab)8714
Performance (opens in new tab)8015
Default value (opens in new tab)6816
Security (opens in new tab)6017
Duplication of implementation elements (opens in new tab)5918
Domains (opens in new tab)4919
Missing data (opens in new tab)4919
Sequence generators (opens in new tab)3320
Regular expressions (opens in new tab)3221
Structure of base tables (opens in new tab)3122
Temporal data (opens in new tab)3023
Data at the database physical level (opens in new tab)2524
Syntactics (opens in new tab)2524
Boolean data (opens in new tab)2425
Field size (opens in new tab)2326
Unused implementation elements (opens in new tab)2027
Compensating actions (opens in new tab)1928
Database design antipatterns (opens in new tab)1928
Table inheritance (opens in new tab)1629
Transactions (opens in new tab)1629
System-defined functions (opens in new tab)1530
Classifier tables (opens in new tab)1331
Data at the database logical level (opens in new tab)1331
Distributed database (opens in new tab)1331
Assessment (opens in new tab)1232
Comments (opens in new tab)1232
Concurrency control (opens in new tab)1232
Fatal problems (opens in new tab)1133
Hierarchical data (opens in new tab)1133
User-defined types (opens in new tab)1133
State machine (opens in new tab)1034
Case sensitivity vs. case insensitivity (opens in new tab)935
Range types (opens in new tab)935
Stubs (opens in new tab)836
Full text search (opens in new tab)737
TOAST (opens in new tab)737
Extensions (opens in new tab)638
Generated columns (opens in new tab)638
Overloading (opens in new tab)638
Conformance to SQL standard (opens in new tab)439
Data redundancy (opens in new tab)340
Read user data (opens in new tab)340
Schemas (opens in new tab)340