ArgsList []*Expression `parser:"\"(\" (@@ (\",\" @@)*)?\")\""`
}

// CountFunc represents the COUNT sql function
type CountFunc struct {
	StarArg bool        `parser:" \"COUNT\" \"(\" ( @\"*\"?"`
	ExprArg *Expression `parser:" @@? )! \")\""`
}

// CastFunc represents CAST sql function
type CastFunc struct {
	Expr     *Expression `parser:" \"CAST\" \"(\" @@ "`

## FastAPI全栈模板 - 技术栈和特性

- ⚡ [**FastAPI**](https://fastapi.tiangolo.com) 用于Python后端API.
    - 🧰 [SQLModel](https://sqlmodel.tiangolo.com) 用于Python和SQL数据库的集成（ORM）。
    - 🔍 [Pydantic](https://docs.pydantic.dev) FastAPI的依赖项之一，用于数据验证和配置管理。
    - 💾 [PostgreSQL](https://www.postgresql.org) 作为SQL数据库。
- 🚀 [React](https://react.dev) 用于前端。
    - 💃 使用了TypeScript、hooks、[Vite](https://vitejs.dev)和其他一些现代化的前端技术栈。

 * governing permissions and limitations under the License.
 */
package org.codelibs.core.sql;

import static org.codelibs.core.log.Logger.format;
import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotNull;

import java.sql.ResultSet;
import java.sql.SQLException;

import org.codelibs.core.exception.SQLRuntimeException;
import org.codelibs.core.log.Logger;

/**

			buildNames = append(buildNames, c.Name())
			buildNamesMap[c.Name()] = true
		}

		stmt.AddClause(c)
	}

	stmt.Build(buildNames...)

	if strings.TrimSpace(stmt.SQL.String()) != result {
		t.Errorf("SQL expects %v got %v", result, stmt.SQL.String())
	}

	if !reflect.DeepEqual(stmt.Vars, vars) {
		t.Errorf("Vars expects %+v got %v", stmt.Vars, vars)
	}

import org.codelibs.core.beans.Converter;
import org.codelibs.core.convert.DateConversionUtil;
import org.codelibs.core.convert.StringConversionUtil;
import org.codelibs.core.lang.StringUtil;

/**
 * Converter for SQL dates.
 *
 * @author higa
 */
public class SqlDateConverter implements Converter {

    /**
     * The date pattern.
     */
    protected String pattern;

    /**
     * Constructs an instance.

		Logger: DB.Config.Logger,
		Test: func(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error) {
			sql, _ := fc()
			if strings.HasPrefix(sql, "ALTER TABLE \"migrate_ints\" ALTER COLUMN \"int8\" TYPE smallint") {
				t.Fatalf("shouldn't execute ALTER COLUMN TYPE if such type is already existed in DB schema: sql: %s",
					sql)
			}
		},
	}

	DB.Migrator().DropTable(&MigrateInt{})

		for _, clause := range clauses {
			stmt.AddClause(clause)
		}

		stmt.Build("SELECT", "FROM", "WHERE")
		_ = stmt.SQL.String()
	}
}

func BenchmarkComplexSelect(b *testing.B) {
	user, _ := schema.Parse(&tests.User{}, &sync.Map{}, db.NamingStrategy)

	limit10 := 10
	for i := 0; i < b.N; i++ {

		}
		shiftDelimiter++
	}

	if continuousBacktick > 0 && !selfQuoted {
		writer.WriteString("``")
	}
	writer.WriteByte('`')
}

func (DummyDialector) Explain(sql string, vars ...interface{}) string {
	return logger.ExplainSQL(sql, nil, `"`, vars...)
}

func (DummyDialector) DataTypeOf(*schema.Field) string {
	return ""
}

func (d DummyDialector) Translate(err error) error {
	return d.TranslatedErr

package target

import (
	"database/sql"
	"slices"
	"testing"
)

// TestPostgreSQLRegistration checks if postgres driver
// is registered and fails otherwise.
func TestPostgreSQLRegistration(t *testing.T) {
	var found bool
	if slices.Contains(sql.Drivers(), "postgres") {
		found = true
	}
	if !found {
		t.Fatal("postgres driver not registered")
	}

* Transactions, Nested Transactions, Save Point, RollbackTo to Saved Point
* Context, Prepared Statement Mode, DryRun Mode
* Batch Insert, FindInBatches, Find To Map
* SQL Builder, Upsert, Locking, Optimizer/Index/Comment Hints, NamedArg, Search/Update/Create with SQL Expr
* Composite Primary Key
* Auto Migrations
* Logger
* Extendable, flexible plugin API: Database Resolver (Multiple Databases, Read/Write Splitting) / Prometheus…