56 lines
2.4 KiB
MySQL
56 lines
2.4 KiB
MySQL
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-- Internal auxiliar functions to deal with [Camshaft](https://github.com/cartodb/camshaft) cached analysis tables.
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-- This function returns TRUE if a given table name corresponds to a Camshaft cached analysis table
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-- Scope: private.
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CREATE OR REPLACE FUNCTION @extschema@._CDB_IsAnalysisTableName(table_name TEXT)
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RETURNS BOOLEAN
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AS $$
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BEGIN
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RETURN table_name SIMILAR TO '\Aanalysis_[0-9a-f]{10}_[0-9a-f]{40}\Z';
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END;
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$$ LANGUAGE PLPGSQL IMMUTABLE PARALLEL SAFE;
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-- This function returns a relation of Camshaft cached analysis tables in the given schema.
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-- If the schema name parameter is NULL, then tables from all schemas
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-- that may contain user tables are returned.
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-- For each table, the regclass, schema name and table name are returned.
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-- Scope: private.
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CREATE OR REPLACE FUNCTION @extschema@._CDB_AnalysisTablesInSchema(schema_name text DEFAULT NULL)
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RETURNS TABLE(table_regclass REGCLASS, schema_name TEXT, table_name TEXT)
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AS $$
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SELECT * FROM @extschema@._CDB_UserTablesInSchema(schema_name) WHERE @extschema@._CDB_IsAnalysisTableName(table_name);
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$$ LANGUAGE 'sql' STABLE PARALLEL SAFE;
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-- This function returns a relation user tables excluding analysis tables
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-- If the schema name parameter is NULL, then tables from all schemas
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-- that may contain user tables are returned.
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-- For each table, the regclass, schema name and table name are returned.
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-- Scope: private.
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CREATE OR REPLACE FUNCTION @extschema@._CDB_NonAnalysisTablesInSchema(schema_name text DEFAULT NULL)
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RETURNS TABLE(table_regclass REGCLASS, schema_name TEXT, table_name TEXT)
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AS $$
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SELECT * FROM @extschema@._CDB_UserTablesInSchema(schema_name) WHERE Not @extschema@._CDB_IsAnalysisTableName(table_name);
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$$ LANGUAGE 'sql' STABLE PARALLEL SAFE;
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-- Total spaced used up by Camshaft cached analysis tables in the given schema.
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-- Scope: private.
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CREATE OR REPLACE FUNCTION @extschema@._CDB_AnalysisDataSize(schema_name TEXT DEFAULT NULL)
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RETURNS bigint AS
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$$
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DECLARE
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total_size bigint;
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BEGIN
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WITH analysis_tables AS (
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SELECT t.schema_name, t.table_name FROM @extschema@._CDB_AnalysisTablesInSchema(schema_name) t
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)
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SELECT COALESCE(INT8(SUM(@extschema@._CDB_total_relation_size(analysis_tables.schema_name, analysis_tables.table_name))))::int8
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INTO total_size FROM analysis_tables;
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IF total_size IS NOT NULL THEN
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RETURN total_size;
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ELSE
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RETURN 0;
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END IF;
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END;
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$$
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LANGUAGE 'plpgsql' VOLATILE PARALLEL UNSAFE;
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