fix(query-generator): handle literal for substring based operators (#12210)

lib/dialects/abstract/query-generator.js

@@ -2593,14 +2593,20 @@ class QueryGenerator {
 
         return this._joinKeyValue(key, value.map(identifier => this.quoteIdentifier(identifier)).join('.'), comparator, options.prefix);
       case Op.startsWith:
-        comparator = this.OperatorMap[Op.like];
-        return this._joinKeyValue(key, this.escape(`${value}%`), comparator, options.prefix);
       case Op.endsWith:
-        comparator = this.OperatorMap[Op.like];
-        return this._joinKeyValue(key, this.escape(`%${value}`), comparator, options.prefix);
       case Op.substring:
         comparator = this.OperatorMap[Op.like];
-        return this._joinKeyValue(key, this.escape(`%${value}%`), comparator, options.prefix);
+
+        if (value instanceof Utils.Literal) {
+          value = value.val;
+        }
+
+        let pattern = `${value}%`;
+
+        if (prop === Op.endsWith) pattern = `%${value}`;
+        if (prop === Op.substring) pattern = `%${value}%`;
+
+        return this._joinKeyValue(key, this.escape(pattern), comparator, options.prefix);
     }
 
     const escapeOptions = {

test/unit/sql/where.test.js

@@ -441,6 +441,13 @@ describe(Support.getTestDialectTeaser('SQL'), () => {
         default: "[username] LIKE 'swagger%'",
         mssql: "[username] LIKE N'swagger%'"
       });
+
+      testsql('username', {
+        [Op.startsWith]: current.literal('swagger')
+      }, {
+        default: "[username] LIKE 'swagger%'",
+        mssql: "[username] LIKE N'swagger%'"
+      });
     });
 
     describe('Op.endsWith', () => {
@@ -450,6 +457,13 @@ describe(Support.getTestDialectTeaser('SQL'), () => {
         default: "[username] LIKE '%swagger'",
         mssql: "[username] LIKE N'%swagger'"
       });
+
+      testsql('username', {
+        [Op.endsWith]: current.literal('swagger')
+      }, {
+        default: "[username] LIKE '%swagger'",
+        mssql: "[username] LIKE N'%swagger'"
+      });
     });
 
     describe('Op.substring', () => {
@@ -459,6 +473,13 @@ describe(Support.getTestDialectTeaser('SQL'), () => {
         default: "[username] LIKE '%swagger%'",
         mssql: "[username] LIKE N'%swagger%'"
       });
+
+      testsql('username', {
+        [Op.substring]: current.literal('swagger')
+      }, {
+        default: "[username] LIKE '%swagger%'",
+        mssql: "[username] LIKE N'%swagger%'"
+      });
     });
 
     describe('Op.between', () => {