94 lines
2.0 KiB
SQL
94 lines
2.0 KiB
SQL
-- name: CreateCourse :one
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INSERT INTO courses (program_id, name, description, thumbnail, sort_order)
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SELECT
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$1,
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$2,
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$3,
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$4,
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coalesce((
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SELECT
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max(c.sort_order)
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FROM courses c
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WHERE
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c.program_id = $1), 0) + 1
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RETURNING
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*;
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-- name: GetCourseByID :one
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SELECT *
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FROM courses
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WHERE id = $1;
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-- name: ListCourseIDsByProgram :many
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SELECT
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c.id
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FROM
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courses AS c
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WHERE
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c.program_id = $1
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ORDER BY
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c.id;
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-- name: ListCoursesByProgramID :many
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SELECT
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COUNT(*) OVER () AS total_count,
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c.id,
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c.program_id,
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c.name,
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c.description,
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c.thumbnail,
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c.sort_order,
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c.created_at,
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c.updated_at,
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(
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SELECT
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COUNT(*)::bigint
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FROM
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modules m
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WHERE
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m.course_id = c.id) AS module_count,
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(
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SELECT
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COUNT(*)::bigint
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FROM
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lessons l
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INNER JOIN modules m ON l.module_id = m.id
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WHERE
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m.course_id = c.id) AS lesson_count,
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-- Practices whose parent is the course only (lms_practices.course_id). Excludes
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-- practices linked via module_id or lesson_id, even for modules/lessons in this course.
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(
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SELECT
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COUNT(*)::bigint
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FROM
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lms_practices p
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WHERE
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p.course_id = c.id
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AND p.module_id IS NULL
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AND p.lesson_id IS NULL) AS practice_count
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FROM
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courses c
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WHERE
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c.program_id = $1
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ORDER BY
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c.sort_order ASC,
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c.id ASC
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LIMIT $2 OFFSET $3;
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-- name: UpdateCourse :one
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UPDATE courses
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SET
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name = COALESCE(sqlc.narg('name')::varchar, name),
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description = COALESCE(sqlc.narg('description')::text, description),
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thumbnail = COALESCE(sqlc.narg('thumbnail')::text, thumbnail),
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sort_order = coalesce(sqlc.narg('sort_order')::int, sort_order),
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updated_at = CURRENT_TIMESTAMP
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WHERE
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id = sqlc.arg('id')
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RETURNING
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*;
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-- name: DeleteCourse :exec
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DELETE FROM courses
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WHERE id = $1;
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