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53 lines
816 B
Markdown
53 lines
816 B
Markdown
# Deleting rows
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```sql
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CREATE TABLE authors (
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id SERIAL PRIMARY KEY,
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bio text NOT NULL
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);
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```
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The parameter syntax varies by database engine:
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**PostgreSQL:**
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```sql
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-- name: DeleteAuthor :exec
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DELETE FROM authors WHERE id = $1;
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```
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**MySQL and SQLite:**
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```sql
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-- name: DeleteAuthor :exec
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DELETE FROM authors WHERE id = ?;
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```
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```go
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package db
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import (
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"context"
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"database/sql"
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)
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type DBTX interface {
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ExecContext(context.Context, string, ...any) (sql.Result, error)
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}
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func New(db DBTX) *Queries {
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return &Queries{db: db}
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}
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type Queries struct {
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db DBTX
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}
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const deleteAuthor = `-- name: DeleteAuthor :exec
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DELETE FROM authors WHERE id = $1
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`
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func (q *Queries) DeleteAuthor(ctx context.Context, id int) error {
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_, err := q.db.ExecContext(ctx, deleteAuthor, id)
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return err
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}
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```
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