v_table_ddl :=v_table_ddl||'COMMENT ON COLUMN "'||in_table_name||'"."'||v_column_comment_record.column_name||'" IS '''||replace(v_column_comment_record.description,''',''')||''';'||E'\n';ENDLOOP;-- comment on indexFORv_index_comment_recordINSELECTc.relname, d.descripti...
postgres=# \d+ example_tbl Table "public.example_tbl"Column | Type | Collation | Nullable | Default | Storage | Compression | Stats target | Description---+---+---+---+---+---+---+---+---id | integer | | not null | | plain | ...
Third, use the \dt command from the PostgreSQL command prompt to show tables in the dvdrental database: \dt Output: List of relations Schema | Name | Type | Owner ---+---+---+--- public | actor | table | postgres public | address | table | postgres public | category | table ...
col.is_nullable, col.column_default, des.description from information_schema.columns col left join pg_description des on col.table_name::regclass = des.objoid and col.ordinal_position = des.objsubid where table
对于每一个需要同步的表,需要手动执行ALTER TABLE [tableName] REPLICA IDENTITY FULL语句进行授权,否则实时同步任务会报错。 PostgreSQL实时同步任务启动后,会在数据库中自动创建slot、publications,slot名称格式为:di_slot_ + 解决方案ID,publication名称格式为:di_pub_ + 解决方案ID,当实时同步任务停止或下线后,需手...
列举表,相当于mysql的show tables\dt查看表结构,相当于desc tblname,show columns from tbname\d tblname\di 查看索引 创建数据库:create database [数据库名];删除数据库:drop database [数据库名];重命名一个表:alter table [表名A] rename to [表名B];删除一个表:drop table [表名];在已有的表里...
table DETAIL: Number of returned columns (1) does not match expected column count (3). CONTEXT: PL/pgSQL function tg_t_ret() during function exit LOCATION: convert_tuples_by_position, tupconvert.c:137 【小结1】 INSERT 触发器: for TABLE 1. before for each statement (触发器函数的返回值...
列举表,相当于mysql的show tables \dt 查看表结构,相当于desc tblname,show columns from tbname \d tblname \di 查看索引 创建数据库: create database [数据库名]; 删除数据库: drop database [数据库名]; *重命名一个表: alter table [表名A] rename to [表名B]; ...
在mysql 中show create table 可以直接查询表的create sql 语句,在postgreSQL 没有这个命令,所以通过function 来实现,代码如下: 前提 定义一个公用的函数:findattname CREATE OR REPLACE FUNCTION findattname(namespace character varying, tablename character varying, ctype character varying) ...
DELETE CASCADE –show you how to automatically delete rows in child tables when the corresponding rows in the parent table are deleted. CHECK constraint –add logic to check value based on a Boolean expression. UNIQUE constraint –ensure that values in a column or a group of columns are unique...