feat: More SQL Syntax Support for SQLite

[hakobera]

This pull request includes multiple SQL Syntax supports for SQLite for #161

Features

• SELECT
  • Support WHERE, GROUP BY, HAVING, LIMIT, OFFSET
  • Support nested SELECT like select_nested_count
• INSERT
  • Support both values and SELECT insert
• UPDATE
  • Support simple update set
• DDL
  • Support CREATE VIEW and DROP VIEW
  • Support bool type
• Function
  • coalesce function

Examples

• authors
• booktest
• ondeck

Also add endtoend test data as much as possible.

Breaking Change

• numeric and decimal are mapped to float64 (currently these are mapped to int64

[russellhaering]

This looks awesome, let me test a little bit but I'm definitely inclined to close out #1686 in favor of this.

[DBarney]

Wow, yeah lets go with this. I just got the Update statement working on my local branch after some work this morning, but this covers all that and more. So nice work @hakobera!

[russellhaering]

Ran this against my (still pretty minimal) codebase and results look great. Its generating identical code for SELECT compared to #1686, identical code for INSERT compared to #1653, plus is generating correct-looking code for UPDATEs which I didn't have a solution for yet.

Closed my PR in favor of this.

[javiercbk]

I executed some tests over a small project and it works!!!.

Unrelated to this PR, but I'll try to fix this small issue

-- name: Insert :exec
INSERT INTO users (uuid, email, phone) VALUES (?, ?, ?);

Generated Go code

func (q *Queries) Insert(ctx context.Context, arg InsertParams) error {
	_, err := q.db.ExecContext(ctx, insert, arg.Uuid, arg.Email, arg.Phone)
	return err
}

Better

func (q *Queries) Insert(ctx context.Context, arg InsertParams) (int64, error) {
	result, err := q.db.ExecContext(ctx, insert, arg.Uuid, arg.Email, arg.Phone)
	if err != nil {
		return 0, err
	}
	return result.LastInsertId()
}

EDIT:

The correct way to do this is

-- name: Insert :execresult
INSERT INTO users (uuid, email, phone) VALUES (?, ?, ?);