我能夠成功模擬查詢以從一張表中進行選擇，如下所示：sqlMock.ExpectQuery("^SELECT DISTINCT (.+) FROM myTable1, myTable2").        WillReturnRows(myResultRows)但我無法模擬以下查詢來檢查我的 postgres 數(shù)據(jù)庫中是否存在該表：SELECT EXISTS        ( SELECT 1        FROM information_schema.tables        WHERE table_schema = 'public'           AND table_name = 'myTable3' );組合：    existsRows := sqlmock.NewRows([]string{"exists"}).        AddRow(true)和    slMock.ExpectQuery("^SELECT EXISTS").        WillReturnRows(existsRows)我SELECT 1也嘗試過嘲笑，但得到了完全相同的錯誤：time="2019-09-27T15:49:41-07:00" level=panic msg="db query" error="call to Query 'SELECT EXISTS\n\t\t( SELECT 1\n\t\tFROM information_schema.tables\n\t\tWHERE table_schema = 'public'\n\t\t   AND table_name = 'myTable3' );' with args [], was not expected, next expectation is: ExpectedExec => expecting Exec or ExecContext which......我正在使用的包：import (    "database/sql"    "db"    "os"    "testing"    // not explicitly called    _ "github.com/denisenkom/go-mssqldb"    _ "github.com/lib/pq"    "github.com/DATA-DOG/go-sqlmock"    "github.com/sirupsen/logrus")任何想法或指示表示贊賞。我在網上找不到相關的例子