Keyword Analysis & Research: primary key not null sql

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
primary key not null sql	0.98	0.6	3649	84	24
primary	0.61	1	9966	80	7
key	1.21	0.2	1802	91	3
not	0.06	0.4	9842	76	3
null	1.26	0.1	1847	2	4
sql	0.93	0.4	9243	10	3

Keyword	CPC	PCC	Volume	Score
primary key not null sql	1.74	0.4	6507	91
primary key not null comment	0.92	1	7860	57
create table sql not null primary key	1.17	1	5725	93
sqlite primary key not null	1.25	0.3	2273	34
primary key not null	0.83	0.4	1694	49
is primary key not null by default	0.52	1	2240	94
mysql primary key not null	0.22	0.3	7411	24
does primary key allow null values	0.6	0.4	5564	100
sql no primary key	0.94	0.9	7307	46
primary key not null auto_increment	1.24	0.5	301	97