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Generate Golang struct (model) from Postgres tables
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WITH models AS ( | |
WITH data AS ( | |
SELECT | |
replace(initcap(table_name::text), '_', '') table_name, | |
replace(initcap(column_name::text), '_', '') column_name, | |
CASE data_type | |
WHEN 'timestamp without time zone' THEN 'time.Time' | |
WHEN 'timestamp with time zone' THEN 'time.Time' | |
WHEN 'boolean' THEN 'bool' | |
-- add your own type converters as needed or it will default to 'string' | |
ELSE 'string' | |
END AS type_info, | |
'`json:"' || column_name ||'"`' AS annotation | |
FROM information_schema.columns | |
WHERE table_schema IN ('information_schema', 'public') | |
ORDER BY table_schema, table_name, ordinal_position | |
) | |
SELECT table_name, STRING_AGG(E'\t' || column_name || E'\t' || type_info || E'\t' || annotation, E'\n') fields | |
FROM data | |
GROUP BY table_name | |
) | |
SELECT 'type ' || table_name || E' struct {\n' || fields || E'\n}' models | |
FROM models ORDER BY 1 |
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psql -h localhost -p 5432 -U postgres --password "DB" < go_struct_from_tables.sql > models.go