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PostreSQL configuration (1 reply)

September 6, 2009, 1:28 am
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Hello,

searching for best way to check how postreSQL service working on web server. Sometimes it shows that it is working, but from user we are getting reports that it doesn't.
We have six servers and need best way to check it regularly.
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It's possible to make a backup of PostgreSQL and to download in Mysql (no replies)

August 26, 2009, 12:06 am
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Hello,

I does not arrive a backup of PostgreSQL and to recover in Mysql.
I have generate a script in PostgreSQL but it function not in Mysql.
How to make?

Excuse me for the syntax errors, I'am french
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Migration of postgresql to mysql (2 replies)

November 1, 2009, 11:47 pm
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Hi,
I want to migrate our database from postgresql to mysql.If you know any migration tool or any methodology then please reply.......
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Migrating PgSQL database to MySQL (slightly different schema though) (1 reply)

November 27, 2009, 12:46 am
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hi,

i would like to know if there is a way i could migrate data from my old PgSQL database to a new MySQL database with a slightly different schema.

i am aware that i can use scripts to convert from pgsql to mysql, however, as i've already mentioned, there has been a slight change in the database schema and i'm also using an old pgsql version.

any advice on how i could migrate my data? Thanks.
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Migration from PgSQL database to MySQL (slightly different schema though) (6 replies)

December 11, 2009, 12:52 am
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hi,

i would like to know if there is a way i could migrate data from my old PgSQL database to a new MySQL database with a slightly different schema.

i am aware that i can use scripts to convert from pgsql to mysql, however, as i've already mentioned, there has been a slight change in the database schema and i'm also using an old pgsql version.

any advice on how i could migrate my data? Thanks.
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Nested query problem - ERROR 1054 (42S22): Unknown column 'users.id' in 'on clause' (no replies)

July 30, 2010, 6:29 am
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I had a pretty long query that worked on Postgres but doesn't work on MySQL. (Very) simplified query reproducing my problem is

SELECT * FROM users WHERE EXISTS (SELECT * FROM questions JOIN answers ON answers.owner_id = users.id);

I results in

ERROR 1054 (42S22): Unknown column 'users.id' in 'on clause'

Note: I can make the simplified query work by changing it to

SELECT * FROM users WHERE EXISTS (SELECT * FROM questions JOIN answers WHERE answers.owner_id = users.id);

However that's not possible for my original query - I'm making LEFT OUTER JOIN with a few conditions and select only records where answers.id IS NULL.

In case it matters I'm using MySQL 5.1.46 on Gentoo Linux. Could you help me to fix this?
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Change from Postgre to MySQL query error (3 replies)

September 6, 2010, 12:18 am
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Hi there,

I tried to switch my application from postgres to mysql. The problem is i don't know how to change below sql query to mysql.

UPDATE datavalue as d1 SET value=d2.value,storedby=d2.storedby,lastupdated=d2.lastupdated,comment=d2.comment,followup=d2.followup FROM datavalue AS d2 WHERE d1.periodid=d2.periodid AND d1.sourceid=d2.sourceid AND d1.lastupdated<d2.lastupdated AND d1.dataelementid=1 AND d1.categoryoptioncomboid=2 AND d2.dataelementid=3 AND d2.categoryoptioncomboid=4;

I was wondering if you guys can help me out.
Thank you very much!
Best regards,
Quang
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PostgreSQL generate_series function (1 reply)

December 16, 2010, 11:29 pm
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Hi, I am migrating from postgresql to mysql and I wanted to know if there is any equivalent function to postgre's generate_series() function in mysql? If not how can I get the same functionality?

Thanks,
Charmie
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How to transfer some data from postgresql db to mysql db? (2 replies)

November 9, 2010, 3:08 pm
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I want to transfer at least posts,threads and members of my another forum postgresql db into my forum in sql db?
How can i do that?
If i completely convert postgresql db to mysql db ,then it is also good..How to do that?
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[OT] Curso a distancia de Administración Postgresql 9.0 Nivel 1 (no replies)

November 7, 2010, 7:55 am
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Se realizará el 27 de Noviembre y 7 de Diciembre un curso a distancia Nivel 1 de Administración de BBDD PostgreSQL 9.0. Tiene una duración de 8hs más 4 hs de consultas repartidas en dos tandas.

Algunos de los temas aproximados a ver son:

Conocimientos Escenciales:
Introducción al Modelo Relacional, Arquitectura Cliente/Servidor
Breves comparaciones, Postgresql
Procesamiento interno y Arquitectura
Instalación
Configuración Básica del servidor y conexiones

Elementos y Administración Básicos:
Herramientas y programas estándar: PgAdmin III y psql
Migraciones de versión
Monitoreo
Mantenimiento
Respaldos
Transacciones
Entendiendo el funcionamiento de la WAL
Control de concurrencias
PITR y nociones de replicación básicas

SQL y lenguajes:
SQL Estándar (DDL y DML), PL/pgsql, objetos y jerarquia
Funciones
Introducción PL/Perl y PL/Pythonu

Elementos de Seguridad:
Seguridad en PostgreSQL
Roles: Usuarios y Grupos
Esquemas y Permisos
Vistas y Reglas
Seguridad de Datos
Comunicaciones y conexiones remotas
Restricciones a través de la configuración
Autenticación y encriptación

Elementos de Performance:
Entendiendo el EXPLAIN
Estadísticas
Afinando servidores dedicados y de desarrollo
Tuning de Consultas SQL
Optimización y técnicas de performance
Conceptos básicos de Full Text Search

Se recomienda que los que asistan tengan conocimientos de SQL básico. Es recomendable que también tengan conocimientos básicos de Linux o Windows (es decir, una plataforma de Sistema Operativo).

El día Viernes 22 de Octubre se dió una breve introducción al curso y a Postgresql 9.0. Si querés ver la charla completa acccede al siguiente link: http://connectpro65421913.emea.acrobat.com/p67117135/

Interesados en más información, enviar un mail a silvia.igon [en] gmail.com o silvia(at)emanuelcalvofranco(at)com(at)ar coordinadora de cursos, referenciando como instructor a Emanuel Calvo Franco.

También estamos organizando una serie de charlas técnicas gratuitas y abiertas. Esten al tanto de las fechas en: http://www.emanuelcalvofranco.com.ar/livestream.html#
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Perl script to parse Postgresql database into MySQL at XX intervals (1 reply)

December 16, 2010, 11:26 pm
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Hey all

I was hoping someone could give me some advice, I have a requirement to "parse" a Postgresql (not migrate) database (single database) into an equivalent MySQL database to be used offline for another purpose, the way that I have it working now is like this:

1) Perl (DBI) script executes every 40mins performs a SELECT on the SOURCE tables and INSERTS into MySQL (DESTINATION)

Problems I have and "not sures":

1) In my script I had to specify ALL of the column names to SELECT on (big long list) and ALL of the column names again to INSERT on (can I not just perform a SELECT * and then INSERT *?? I couldn't get this to work)

2) The SOURCE DATABASE automatically updates once every 30mins, so my script runs just after this is complete (different scheduler, not the same, so we hope they don't overlap - this is not ideal)

3) Must I use SELECT // INSERT? is this the only way? it is very slow (at the Postgresql end :-) ) is there a more efficient method? (I am using filters in my TSQL on the POSTGRESQL end but I dont need to, I only did this to cut down the query time!)

I did consider using ODBC but I'm not seeing any benefit of using this instead of the above.

Thanks all - any input would be greatfully appreciated
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migrating mysql++ to postgres (no replies)

January 3, 2011, 11:34 pm
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I have been assigned a task of migrating mysql++ to postgres by creating a Data Access Layer between the C++ application and the database it is interacting with. I haven't done anything like this ever before so I am totally a novice. These are the exact wordings of my Boss.

"transition of the system from MySQL to postgres, better would be to make the database connection abstract completely, so if a client decides to buy it and connect it to an oracle database, we don't care."

The program currently uses simple queries like:

query << "delete from " << MN << "import";

query << "load data local infile '" << impFile << "' into table " << MN << "import fields terminated by ','";

query << "select count(distinct SLIP), count(distinct SLP_ID) from " << MN << "import";

query << "select TRAD from " << MN << "import where SLIP =" << clslip;





There are no joins etc anywhere involved in the current application and above are the only queries used in the application that are to be converted to postgres.

I am in real trouble .. Please Help me out . i be greatful to you.
regards,
A.Q.Ghouri
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Postgres to mysql (2 replies)

June 2, 2012, 10:06 am
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Hi all.

I'm trying to migrate my db in Postgres in mysql.
But i have a problem
When i must choosing the database doesn't found the "Postgres" .

How i can to migrate Postgres in Mysql using mysql migraton tools?

thank you for help
regards
Francesco
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migration postgres to mysql (3 replies)

April 27, 2012, 9:09 am
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hi ,
i've created the virtual machine with postgres and mysql ,
the wizard of migration tooltoolkit say me that general jdbc ,i download the jar of postgres where should I put ,and there are another parameters such as the connection string ?
can you help me?
Thanks you
Regards
Francesco
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importing database from postgres to mysql (no replies)

June 5, 2012, 10:26 pm
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Hello,

I have designed a database in postgres but now i want to import the same to mysql.When i tried to import i got the following error

"/SQL query:
--
-- PostgreSQL database dump
--
SET statement_timeout =0;
MySQL said:
#1193 - Unknown system variable 'statement_timeout' /"

I dont know what is the error and how to solve it.Plzz help me
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Database Migration: PostgreSQL to MySQL (no replies)

July 24, 2012, 8:37 pm
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Converting Postgre Function to MySql (no replies)

August 12, 2012, 5:03 am
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hi! i need help on converting this postgre function to mysql:


CREATE OR REPLACE FUNCTION ins_Periods() RETURNS trigger AS $$
BEGIN
INSERT INTO Period_Tax_Types (Period_ID, Tax_Type_ID, Period_Tax_Type_Name, Formural, tax_relief, percentage, linear, Employer, Employer_PS, Tax_Type_order, In_Tax, account_number)
SELECT NEW.Period_ID, Tax_Type_ID, Tax_Type_Name, Formural, tax_relief, percentage, linear, Employer, Employer_PS, Tax_Type_order, In_Tax, account_number
FROM Tax_Types
WHERE (active = true);

INSERT INTO Employee_Month (Period_ID, pay_group_ID, Entity_ID, Bank_Branch_ID, Department_Role_ID, Bank_Account, Basic_Pay)
SELECT NEW.Period_ID, 0, Entity_ID, Bank_Branch_ID, Department_Role_ID, Bank_Account, basic_salary
FROM Employees
WHERE (active = true);

PERFORM updTax(employee_month_id, Period_id)
FROM employee_month
WHERE (period_id = NEW.period_id);

RETURN NULL;
END;


thanks in anticipation
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Postgre Challenge (postgreSQL to mYsql both working together. (no replies)

October 10, 2012, 1:57 am
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Hello all, I'm having a problem planning this idea, obviously exist somewhere. I tried searching here but maybe I inserted the wrong arguments...

I got a postgre v8.3 DB server used only for basic storage like, name, surname, email, comments. This is available only for my intranet, so, access denied from outside.

I need to set up forms using this data but my postgreSQL is old and I can't change it or upgrade it(internal polices...)

I'm planning to rent a cPanel with DB. and use that mYsql as my database server.

BUT I need the data from the older PostgreSQL and I need to keep using the old for my actual old systems.

So, this is the question, can I create the mYsql database to work as a mirror? all the data inserted on PostgreSQL automatically go to mYsql and is ready to use it.

The use of this "new data" is only queries to the database to show the specific fields.

I'm not planning to feed the Database through mYsql, only on PosgreSQL.

Can I do that?, do you have the any help for this?

Much appreciated.

Let me know if it is not clear.
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Error occured when "reverse engineer selected schemata" for PostgreSQL 9.2.2 (4 replies)

February 12, 2013, 10:53 am
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Hi,

When I tried migrating data stored on PostgreSQL with the version 9.2.2 to MySQL, I got the following error at the step of "Reverse engineer selected schemata" for both 5.2.45 and 5.2.44 on Mac OS 10.6.8:

Starting...
Connect to source DBMS...
- Connecting...
Connecting to ...
Opening ODBC connection to DSN=LocalPostgreSQLDB...
Connected
Connect to source DBMS done
Reverse engineer selected schemata....
Reverse engineering public from cssmetaselector
- Reverse engineering catalog information
- Preparing...
- Gathered stats for public
Reverse engineering tables from public
- Retrieving table public.static...
Traceback (most recent call last):
File "/Applications/MySQLWorkbench.app/Contents/PlugIns/db_postgresql_re_grt.py", line 335, in reverseEngineer
return PostgresqlReverseEngineering.reverseEngineer(connection, catalog_name, schemata_list, context)
File "/Applications/MySQLWorkbench.app/Contents/PlugIns/db_generic_re_grt.py", line 257, in reverseEngineer
cls.reverseEngineerTables(connection, schema)
File "/Applications/MySQLWorkbench.app/Contents/PlugIns/db_generic_re_grt.py", line 393, in reverseEngineerTables
cls.reverseEngineerTableIndices(connection, table)
File "/Applications/MySQLWorkbench.app/Contents/PlugIns/db_postgresql_re_grt.py", line 114, in reverseEngineerTableIndices
index_rows = cls.execute_query(connection, all_indices_query).fetchall()
File "/Applications/MySQLWorkbench.app/Contents/PlugIns/db_generic_re_grt.py", line 56, in execute_query
return cls.get_connection(connection_object).cursor().execute(query, *args, **kwargs)
pyodbc.Error: ('ODBC data type 1111 is not supported. Cannot read column indkey.', 'HY000')

Traceback (most recent call last):
File "/Applications/MySQLWorkbench.app/Contents/Resources/libraries/workbench/wizard_progress_page_widget.py", line 191, in thread_work
self.func()
File "/Applications/MySQLWorkbench.app/Contents/PlugIns/migration_schema_selection.py", line 160, in task_reveng
self.main.plan.migrationSource.reverseEngineer()
File "/Applications/MySQLWorkbench.app/Contents/PlugIns/migration.py", line 332, in reverseEngineer
self.state.sourceCatalog = self._rev_eng_module.reverseEngineer(self.connection, self.selectedCatalogName, self.selectedSchemataNames, self.state.applicationData)
SystemError: Error("('ODBC data type 1111 is not supported. Cannot read column indkey.', 'HY000')"): error calling Python module function DbPostgresqlRE.reverseEngineer
ERROR: Reverse engineer selected schemata: Error("('ODBC data type 1111 is not supported. Cannot read column indkey.', 'HY000')"): error calling Python module function DbPostgresqlRE.reverseEngineer
Failed

The error above does not give my any clue. It'll be most appreciated if someone can help me with this.

All the best

Xi
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Postgresql -> MySql: Empty Schema Selection (5 replies)

June 6, 2013, 3:24 pm
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Dear all,

Iam trying to migrate my postgresql database to my mysql database.For that Iam using MySQL Workbench. After the source and target selection he didn't fetch a schemata list. On the "Schemata Selection" Page the List is empty.

What could be the reason for that? I didnt see any option could influence that.
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