feat(mariadb): support indexHints on mariadb dialect (#11573)

Author: benjamin658

lib/dialects/mariadb/index.js

@@ -43,6 +43,7 @@ MariadbDialect.prototype.supports = _.merge(
       check: false
     },
     indexViaAlter: true,
+    indexHints: true,
     NUMERIC: true,
     GEOMETRY: true,
     JSON: true,

test/unit/dialects/mariadb/query-generator.test.js

@@ -6,6 +6,7 @@ const chai = require('chai'),
   dialect = Support.getTestDialect(),
   _ = require('lodash'),
   Op = require('../../../../lib/operators'),
+  IndexHints = require('../../../../lib/index-hints'),
   QueryGenerator = require('../../../../lib/dialects/mariadb/query-generator');
 
 if (dialect === 'mariadb') {
@@ -764,6 +765,53 @@ if (dialect === 'mariadb') {
           arguments: ['User', 'email'],
           expectation: "SELECT CONSTRAINT_NAME as constraint_name,CONSTRAINT_NAME as constraintName,CONSTRAINT_SCHEMA as constraintSchema,CONSTRAINT_SCHEMA as constraintCatalog,TABLE_NAME as tableName,TABLE_SCHEMA as tableSchema,TABLE_SCHEMA as tableCatalog,COLUMN_NAME as columnName,REFERENCED_TABLE_SCHEMA as referencedTableSchema,REFERENCED_TABLE_SCHEMA as referencedTableCatalog,REFERENCED_TABLE_NAME as referencedTableName,REFERENCED_COLUMN_NAME as referencedColumnName FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE (REFERENCED_TABLE_NAME = 'User' AND REFERENCED_COLUMN_NAME = 'email') OR (TABLE_NAME = 'User' AND COLUMN_NAME = 'email' AND REFERENCED_TABLE_NAME IS NOT NULL)"
         }
+      ],
+
+      selectFromTableFragment: [
+        {
+          arguments: [{}, null, ['*'], '`Project`'],
+          expectation: 'SELECT * FROM `Project`'
+        }, {
+          arguments: [
+            { indexHints: [{ type: IndexHints.USE, values: ['index_project_on_name'] }] },
+            null,
+            ['*'],
+            '`Project`'
+          ],
+          expectation: 'SELECT * FROM `Project` USE INDEX (`index_project_on_name`)'
+        }, {
+          arguments: [
+            { indexHints: [{ type: IndexHints.FORCE, values: ['index_project_on_name'] }] },
+            null,
+            ['*'],
+            '`Project`'
+          ],
+          expectation: 'SELECT * FROM `Project` FORCE INDEX (`index_project_on_name`)'
+        }, {
+          arguments: [
+            { indexHints: [{ type: IndexHints.IGNORE, values: ['index_project_on_name'] }] },
+            null,
+            ['*'],
+            '`Project`'
+          ],
+          expectation: 'SELECT * FROM `Project` IGNORE INDEX (`index_project_on_name`)'
+        }, {
+          arguments: [
+            { indexHints: [{ type: IndexHints.USE, values: ['index_project_on_name', 'index_project_on_name_and_foo'] }] },
+            null,
+            ['*'],
+            '`Project`'
+          ],
+          expectation: 'SELECT * FROM `Project` USE INDEX (`index_project_on_name`,`index_project_on_name_and_foo`)'
+        }, {
+          arguments: [
+            { indexHints: [{ type: 'FOO', values: ['index_project_on_name'] }] },
+            null,
+            ['*'],
+            '`Project`'
+          ],
+          expectation: 'SELECT * FROM `Project`'
+        }
       ]
     };