We’re able to pull multiple schemas for new Redshift, BigQuery, Snowflake, Athena and PostgreSQL sources. For other data sources, you currently can only have one schema per data source connection in Chartio, so you’d need to add any additional schemas as separate data sources.
As a workaround, you can create custom tables that pull from tables in your other schema(s). Custom tables allow you to write SQL that Chartio inserts directly into Interactive Mode queries. So, you can create a custom table with the following SQL (replacing
table_name with relevant information from your database):
select * from schema_name.table_name
For reference, you can run the following command to view all available tables and views in all schemas (MySQL/PostgreSQL):
select * from information_schema.tables
Reflect multiple schemas
If Chartio supports multiple schemas for your database, you can reflect them into one data source in Chartio. In order to do that, simply leave the Schema Name field in the Connection tab blank.
Note: If you’d like to connect only one of your schemas to Chartio, you can specify the specific schema in the Schema Name field.
Then navigate to the Schema tab and click the Refresh Schema button. Select which schemas you want to reflect into Chartio, then click Apply.
Now you can view your schemas from one data source within Chartio and easily create charts from tables across schemas.
Check out our Manage Schemas page for more information about deleting schemas from Chartio.
How to list all available schemas
Most schemas are defaulted to public unless a specific schema is used. To find out which schema to reflect for your data source, you can run the following query on your data source to list all available schemas; however, not all data sources have this functionality.
select * from pg_namespace;
select schemaname from syscat.schemata
You can leave the schema blank since for MySQL, physically a schema is synonymous with a database.
select USERNAME from SYS.ALL_USERS
select nspname from pg_catalog.pg_namespace
show SCHEMAS [ from catalog ]
select * from sys.schemas
select table_schema from v_catalog.tables