postgres=#SELECTt.relnameAStable_name, c.relnameASindex_nameFROM(SELECTrelname,indexrelidFROMpg_index i, pg_class cWHEREc.relname='testtable2'ANDindrelid=c.oid) t, pg_index i,pg_class cWHEREt.indexrelid=i.indexrelidANDi.indexrelid=c.oid;*table_name|index_name---+---testtable2|testtab...
v_table_ddl :=v_table_ddl||';'||E'\n';-- suffix create statement with all of the indexes on the tableFORv_index_recordINSELECTregexp_replace(indexdef,' "?'||schemaname||'"?\.',' ')ASindexdefFROMpg_catalog.pg_indexesWHERE(schemaname, tablename)=(in_schema_name, in_table_name...
postgres=# \d+ example_tbl Table "public.example_tbl"Column | Type | Collation | Nullable | Default | Storage | Compression | Stats target | Description---+---+---+---+---+---+---+---+---id | integer | | not null | | plain | ...
select A.SCHEMANAME, A.TABLENAME, A.INDEXNAME, A.TABLESPACE, A.INDEXDEF, B.AMNAME, C.INDEXRELID, C.INDNATTS, C.INDISUNIQUE, C.INDISPRIMARY, C.INDISCLUSTERED, D.DESCRIPTION from PG_AM B left join PG_CLASS F on B.OID = F.RELAM left join PG_STAT_ALL_INDEXES E on F.OID = E...
format('CREATE TABLE tab_%s (LIKE tab INCLUDING INDEXES)', dateStr); EXECUTE format('ALTER TABLE tab ATTACH PARTITION tab_%s FOR VALUES IN (%L)', dateStr, dateStr); RETURN1; END; $$; CREATE EXTENSION pg_cron; SELECT cron.schedule('0 14 * * *',$$SELECT create_tab_par...
select * from pg_class where relkind='S' 1. 2. 3. 2、查找Sequence中的值 SELECT nextval(‘seq_commodity’); 这里nextval表示下一个值 3、查看表中的 序列 david=# \d tbl_xulie Table "public.tbl_xulie" Column | Type | Modifiers ...
SELECT s.relname AS table_name, indexrelname AS index_name, i.indisunique, idx_scan AS index_scans FROM pg_catalog.pg_stat_user_indexes s, pg_index i WHERE i.indexrelid=s.indexrelid; 12.查找重复索引 SELECT indrelid::regclass table_name, ...
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO username; 三、数据库表或者索引 1、获取数据库表中的索引 select * from pg_indexes where tablename = 'product'; 2、获取当前db中所有表信息 select * from pg_tables; 3、查询数据库安装了哪些扩展 ...
CREATE TRIGGER trigger_name BEFORE INSERT OR UPDATE ON table FOR EACH ROW EXECUTE PROCEDUREtsvector_update_trigger(tsv_column, 'parser_name', field); // 创建一个更新分词触发器 这样,再进行查询时就可以直接使用 SELECT * FROM table WHERE tsv_column @@ 'keyword' 了。 这里需要注意,这时候在往表...
select status,T.* from user_indexes T where table_name='TABLE1' 1. 2. 3. 发现status='INVALID'失效。 重建该索引: drop index ... create index ... 问题解决。 是什么问题导致的索引失效呢?该问题是运行分区维护后发生的,于是把该问题转给了开发自动分区管理的同事了。该问题后续再补充。 三、知识...