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p
WITH
attr AS (
SELECT ia.instrument_id
,MAX(CASE WHEN ia.attribute_name='step_price' THEN ia.attribute_value ELSE NULL END) AS step_price
,MAX(CASE WHEN ia.attribute_name='limit_down' THEN ia.attribute_value ELSE NULL END) AS limit_down
FROM instrument_attributes ia
)
SELECT i.*
,a.step_price
,a.limit_down
FROM instruments i
LEFT JOIN attr a ON i.instrument_id=a.instrument_id
p
MK
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