Correctly generate code for MySQL cool (#970)

Author: kyleconroy

internal/compiler/output_columns.go

@@ -142,6 +142,7 @@ func outputColumns(qc *QueryCatalog, node ast.Node) ([]*Column, error) {
 							DataType: c.DataType,
 							NotNull:  c.NotNull,
 							IsArray:  c.IsArray,
+							Length:   c.Length,
 						})
 					}
 				}
@@ -321,6 +322,7 @@ func outputColumnRefs(res *ast.ResTarget, tables []*Table, node *ast.ColumnRef)
 					DataType: c.DataType,
 					NotNull:  c.NotNull,
 					IsArray:  c.IsArray,
+					Length:   c.Length,
 				})
 			}
 		}

internal/compiler/resolve.go

@@ -154,6 +154,7 @@ func resolveCatalogRefs(c *catalog.Catalog, rvs []*ast.RangeVar, args []paramRef
 								DataType: dataType(&c.Type),
 								NotNull:  c.IsNotNull,
 								IsArray:  c.IsArray,
+								Length:   c.Length,
 								Table:    table,
 							},
 						})
@@ -295,6 +296,7 @@ func resolveCatalogRefs(c *catalog.Catalog, rvs []*ast.RangeVar, args []paramRef
 						NotNull:  c.IsNotNull,
 						IsArray:  c.IsArray,
 						Table:    &ast.TableName{Schema: schema, Name: rel},
+						Length:   c.Length,
 					},
 				})
 			} else {