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Insert The Data Into the Text File From Postgres Database

Here i'm explained about How to insert the data into the csv file from postgres database.

PRACTICAL 1.

Step1. Just select the table for wchich table do you want to copy
postgres=# select * from batch;
 batch_id |             batch_name              | members 
----------+-------------------------------------+---------
        1 | nijam                               |       1
        2 | nijam                               |       5
        3 | nijam                               |       5
        4 | nijam                               |       5
        4 | nijam                               |       8
(5 rows)
Step2.then give the following command this will insert the data into the csv file from postgres database table.
postgres=# copy batch to '/opt/PostgreSQL/9.3/data/michel.csv' with delimiter ',' CSV header;
COPY 5
step3. just check the file for is it correct or not.
[root@p1 ~]# cat /opt/PostgreSQL/9.3/data/michel.csv
batch_id,batch_name,members
1,nijam                              ,1
2,nijam                              ,5
3,nijam                              ,5
4,nijam                              ,5
4,nijam                              ,8
PRACTICAL 2.
Here also i'm  exlpained same as above example but small different is first i copied table from pg_tables after that i will insert  the data to text nijam2.csvtext file
postgres=# copy (select * from pg_tables) to '/opt/PostgreSQL/9.3/data/nijam2.csv' with delimiter ',' CSV header; 
COPY 83
[root@p1 ~]# cat /opt/PostgreSQL/9.3/data/nijam2.csv
schemaname,tablename,tableowner,tablespace,hasindexes,hasrules,hastriggers
pg_catalog,pg_statistic,postgres,,t,f,f
pg_catalog,pg_type,postgres,,t,f,f
public,t1,postgres,,f,f,f
pg_catalog,pg_authid,postgres,pg_global,t,f,f
pg_catalog,pg_proc,postgres,,t,f,f
pg_catalog,pg_class,postgres,,t,f,f
pg_catalog,pg_user_mapping,postgres,,t,f,f
pg_catalog,pg_attribute,postgres,,t,f,f
pg_catalog,pg_constraint,postgres,,t,f,f
pg_catalog,pg_inherits,postgres,,t,f,f
pg_catalog,pg_index,postgres,,t,f,f
pg_catalog,pg_operator,postgres,,t,f,f
pg_catalog,pg_opfamily,postgres,,t,f,f
pg_catalog,pg_opclass,postgres,,t,f,f
pg_catalog,pg_am,postgres,,t,f,f
pg_catalog,pg_amop,postgres,,t,f,f
pg_catalog,pg_amproc,postgres,,t,f,f
pg_catalog,pg_language,postgres,,t,f,f
pg_catalog,pg_largeobject_metadata,postgres,,t,f,f
pg_catalog,pg_aggregate,postgres,,t,f,f
pg_catalog,pg_database,postgres,pg_global,t,f,f
pg_catalog,pg_trigger,postgres,,t,f,f
pg_catalog,pg_event_trigger,postgres,,t,f,f
pg_catalog,pg_description,postgres,,t,f,f
pg_catalog,pg_cast,postgres,,t,f,f
pg_catalog,pg_enum,postgres,,t,f,f
pg_catalog,pg_conversion,postgres,,t,f,f
pg_catalog,pg_depend,postgres,,t,f,f
pg_catalog,pg_db_role_setting,postgres,pg_global,t,f,f
pg_catalog,pg_tablespace,postgres,pg_global,t,f,f
pg_catalog,pg_pltemplate,postgres,pg_global,t,f,f
pg_catalog,pg_auth_members,postgres,pg_global,t,f,f
pg_catalog,pg_shdepend,postgres,pg_global,t,f,f
pg_catalog,pg_shdescription,postgres,pg_global,t,f,f
pg_catalog,pg_ts_config,postgres,,t,f,f
pg_catalog,pg_ts_config_map,postgres,,t,f,f
pg_catalog,pg_ts_dict,postgres,,t,f,f
pg_catalog,pg_ts_parser,postgres,,t,f,f
pg_catalog,pg_ts_template,postgres,,t,f,f
pg_catalog,pg_extension,postgres,,t,f,f
pg_catalog,pg_foreign_data_wrapper,postgres,,t,f,f
pg_catalog,pg_foreign_server,postgres,,t,f,f
pg_catalog,pg_foreign_table,postgres,,t,f,f
pg_catalog,pg_default_acl,postgres,,t,f,f
pg_catalog,pg_seclabel,postgres,,t,f,f
pg_catalog,pg_shseclabel,postgres,pg_global,t,f,f
pg_catalog,pg_collation,postgres,,t,f,f
pg_catalog,pg_range,postgres,,t,f,f
pg_catalog,pg_largeobject,postgres,,t,f,f
information_schema,sql_implementation_info,postgres,,f,f,f
information_schema,sql_languages,postgres,,f,f,f
information_schema,sql_packages,postgres,,f,f,f
information_schema,sql_parts,postgres,,f,f,f
public,postgres,postgres,,t,f,f
information_schema,sql_sizing_profiles,postgres,,f,f,f
pg_catalog,pg_attrdef,postgres,,t,f,f
public,primtab,u8,,t,f,f
public,films,u8,,t,f,f
public,distributors,u8,,t,f,f
pg_catalog,pg_namespace,postgres,,t,f,f
pg_catalog,pg_rewrite,postgres,,t,f,f
public,k,u8,,t,f,f
public,distributorc,u8,,f,f,f
public,distributorsct,u8,,f,f,f
public,postgres1,postgres,,t,f,f
public,postgres2,postgres,,t,f,f
public,postgres3,postgres,,t,f,f
public,postgres4,postgres,,t,f,f
public,postgres_5,postgres,,t,f,f
public,students,postgres,,t,f,f
public,india,postgres,,t,f,f
information_schema,sql_features,postgres,,f,f,f
information_schema,sql_sizing,postgres,,f,f,f
public,batch,postgres,,t,f,f
public,cellphones,postgres,,t,f,f
public,mobiles,postgres,,t,f,f
public,location,postgres,,t,f,f
public,dept,postgres,,f,f,f
public,products1,postgres,,f,f,f
public,products2,postgres,,f,f,f
public,t7,postgres,,f,f,f
public,village,postgres,,f,f,f
public,emp_d,postgres,,f,f,f






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