PostgreSQL获取数据库中所有table名:1 2 3 4 5 SELECT tablename FROM pg_tables WHERE tablename NOT LIKE 'pg%' AND tablename NOT LIKE 'sql_%' ORDER BY tablename;PostgreSQL获取数据库中所有table名及table的注解信息:1 2 3 4 5 6 7 8 SELECT tablename, obj_description(relfilenode, 'pg_class...
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...
This PostgreSQL tutorial explains how to use the PostgreSQL ALTER TABLE statement to add a column, modify a column, drop a column, rename a column or rename a table (with syntax and examples).Description The PostgreSQL ALTER TABLE statement is used to add, modify, or drop/delete columns in ...
Set the description property: Dataset description. Overrides: PostgreSqlTableDataset.withDescription(String description) Parameters: description withFolder public PostgreSqlTableDataset withFolder(DatasetFolder folder) Set the folder property: The folder that this Dataset is in. If not specified, Dataset ...
See a detailed description of theCREATE TABLEquery. The table structure can differ from the original PostgreSQL table structure: Column names should be the same as in the original PostgreSQL table, but you can use just some of these columns and in any order. ...
The stated command retrieves some extra information like “storage”, “description”, “access method”, etc. Method 3: Using “information_schema” Postgres supports another handy command that can be executed from any interface like psql or pgAdmin. Use the SELECT command with the “information...
Description The PostgreSQL CREATE TABLE AS statement is used to create a table from an existing table by copying the existing table's columns. It is important to note that when creating a table in this way, the new table will be populated with the records from the existing table (based on...
In the same way, you can get the description of the created table using \d as shown below −postgres=# \d cricketers Table "public.cricketers" Column | Type | Collation | Nullable | Default ---+---+---+---+--- first_name | character varying(255) | | | last_name | character...
Description 获取或设置数据集说明。 (继承自 Dataset) Folder 获取或设置此数据集位于的文件夹。 如果未指定,数据集将显示在根级别。 (继承自 Dataset) LinkedServiceName 获取或设置链接服务引用。 (继承自 Dataset) Parameters 获取或设置数据集的参数。 (继承自 Dataset) PostgreSqlTableDa...
(The description of the way to find the index tuples in B-tree index is not explained here as it is very common and the space here is limited. See the relevant materials.) For example, in Fig. 1.6(b), TID value of the obtained index tuple is ‘(block = 7, Offset = 2)’. It...