Eli Ribble
97ec2c767d
I have to checkpoint this because I'm trying to get a very complicated multi-layered SQL query for inserting version history into the database and I need to improve it iteratively I've got a new binary that I can use to directly test complex stored procedures. This is to shorted my testing loop.
60 lines
2.2 KiB
SQL
60 lines
2.2 KiB
SQL
-- Prepared statement for conditional insert with versioning for fieldseeker.habitatrelate
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-- Only inserts a new version if data has changed
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PREPARE insert_habitatrelate_versioned(bigint, uuid, uuid, varchar, timestamp, varchar, timestamp, fieldseeker.habitatrelate_habitatrelate_habitattype_2e81cf2f550e400783cf284f3cec3953_enum, timestamp, varchar, timestamp, varchar) AS
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WITH
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-- Get the current latest version of this record
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latest_version AS (
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SELECT * FROM fieldseeker.habitatrelate
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WHERE objectid = $1
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ORDER BY VERSION DESC
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LIMIT 1
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),
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-- Calculate the next version number
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next_version AS (
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SELECT COALESCE(MAX(VERSION) + 1, 1) as version_num
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FROM fieldseeker.habitatrelate
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WHERE objectid = $1
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)
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-- Perform conditional insert
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INSERT INTO fieldseeker.habitatrelate (
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objectid, foreign_id, globalid, created_user, created_date, last_edited_user, last_edited_date, habitattype, creationdate, creator, editdate, editor,
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VERSION
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)
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SELECT
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$1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12,
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v.version_num
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FROM next_version v
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WHERE
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-- Only insert if no record exists yet OR data has changed
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NOT EXISTS (SELECT 1 FROM latest_version lv WHERE
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lv.objectid IS NOT DISTINCT FROM $1 AND
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lv.foreign_id IS NOT DISTINCT FROM $2 AND
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lv.globalid IS NOT DISTINCT FROM $3 AND
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lv.created_user IS NOT DISTINCT FROM $4 AND
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lv.created_date IS NOT DISTINCT FROM $5 AND
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lv.last_edited_user IS NOT DISTINCT FROM $6 AND
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lv.last_edited_date IS NOT DISTINCT FROM $7 AND
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lv.habitattype IS NOT DISTINCT FROM $8 AND
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lv.creationdate IS NOT DISTINCT FROM $9 AND
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lv.creator IS NOT DISTINCT FROM $10 AND
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lv.editdate IS NOT DISTINCT FROM $11 AND
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lv.editor IS NOT DISTINCT FROM $12
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)
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RETURNING *;
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-- Example usage: EXECUTE insert_habitatrelate_versioned(id, value1, value2, ...);
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-- Parameters in order:
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-- $1: OBJECTID (bigint)
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-- $2: FOREIGN_ID (uuid)
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-- $3: GlobalID (uuid)
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-- $4: created_user (varchar)
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-- $5: created_date (timestamp)
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-- $6: last_edited_user (varchar)
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-- $7: last_edited_date (timestamp)
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-- $8: HABITATTYPE (fieldseeker.habitatrelate_habitatrelate_habitattype_2e81cf2f550e400783cf284f3cec3953_enum)
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-- $9: CreationDate (timestamp)
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-- $10: Creator (varchar)
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-- $11: EditDate (timestamp)
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-- $12: Editor (varchar)
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