func (d *dbBaseSqlite) OperatorSQL(operator string) string {
	return sqliteOperators[operator]
}
get sqlite operator.
package orm
import (
	"database/sql"
	"fmt"
)
var sqliteOperators = map[string]string{
	"exact":       "= ?",
	"iexact":      "LIKE ? ESCAPE '\\'",
	"contains":    "LIKE ? ESCAPE '\\'",
	"icontains":   "LIKE ? ESCAPE '\\'",
	"gt":          "> ?",
	"gte":         ">= ?",
	"lt":          "< ?",
	"lte":         "<= ?",
	"eq":          "= ?",
	"ne":          "!= ?",
	"startswith":  "LIKE ? ESCAPE '\\'",
	"endswith":    "LIKE ? ESCAPE '\\'",
	"istartswith": "LIKE ? ESCAPE '\\'",
	"iendswith":   "LIKE ? ESCAPE '\\'",
}
var sqliteTypes = map[string]string{
	"auto":            "integer NOT NULL PRIMARY KEY AUTOINCREMENT",
	"pk":              "NOT NULL PRIMARY KEY",
	"bool":            "bool",
	"string":          "varchar(%d)",
	"string-text":     "text",
	"time.Time-date":  "date",
	"time.Time":       "datetime",
	"int8":            "tinyint",
	"int16":           "smallint",
	"int32":           "integer",
	"int64":           "bigint",
	"uint8":           "tinyint unsigned",
	"uint16":          "smallint unsigned",
	"uint32":          "integer unsigned",
	"uint64":          "bigint unsigned",
	"float64":         "real",
	"float64-decimal": "decimal",
}
type dbBaseSqlite struct {
	dbBase
}
var _ dbBaser = new(dbBaseSqlite)