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subquery.go
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subquery.go
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package orm
import (
"database/sql"
"strings"
)
const subqueryDefaultName = "sub"
type SubQuery struct {
raw string
bindings []any
recursive bool
dbName string
tableName string
columns []string
dbs []*sql.DB
tx *sql.Tx
err error
unionAll bool
}
func (m SubQuery) Connections() []*sql.DB {
return m.dbs
}
func (m SubQuery) DatabaseName() string {
return m.dbName
}
func (m SubQuery) TableName() string {
if m.tableName != "" {
return m.tableName
}
if m.raw != "" {
return subqueryDefaultName
}
return ""
}
func (m SubQuery) Error() error {
return m.err
}
func (m SubQuery) Sql() string {
params := make([]string, len(m.bindings))
for k, v := range m.bindings {
params[k] = varToString(v)
}
var sqlb strings.Builder
var index = 0
for _, v := range []byte(m.raw) {
if v == '?' {
if len(params) > index {
sqlb.WriteString(params[index])
index++
} else {
break
}
} else {
sqlb.WriteByte(v)
}
}
return sqlb.String()
}