77 lines
2.5 KiB
MySQL
77 lines
2.5 KiB
MySQL
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{% macro postgres_get_relations () -%}
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{#
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-- in pg_depend, objid is the dependent, refobjid is the referenced object
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-- > a pg_depend entry indicates that the referenced object cannot be
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-- > dropped without also dropping the dependent object.
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#}
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{%- call statement('relations', fetch_result=True) -%}
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with relation as (
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select
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pg_rewrite.ev_class as class,
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pg_rewrite.oid as id
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from pg_rewrite
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),
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class as (
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select
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oid as id,
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relname as name,
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relnamespace as schema,
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relkind as kind
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from pg_class
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),
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dependency as (
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select
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pg_depend.objid as id,
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pg_depend.refobjid as ref
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from pg_depend
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),
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schema as (
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select
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pg_namespace.oid as id,
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pg_namespace.nspname as name
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from pg_namespace
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where nspname != 'information_schema' and nspname not like 'pg\_%'
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),
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referenced as (
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select
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relation.id AS id,
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referenced_class.name ,
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referenced_class.schema ,
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referenced_class.kind
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from relation
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join class as referenced_class on relation.class=referenced_class.id
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where referenced_class.kind in ('r', 'v')
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),
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relationships as (
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select
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referenced.name as referenced_name,
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referenced.schema as referenced_schema_id,
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dependent_class.name as dependent_name,
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dependent_class.schema as dependent_schema_id,
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referenced.kind as kind
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from referenced
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join dependency on referenced.id=dependency.id
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join class as dependent_class on dependency.ref=dependent_class.id
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where
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(referenced.name != dependent_class.name or
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referenced.schema != dependent_class.schema)
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)
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select
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referenced_schema.name as referenced_schema,
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relationships.referenced_name as referenced_name,
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dependent_schema.name as dependent_schema,
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relationships.dependent_name as dependent_name
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from relationships
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join schema as dependent_schema on relationships.dependent_schema_id=dependent_schema.id
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join schema as referenced_schema on relationships.referenced_schema_id=referenced_schema.id
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group by referenced_schema, referenced_name, dependent_schema, dependent_name
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order by referenced_schema, referenced_name, dependent_schema, dependent_name;
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{%- endcall -%}
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{{ return(load_result('relations').table) }}
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{% endmacro %}
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