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orm add sqlite3 support, may be support postgres in next commit

This commit is contained in:
slene
2013-08-11 00:15:26 +08:00
parent 9631c663d5
commit 6c41e6dd78
12 changed files with 963 additions and 556 deletions

557
orm/db.go
View File

@ -43,395 +43,8 @@ var (
"isnull": true,
// "search": true,
}
operatorsSQL = map[string]string{
"exact": "= ?",
"iexact": "LIKE ?",
"contains": "LIKE BINARY ?",
"icontains": "LIKE ?",
// "regex": "REGEXP BINARY ?",
// "iregex": "REGEXP ?",
"gt": "> ?",
"gte": ">= ?",
"lt": "< ?",
"lte": "<= ?",
"startswith": "LIKE BINARY ?",
"endswith": "LIKE BINARY ?",
"istartswith": "LIKE ?",
"iendswith": "LIKE ?",
}
)
type dbTable struct {
id int
index string
name string
names []string
sel bool
inner bool
mi *modelInfo
fi *fieldInfo
jtl *dbTable
}
type dbTables struct {
tablesM map[string]*dbTable
tables []*dbTable
mi *modelInfo
base dbBaser
}
func (t *dbTables) set(names []string, mi *modelInfo, fi *fieldInfo, inner bool) *dbTable {
name := strings.Join(names, ExprSep)
if j, ok := t.tablesM[name]; ok {
j.name = name
j.mi = mi
j.fi = fi
j.inner = inner
} else {
i := len(t.tables) + 1
jt := &dbTable{i, fmt.Sprintf("T%d", i), name, names, false, inner, mi, fi, nil}
t.tablesM[name] = jt
t.tables = append(t.tables, jt)
}
return t.tablesM[name]
}
func (t *dbTables) add(names []string, mi *modelInfo, fi *fieldInfo, inner bool) (*dbTable, bool) {
name := strings.Join(names, ExprSep)
if _, ok := t.tablesM[name]; ok == false {
i := len(t.tables) + 1
jt := &dbTable{i, fmt.Sprintf("T%d", i), name, names, false, inner, mi, fi, nil}
t.tablesM[name] = jt
t.tables = append(t.tables, jt)
return jt, true
}
return t.tablesM[name], false
}
func (t *dbTables) get(name string) (*dbTable, bool) {
j, ok := t.tablesM[name]
return j, ok
}
func (t *dbTables) loopDepth(depth int, prefix string, fi *fieldInfo, related []string) []string {
if depth < 0 || fi.fieldType == RelManyToMany {
return related
}
if prefix == "" {
prefix = fi.name
} else {
prefix = prefix + ExprSep + fi.name
}
related = append(related, prefix)
depth--
for _, fi := range fi.relModelInfo.fields.fieldsRel {
related = t.loopDepth(depth, prefix, fi, related)
}
return related
}
func (t *dbTables) parseRelated(rels []string, depth int) {
relsNum := len(rels)
related := make([]string, relsNum)
copy(related, rels)
relDepth := depth
if relsNum != 0 {
relDepth = 0
}
relDepth--
for _, fi := range t.mi.fields.fieldsRel {
related = t.loopDepth(relDepth, "", fi, related)
}
for i, s := range related {
var (
exs = strings.Split(s, ExprSep)
names = make([]string, 0, len(exs))
mmi = t.mi
cansel = true
jtl *dbTable
)
for _, ex := range exs {
if fi, ok := mmi.fields.GetByAny(ex); ok && fi.rel && fi.fieldType != RelManyToMany {
names = append(names, fi.name)
mmi = fi.relModelInfo
jt := t.set(names, mmi, fi, fi.null == false)
jt.jtl = jtl
if fi.reverse {
cansel = false
}
if cansel {
jt.sel = depth > 0
if i < relsNum {
jt.sel = true
}
}
jtl = jt
} else {
panic(fmt.Sprintf("unknown model/table name `%s`", ex))
}
}
}
}
func (t *dbTables) getJoinSql() (join string) {
for _, jt := range t.tables {
if jt.inner {
join += "INNER JOIN "
} else {
join += "LEFT OUTER JOIN "
}
var (
table string
t1, t2 string
c1, c2 string
)
t1 = "T0"
if jt.jtl != nil {
t1 = jt.jtl.index
}
t2 = jt.index
table = jt.mi.table
switch {
case jt.fi.fieldType == RelManyToMany || jt.fi.reverse && jt.fi.reverseFieldInfo.fieldType == RelManyToMany:
c1 = jt.fi.mi.fields.pk.column
for _, ffi := range jt.mi.fields.fieldsRel {
if jt.fi.mi == ffi.relModelInfo {
c2 = ffi.column
break
}
}
default:
c1 = jt.fi.column
c2 = jt.fi.relModelInfo.fields.pk.column
if jt.fi.reverse {
c1 = jt.mi.fields.pk.column
c2 = jt.fi.reverseFieldInfo.column
}
}
join += fmt.Sprintf("`%s` %s ON %s.`%s` = %s.`%s` ", table, t2,
t2, c2, t1, c1)
}
return
}
func (d *dbTables) parseExprs(mi *modelInfo, exprs []string) (index, column, name string, info *fieldInfo, success bool) {
var (
ffi *fieldInfo
jtl *dbTable
mmi = mi
)
num := len(exprs) - 1
names := make([]string, 0)
for i, ex := range exprs {
exist := false
check:
fi, ok := mmi.fields.GetByAny(ex)
if ok {
if num != i {
names = append(names, fi.name)
switch {
case fi.rel:
mmi = fi.relModelInfo
if fi.fieldType == RelManyToMany {
mmi = fi.relThroughModelInfo
}
case fi.reverse:
mmi = fi.reverseFieldInfo.mi
if fi.reverseFieldInfo.fieldType == RelManyToMany {
mmi = fi.reverseFieldInfo.relThroughModelInfo
}
default:
return
}
jt, _ := d.add(names, mmi, fi, fi.null == false)
jt.jtl = jtl
jtl = jt
if fi.rel && fi.fieldType == RelManyToMany {
ex = fi.relModelInfo.name
goto check
}
if fi.reverse && fi.reverseFieldInfo.fieldType == RelManyToMany {
ex = fi.reverseFieldInfo.mi.name
goto check
}
exist = true
} else {
if ffi == nil {
index = "T0"
} else {
index = jtl.index
}
column = fi.column
info = fi
if jtl != nil {
name = jtl.name + ExprSep + fi.name
} else {
name = fi.name
}
switch fi.fieldType {
case RelManyToMany, RelReverseMany:
default:
exist = true
}
}
ffi = fi
}
if exist == false {
index = ""
column = ""
name = ""
success = false
return
}
}
success = index != "" && column != ""
return
}
func (d *dbTables) getCondSql(cond *Condition, sub bool) (where string, params []interface{}) {
if cond == nil || cond.IsEmpty() {
return
}
mi := d.mi
// outFor:
for i, p := range cond.params {
if i > 0 {
if p.isOr {
where += "OR "
} else {
where += "AND "
}
}
if p.isNot {
where += "NOT "
}
if p.isCond {
w, ps := d.getCondSql(p.cond, true)
if w != "" {
w = fmt.Sprintf("( %s) ", w)
}
where += w
params = append(params, ps...)
} else {
exprs := p.exprs
num := len(exprs) - 1
operator := ""
if operators[exprs[num]] {
operator = exprs[num]
exprs = exprs[:num]
}
index, column, _, _, suc := d.parseExprs(mi, exprs)
if suc == false {
panic(fmt.Errorf("unknown field/column name `%s`", strings.Join(p.exprs, ExprSep)))
}
if operator == "" {
operator = "exact"
}
operSql, args := d.base.GetOperatorSql(mi, operator, p.args)
where += fmt.Sprintf("%s.`%s` %s ", index, column, operSql)
params = append(params, args...)
}
}
if sub == false && where != "" {
where = "WHERE " + where
}
return
}
func (d *dbTables) getOrderSql(orders []string) (orderSql string) {
if len(orders) == 0 {
return
}
orderSqls := make([]string, 0, len(orders))
for _, order := range orders {
asc := "ASC"
if order[0] == '-' {
asc = "DESC"
order = order[1:]
}
exprs := strings.Split(order, ExprSep)
index, column, _, _, suc := d.parseExprs(d.mi, exprs)
if suc == false {
panic(fmt.Errorf("unknown field/column name `%s`", strings.Join(exprs, ExprSep)))
}
orderSqls = append(orderSqls, fmt.Sprintf("%s.`%s` %s", index, column, asc))
}
orderSql = fmt.Sprintf("ORDER BY %s ", strings.Join(orderSqls, ", "))
return
}
func (d *dbTables) getLimitSql(offset int64, limit int) (limits string) {
if limit == 0 {
limit = DefaultRowsLimit
}
if limit < 0 {
// no limit
if offset > 0 {
limits = fmt.Sprintf("LIMIT 18446744073709551615 OFFSET %d", offset)
}
} else if offset <= 0 {
limits = fmt.Sprintf("LIMIT %d", limit)
} else {
limits = fmt.Sprintf("LIMIT %d OFFSET %d", limit, offset)
}
return
}
func newDbTables(mi *modelInfo, base dbBaser) *dbTables {
tables := &dbTables{}
tables.tablesM = make(map[string]*dbTable)
tables.mi = mi
tables.base = base
return tables
}
type dbBase struct {
ins dbBaser
}
@ -528,6 +141,8 @@ func (d *dbBase) collectValues(mi *modelInfo, ind reflect.Value, skipAuto bool,
}
func (d *dbBase) PrepareInsert(q dbQuerier, mi *modelInfo) (stmtQuerier, string, error) {
Q := d.ins.TableQuote()
dbcols := make([]string, 0, len(mi.fields.dbcols))
marks := make([]string, 0, len(mi.fields.dbcols))
for _, fi := range mi.fields.fieldsDB {
@ -537,9 +152,13 @@ func (d *dbBase) PrepareInsert(q dbQuerier, mi *modelInfo) (stmtQuerier, string,
}
}
qmarks := strings.Join(marks, ", ")
columns := strings.Join(dbcols, "`,`")
sep := fmt.Sprintf("%s, %s", Q, Q)
columns := strings.Join(dbcols, sep)
query := fmt.Sprintf("INSERT INTO %s%s%s (%s%s%s) VALUES (%s)", Q, mi.table, Q, Q, columns, Q, qmarks)
d.ins.ReplaceMarks(&query)
query := fmt.Sprintf("INSERT INTO `%s` (`%s`) VALUES (%s)", mi.table, columns, qmarks)
stmt, err := q.Prepare(query)
return stmt, query, err
}
@ -563,10 +182,13 @@ func (d *dbBase) Read(q dbQuerier, mi *modelInfo, ind reflect.Value) error {
return ErrMissPK
}
sels := strings.Join(mi.fields.dbcols, "`, `")
Q := d.ins.TableQuote()
sep := fmt.Sprintf("%s, %s", Q, Q)
sels := strings.Join(mi.fields.dbcols, sep)
colsNum := len(mi.fields.dbcols)
query := fmt.Sprintf("SELECT `%s` FROM `%s` WHERE `%s` = ?", sels, mi.table, pkColumn)
query := fmt.Sprintf("SELECT %s%s%s FROM %s%s%s WHERE %s%s%s = ?", Q, sels, Q, Q, mi.table, Q, Q, pkColumn, Q)
refs := make([]interface{}, colsNum)
for i, _ := range refs {
@ -574,6 +196,8 @@ func (d *dbBase) Read(q dbQuerier, mi *modelInfo, ind reflect.Value) error {
refs[i] = &ref
}
d.ins.ReplaceMarks(&query)
row := q.QueryRow(query, pkValue)
if err := row.Scan(refs...); err != nil {
if err == sql.ErrNoRows {
@ -598,14 +222,20 @@ func (d *dbBase) Insert(q dbQuerier, mi *modelInfo, ind reflect.Value) (int64, e
return 0, err
}
Q := d.ins.TableQuote()
marks := make([]string, len(names))
for i, _ := range marks {
marks[i] = "?"
}
qmarks := strings.Join(marks, ", ")
columns := strings.Join(names, "`,`")
query := fmt.Sprintf("INSERT INTO `%s` (`%s`) VALUES (%s)", mi.table, columns, qmarks)
sep := fmt.Sprintf("%s, %s", Q, Q)
qmarks := strings.Join(marks, ", ")
columns := strings.Join(names, sep)
query := fmt.Sprintf("INSERT INTO %s%s%s (%s%s%s) VALUES (%s)", Q, mi.table, Q, Q, columns, Q, qmarks)
d.ins.ReplaceMarks(&query)
if res, err := q.Exec(query, values...); err == nil {
return res.LastInsertId()
@ -624,12 +254,17 @@ func (d *dbBase) Update(q dbQuerier, mi *modelInfo, ind reflect.Value) (int64, e
return 0, err
}
setColumns := strings.Join(setNames, "` = ?, `")
query := fmt.Sprintf("UPDATE `%s` SET `%s` = ? WHERE `%s` = ?", mi.table, setColumns, pkName)
setValues = append(setValues, pkValue)
Q := d.ins.TableQuote()
sep := fmt.Sprintf("%s = ?, %s", Q, Q)
setColumns := strings.Join(setNames, sep)
query := fmt.Sprintf("UPDATE %s%s%s SET %s%s%s = ? WHERE %s%s%s = ?", Q, mi.table, Q, Q, setColumns, Q, Q, pkName, Q)
d.ins.ReplaceMarks(&query)
if res, err := q.Exec(query, setValues...); err == nil {
return res.RowsAffected()
} else {
@ -644,7 +279,11 @@ func (d *dbBase) Delete(q dbQuerier, mi *modelInfo, ind reflect.Value) (int64, e
return 0, ErrMissPK
}
query := fmt.Sprintf("DELETE FROM `%s` WHERE `%s` = ?", mi.table, pkName)
Q := d.ins.TableQuote()
query := fmt.Sprintf("DELETE FROM %s%s%s WHERE %s%s%s = ?", Q, mi.table, Q, Q, pkName, Q)
d.ins.ReplaceMarks(&query)
if res, err := q.Exec(query, pkValue); err == nil {
@ -694,11 +333,24 @@ func (d *dbBase) UpdateBatch(q dbQuerier, qs *querySet, mi *modelInfo, cond *Con
where, args := tables.getCondSql(cond, false)
values = append(values, args...)
join := tables.getJoinSql()
query := fmt.Sprintf("UPDATE `%s` T0 %sSET T0.`%s` = ? %s", mi.table, join, strings.Join(columns, "` = ?, T0.`"), where)
var query string
values = append(values, args...)
Q := d.ins.TableQuote()
if d.ins.SupportUpdateJoin() {
cols := strings.Join(columns, fmt.Sprintf("%s = ?, T0.%s", Q, Q))
query = fmt.Sprintf("UPDATE %s%s%s T0 %sSET T0.%s%s%s = ? %s", Q, mi.table, Q, join, Q, cols, Q, where)
} else {
cols := strings.Join(columns, fmt.Sprintf("%s = ?, %s", Q, Q))
supQuery := fmt.Sprintf("SELECT T0.%s%s%s FROM %s%s%s T0 %s%s", Q, mi.fields.pk.column, Q, Q, mi.table, Q, join, where)
query = fmt.Sprintf("UPDATE %s%s%s SET %s%s%s = ? WHERE %s%s%s IN ( %s )", Q, mi.table, Q, Q, cols, Q, Q, mi.fields.pk.column, Q, supQuery)
}
d.ins.ReplaceMarks(&query)
if res, err := q.Exec(query, values...); err == nil {
return res.RowsAffected()
@ -744,11 +396,15 @@ func (d *dbBase) DeleteBatch(q dbQuerier, qs *querySet, mi *modelInfo, cond *Con
panic("delete operation cannot execute without condition")
}
Q := d.ins.TableQuote()
where, args := tables.getCondSql(cond, false)
join := tables.getJoinSql()
cols := fmt.Sprintf("T0.`%s`", mi.fields.pk.column)
query := fmt.Sprintf("SELECT %s FROM `%s` T0 %s%s", cols, mi.table, join, where)
cols := fmt.Sprintf("T0.%s%s%s", Q, mi.fields.pk.column, Q)
query := fmt.Sprintf("SELECT %s FROM %s%s%s T0 %s%s", cols, Q, mi.table, Q, join, where)
d.ins.ReplaceMarks(&query)
var rs *sql.Rows
if r, err := q.Query(query, args...); err != nil {
@ -773,8 +429,10 @@ func (d *dbBase) DeleteBatch(q dbQuerier, qs *querySet, mi *modelInfo, cond *Con
return 0, nil
}
sql, args := d.ins.GetOperatorSql(mi, "in", args)
query = fmt.Sprintf("DELETE FROM `%s` WHERE `%s` %s", mi.table, mi.fields.pk.column, sql)
sql, args := d.ins.GenerateOperatorSql(mi, "in", args)
query = fmt.Sprintf("DELETE FROM %s%s%s WHERE %s%s%s %s", Q, mi.table, Q, Q, mi.fields.pk.column, Q, sql)
d.ins.ReplaceMarks(&query)
if res, err := q.Exec(query, args...); err == nil {
num, err := res.RowsAffected()
@ -831,24 +489,30 @@ func (d *dbBase) ReadBatch(q dbQuerier, qs *querySet, mi *modelInfo, cond *Condi
offset = 0
}
Q := d.ins.TableQuote()
tables := newDbTables(mi, d.ins)
tables.parseRelated(qs.related, qs.relDepth)
where, args := tables.getCondSql(cond, false)
orderBy := tables.getOrderSql(qs.orders)
limit := tables.getLimitSql(offset, rlimit)
limit := tables.getLimitSql(mi, offset, rlimit)
join := tables.getJoinSql()
colsNum := len(mi.fields.dbcols)
cols := fmt.Sprintf("T0.`%s`", strings.Join(mi.fields.dbcols, "`, T0.`"))
sep := fmt.Sprintf("%s, T0.%s", Q, Q)
cols := fmt.Sprintf("T0.%s%s%s", Q, strings.Join(mi.fields.dbcols, sep), Q)
for _, tbl := range tables.tables {
if tbl.sel {
colsNum += len(tbl.mi.fields.dbcols)
cols += fmt.Sprintf(", %s.`%s`", tbl.index, strings.Join(tbl.mi.fields.dbcols, "`, "+tbl.index+".`"))
sep := fmt.Sprintf("%s, %s.%s", Q, tbl.index, Q)
cols += fmt.Sprintf(", %s.%s%s%s", tbl.index, Q, strings.Join(tbl.mi.fields.dbcols, sep), Q)
}
}
query := fmt.Sprintf("SELECT %s FROM `%s` T0 %s%s%s%s", cols, mi.table, join, where, orderBy, limit)
query := fmt.Sprintf("SELECT %s FROM %s%s%s T0 %s%s%s%s", cols, Q, mi.table, Q, join, where, orderBy, limit)
d.ins.ReplaceMarks(&query)
var rs *sql.Rows
if r, err := q.Query(query, args...); err != nil {
@ -940,7 +604,11 @@ func (d *dbBase) Count(q dbQuerier, qs *querySet, mi *modelInfo, cond *Condition
tables.getOrderSql(qs.orders)
join := tables.getJoinSql()
query := fmt.Sprintf("SELECT COUNT(*) FROM `%s` T0 %s%s", mi.table, join, where)
Q := d.ins.TableQuote()
query := fmt.Sprintf("SELECT COUNT(*) FROM %s%s%s T0 %s%s", Q, mi.table, Q, join, where)
d.ins.ReplaceMarks(&query)
row := q.QueryRow(query, args...)
@ -1014,7 +682,7 @@ func (d *dbBase) getOperatorParams(operator string, args []interface{}) (params
return
}
func (d *dbBase) GetOperatorSql(mi *modelInfo, operator string, args []interface{}) (string, []interface{}) {
func (d *dbBase) GenerateOperatorSql(mi *modelInfo, operator string, args []interface{}) (string, []interface{}) {
sql := ""
params := d.getOperatorParams(operator, args)
@ -1028,7 +696,7 @@ func (d *dbBase) GetOperatorSql(mi *modelInfo, operator string, args []interface
if len(params) > 1 {
panic(fmt.Sprintf("operator `%s` need 1 args not %d", operator, len(params)))
}
sql = operatorsSQL[operator]
sql = d.ins.OperatorSql(operator)
arg := params[0]
switch operator {
case "exact":
@ -1073,13 +741,13 @@ func (d *dbBase) setColsValues(mi *modelInfo, ind *reflect.Value, cols []string,
value, err := d.getValue(fi, val)
if err != nil {
panic(fmt.Sprintf("db value convert failed `%v` %s", val, err.Error()))
panic(fmt.Sprintf("Raw value: `%v` %s", val, err.Error()))
}
_, err = d.setValue(fi, value, &field)
if err != nil {
panic(fmt.Sprintf("db value convert failed `%v` %s", val, err.Error()))
panic(fmt.Sprintf("Raw value: `%v` %s", val, err.Error()))
}
}
}
@ -1090,6 +758,7 @@ func (d *dbBase) getValue(fi *fieldInfo, val interface{}) (interface{}, error) {
}
var value interface{}
var tErr error
var str *StrTo
switch v := val.(type) {
@ -1119,7 +788,8 @@ setValue:
if str != nil {
b, err := str.Bool()
if err != nil {
return nil, err
tErr = err
goto end
}
value = b
}
@ -1140,14 +810,23 @@ setValue:
}
}
if str != nil {
format := format_DateTime
s := str.String()
var format string
if fi.fieldType == TypeDateField {
format = format_Date
if len(s) > 10 {
s = s[:10]
}
} else {
format = format_DateTime
if len(s) > 19 {
s = s[:19]
}
}
s := str.String()
t, err := timeParse(s, format)
if err != nil && s != "0000-00-00" && s != "0000-00-00 00:00:00" {
return nil, err
tErr = err
goto end
}
value = t
}
@ -1173,7 +852,8 @@ setValue:
_, err = str.Uint64()
}
if err != nil {
return nil, err
tErr = err
goto end
}
if fieldType&IsPostiveIntegerField > 0 {
v, _ := str.Uint64()
@ -1196,15 +876,23 @@ setValue:
if str != nil {
v, err := str.Float64()
if err != nil {
return nil, err
tErr = err
goto end
}
value = v
}
case fieldType&IsRelField > 0:
fieldType = fi.relModelInfo.fields.pk.fieldType
fi = fi.relModelInfo.fields.pk
fieldType = fi.fieldType
goto setValue
}
end:
if tErr != nil {
err := fmt.Errorf("convert to `%s` failed, field: %s err: %s", fi.addrValue.Type(), fi.fullName, tErr)
return nil, err
}
return value, nil
}
@ -1275,6 +963,7 @@ setValue:
fd := field.Addr().Interface().(Fielder)
err := fd.SetRaw(value)
if err != nil {
err = fmt.Errorf("converted value `%v` set to Fielder `%s` failed, err: %s", value, fi.fullName, err)
return nil, err
}
}
@ -1311,6 +1000,8 @@ func (d *dbBase) ReadValues(q dbQuerier, qs *querySet, mi *modelInfo, cond *Cond
hasExprs := len(exprs) > 0
Q := d.ins.TableQuote()
if hasExprs {
cols = make([]string, 0, len(exprs))
infos = make([]*fieldInfo, 0, len(exprs))
@ -1319,26 +1010,26 @@ func (d *dbBase) ReadValues(q dbQuerier, qs *querySet, mi *modelInfo, cond *Cond
if suc == false {
panic(fmt.Errorf("unknown field/column name `%s`", ex))
}
cols = append(cols, fmt.Sprintf("%s.`%s` `%s`", index, col, name))
cols = append(cols, fmt.Sprintf("%s.%s%s%s %s%s%s", index, Q, col, Q, Q, name, Q))
infos = append(infos, fi)
}
} else {
cols = make([]string, 0, len(mi.fields.dbcols))
infos = make([]*fieldInfo, 0, len(exprs))
for _, fi := range mi.fields.fieldsDB {
cols = append(cols, fmt.Sprintf("T0.`%s` `%s`", fi.column, fi.name))
cols = append(cols, fmt.Sprintf("T0.%s%s%s %s%s%s", Q, fi.column, Q, Q, fi.name, Q))
infos = append(infos, fi)
}
}
where, args := tables.getCondSql(cond, false)
orderBy := tables.getOrderSql(qs.orders)
limit := tables.getLimitSql(qs.offset, qs.limit)
limit := tables.getLimitSql(mi, qs.offset, qs.limit)
join := tables.getJoinSql()
sels := strings.Join(cols, ", ")
query := fmt.Sprintf("SELECT %s FROM `%s` T0 %s%s%s%s", sels, mi.table, join, where, orderBy, limit)
query := fmt.Sprintf("SELECT %s FROM %s%s%s T0 %s%s%s%s", sels, Q, mi.table, Q, join, where, orderBy, limit)
var rs *sql.Rows
if r, err := q.Query(query, args...); err != nil {
@ -1430,3 +1121,19 @@ func (d *dbBase) ReadValues(q dbQuerier, qs *querySet, mi *modelInfo, cond *Cond
return cnt, nil
}
func (d *dbBase) SupportUpdateJoin() bool {
return true
}
func (d *dbBase) MaxLimit() uint64 {
return 18446744073709551615
}
func (d *dbBase) TableQuote() string {
return "`"
}
func (d *dbBase) ReplaceMarks(query *string) {
// default use `?` as mark, do nothing
}