fix: remove extra space after BETWEEN _ AND _ expression

src/formatter/ExpressionFormatter.ts

@@ -222,7 +222,7 @@ export default class ExpressionFormatter {
     this.layout = this.formatSubExpression(node.expr1);
     this.layout.add(WS.NO_SPACE, WS.SPACE, this.showNonTabularKw(node.andKw), WS.SPACE);
     this.layout = this.formatSubExpression(node.expr2);
-    this.layout.add(WS.SPACE);
+    this.layout.add(WS.NO_SPACE, WS.SPACE);
   }
 
   private formatCaseExpression(node: CaseExpressionNode) {

test/features/between.ts

@@ -19,7 +19,7 @@ export default function supportsBetween(format: FormatFn) {
 
   it('supports complex expressions inside BETWEEN', () => {
     // Not ideal, but better than crashing
-    expect(format('foo BETWEEN 1+2 AND 3+4')).toBe('foo BETWEEN 1 + 2 AND 3  + 4');
+    expect(format('foo BETWEEN 1+2 AND 3+4')).toBe('foo BETWEEN 1 + 2 AND 3 + 4');
   });
 
   it('supports CASE inside BETWEEN', () => {
@@ -30,6 +30,15 @@ export default function supportsBetween(format: FormatFn) {
     `);
   });
 
+  it('does not add extra space after the BETWEEN expression', () => {
+    expect(format('SELECT CASE WHEN foo BETWEEN 1 AND 2 THEN 3 END')).toBe(dedent`
+      SELECT
+        CASE
+          WHEN foo BETWEEN 1 AND 2 THEN 3
+        END
+    `);
+  });
+
   // Regression test for #534
   it('supports AND after BETWEEN', () => {
     expect(format('SELECT foo BETWEEN 1 AND 2 AND x > 10')).toBe(dedent`

test/features/case.ts

@@ -209,7 +209,7 @@ export default function supportsCase(format: FormatFn) {
     expect(result).toBe(dedent`
     SELECT
       CASE
-        WHEN x1 BETWEEN 1 AND 12  THEN ''
+        WHEN x1 BETWEEN 1 AND 12 THEN ''
       END c1;
   `);
   });