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account_history.sql
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account_history.sql
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CREATE FUNCTION grest.account_history (
_address text,
_epoch_no integer DEFAULT NULL
) RETURNS TABLE (
stake_address varchar,
pool_id varchar,
epoch_no bigint,
active_stake text
)
LANGUAGE PLPGSQL
AS
$$
DECLARE
SA_ID integer DEFAULT NULL;
BEGIN
-- Payment address
IF
_address NOT LIKE 'stake%'
THEN
SELECT
STAKE_ADDRESS.VIEW INTO _address
FROM
PUBLIC.TX_OUT
INNER JOIN PUBLIC.STAKE_ADDRESS ON STAKE_ADDRESS.ID = TX_OUT.STAKE_ADDRESS_ID
WHERE
TX_OUT.ADDRESS = _address
LIMIT
1;
END IF;
IF
_epoch_no IS NOT NULL
THEN
RETURN QUERY
SELECT
ACCOUNT_ACTIVE_STAKE_CACHE.stake_address,
ACCOUNT_ACTIVE_STAKE_CACHE.pool_id,
ACCOUNT_ACTIVE_STAKE_CACHE.epoch_no,
ACCOUNT_ACTIVE_STAKE_CACHE.amount::text as active_stake
FROM
GREST.ACCOUNT_ACTIVE_STAKE_CACHE
WHERE
ACCOUNT_ACTIVE_STAKE_CACHE.epoch_no = _epoch_no
AND
ACCOUNT_ACTIVE_STAKE_CACHE.stake_address = _address;
ELSE
RETURN QUERY
SELECT
ACCOUNT_ACTIVE_STAKE_CACHE.stake_address,
ACCOUNT_ACTIVE_STAKE_CACHE.pool_id,
ACCOUNT_ACTIVE_STAKE_CACHE.epoch_no,
ACCOUNT_ACTIVE_STAKE_CACHE.amount::text as active_stake
FROM
GREST.ACCOUNT_ACTIVE_STAKE_CACHE
WHERE
ACCOUNT_ACTIVE_STAKE_CACHE.stake_address = _address;
END IF;
END;
$$;
COMMENT ON FUNCTION grest.account_history IS 'Get the active stake history of an account';