feat(nocodb): add DATETIME_DIFF logic for sqlite

packages/nocodb/src/lib/db/sql-data-mapper/lib/sql/functionMappings/sqlite.ts

@@ -1,7 +1,12 @@
 import dayjs from 'dayjs';
 import { MapFnArgs } from '../mapFunctionName';
 import commonFns from './commonFns';
+import { convertUnits } from '../helpers/convertUnits';
 import { getWeekdayByText } from '../helpers/formulaFnHelper';
+import {
+  convertToTargetFormat,
+  getDateFormat,
+} from '../../../../../utils/dateTimeUtils';
 
 const sqlite3 = {
   ...commonFns,
@@ -77,7 +82,63 @@ const sqlite3 = {
       END${colAlias}`
     );
   },
-
+  DATETIME_DIFF: ({ fn, knex, pt, colAlias }: MapFnArgs) => {
+    let datetime_expr1 = fn(pt.arguments[0]);
+    let datetime_expr2 = fn(pt.arguments[1]);
+    // JULIANDAY takes YYYY-MM-DD
+    datetime_expr1 = convertToTargetFormat(
+      datetime_expr1,
+      getDateFormat(datetime_expr1),
+      'YYYY-MM-DD'
+    );
+    datetime_expr2 = convertToTargetFormat(
+      datetime_expr2,
+      getDateFormat(datetime_expr2),
+      'YYYY-MM-DD'
+    );
+    const rawUnit = pt.arguments[2]
+      ? fn(pt.arguments[2]).bindings[0]
+      : 'seconds';
+    let sql;
+    const unit = convertUnits(rawUnit, 'sqlite');
+    switch (unit) {
+      case 'seconds':
+        sql = `ROUND((JULIANDAY('${datetime_expr1}') - JULIANDAY('${datetime_expr2}')) * 86400)`;
+        break;
+      case 'minutes':
+        sql = `ROUND((JULIANDAY('${datetime_expr1}') - JULIANDAY('${datetime_expr2}')) * 1440)`;
+        break;
+      case 'hours':
+        sql = `ROUND((JULIANDAY('${datetime_expr1}') - JULIANDAY('${datetime_expr2}')) * 24)`;
+        break;
+      case 'milliseconds':
+        sql = `ROUND((JULIANDAY('${datetime_expr1}') - JULIANDAY('${datetime_expr2}')) * 86400000)`;
+        break;
+      case 'weeks':
+        sql = `ROUND((JULIANDAY('${datetime_expr1}') - JULIANDAY('${datetime_expr2}')) / 7)`;
+        break;
+      case 'months':
+        sql = `(ROUND((JULIANDAY('${datetime_expr1}') - JULIANDAY('${datetime_expr2}')) / 365))
+        * 12 + (ROUND((JULIANDAY('${datetime_expr1}') - JULIANDAY('${datetime_expr2}')) / 365 / 12))`;
+        break;
+      case 'quarters':
+        sql = `
+            ROUND((JULIANDAY('${datetime_expr1}')) / 365 / 4) -
+            ROUND((JULIANDAY('${datetime_expr2}')) / 365 / 4) +
+            (ROUND((JULIANDAY('${datetime_expr1}') - JULIANDAY('${datetime_expr2}')) / 365)) * 4
+        `;
+        break;
+      case 'years':
+        sql = `ROUND((JULIANDAY('${datetime_expr1}') - JULIANDAY('${datetime_expr2}')) / 365)`;
+        break;
+      case 'days':
+        sql = `JULIANDAY('${datetime_expr1}') - JULIANDAY('${datetime_expr2}')`;
+        break;
+      default:
+        sql = '';
+    }
+    return knex.raw(`${sql} ${colAlias}`);
+  },
   WEEKDAY: ({ fn, knex, pt, colAlias }: MapFnArgs) => {
     // strftime('%w', date) - day of week 0 - 6 with Sunday == 0
     // WEEKDAY() returns an index from 0 to 6 for Monday to Sunday