Fixed some regressions introduced with recent refactorings

jOOQ-test/src/org/jooq/test/SQLServerTest.java

@@ -825,8 +825,6 @@ xxxxxx xxxxx xxxxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxx
                 xxxxxxxxxxxxxxxx
                 xxxxxxxxxxxxxxxx
                 xxxxxxxxxxxxxxx
-
-        xxxxx xxx xxxxxxxxxxxxxxxxxxxxx xxxx xxxxxxxxxxx xxxxxxxxx
     x
 
     xxxxx

jOOQ-test/src/org/jooq/test/_/testcases/FunctionTests.java

@@ -920,7 +920,7 @@ extends BaseTest<A, AP, B, S, B2S, BS, L, X, DATE, BOOL, D, T, U, UU, I, IPK, T7
                     .mul(tanh(1.0))
                     .mul(power(coth(1.0), 2).add(0.1));
 
-                record = create().select(t1, t2, t3, t4, t6, t7, t8, t9, tb).fetchOne();
+                record = create().select(t1, t2, t3, t4, t6, t7, t8, t9, ta, tb).fetchOne();
 
                 // Rounding issues are circumvented by using substring()
                 assertNotNull(record);

jOOQ/src/main/java/org/jooq/impl/Power.java

@@ -80,7 +80,7 @@ class Power extends AbstractFunction<BigDecimal> {
                 return DSL.exp(DSL.ln(arg1).mul(arg2));
 
             default:
-                return field("{power}({0})", SQLDataType.NUMERIC, getArguments());
+                return field("{power}({0}, {1})", SQLDataType.NUMERIC, getArguments());
         }
     }
 }

jOOQ/src/main/java/org/jooq/impl/Sqrt.java

@@ -77,7 +77,7 @@ class Sqrt extends AbstractFunction<BigDecimal> {
                 return DSL.power(argument, 0.5);
 
             default:
-                return field("sqrt", SQLDataType.NUMERIC, argument);
+                return field("{sqrt}({0})", SQLDataType.NUMERIC, argument);
         }
     }
 }