常用sql【pgsql】——建表相关

1. 清空数据库数据

   TRUNCATE TABLE public.sbom_vulnerability_info;

2. 建索引

   CREATE INDEX idx_official_release_time ON sbom_vulnerability_info (official_release_time);
   
   CREATE INDEX idx_affected_components ON sbom_vulnerability_info (affected_components);
   
   ALTER TABLE sbom_vulnerability_info 
   ADD CONSTRAINT uk_sbom_vulnerability_info_vuln_id UNIQUE (vuln_id);

3. 修改时间格式

   -- 修改字段类型为带时区的timestamp，并设置东八区默认值
   ALTER TABLE sbom_vulnerability_info
   ALTER COLUMN severity_update_time 
   TYPE TIMESTAMP WITH TIME ZONE 
   USING severity_update_time AT TIME ZONE 'Asia/Shanghai',
   ALTER COLUMN severity_update_time 
   SET DEFAULT (CURRENT_TIMESTAMP AT TIME ZONE 'Asia/Shanghai');

4. 创建种子值

   -- 创建种子值
   CREATE SEQUENCE IF NOT EXISTS sbom_vulnerability_info_id_seq;
   ALTER TABLE sbom_vulnerability_info ALTER COLUMN id SET DEFAULT nextval('sbom_vulnerability_info_id_seq');

未完待续...