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emit proper column information for explain prepared statements

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This commit is contained in:
Nikita Sivukhin
2025-10-07 12:28:55 +04:00
parent f78103cafa
commit bd1013d62f
3 changed files with 127 additions and 0 deletions
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92
bindings/javascript/packages/wasm/promise.test.ts
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@@ -1,6 +1,97 @@
import { expect, test } from 'vitest'
import { connect, Database } from './promise-default.js'
test('explain', async () => {
const db = await connect(":memory:");
const stmt = db.prepare("EXPLAIN SELECT 1");
expect(stmt.columns()).toEqual([
{
"name": "addr",
"type": "INTEGER",
},
{
"name": "opcode",
"type": "TEXT",
},
{
"name": "p1",
"type": "INTEGER",
},
{
"name": "p2",
"type": "INTEGER",
},
{
"name": "p3",
"type": "INTEGER",
},
{
"name": "p4",
"type": "INTEGER",
},
{
"name": "p5",
"type": "INTEGER",
},
{
"name": "comment",
"type": "TEXT",
},
].map(x => ({ ...x, column: null, database: null, table: null })));
expect(await stmt.all()).toEqual([
{
"addr": 0,
"comment": "Start at 3",
"opcode": "Init",
"p1": 0,
"p2": 3,
"p3": 0,
"p4": "",
"p5": 0,
},
{
"addr": 1,
"comment": "output=r[1]",
"opcode": "ResultRow",
"p1": 1,
"p2": 1,
"p3": 0,
"p4": "",
"p5": 0,
},
{
"addr": 2,
"comment": "",
"opcode": "Halt",
"p1": 0,
"p2": 0,
"p3": 0,
"p4": "",
"p5": 0,
},
{
"addr": 3,
"comment": "r[1]=1",
"opcode": "Integer",
"p1": 1,
"p2": 1,
"p3": 0,
"p4": "",
"p5": 0,
},
{
"addr": 4,
"comment": "",
"opcode": "Goto",
"p1": 0,
"p2": 1,
"p3": 0,
"p4": "",
"p5": 0,
},
]);
})
test('in-memory db', async () => {
const db = await connect(":memory:");
await db.exec("CREATE TABLE t(x)");
@@ -10,6 +101,7 @@ test('in-memory db', async () => {
expect(rows).toEqual([{ x: 1 }, { x: 3 }]);
})
test('implicit connect', async () => {
const db = new Database(':memory:');
const defer = db.prepare("SELECT * FROM t");