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insert.go
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insert.go
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package sqls
import (
"strings"
)
type insertStatement struct {
table []string
columns []string
values []string
onConflict []string
doUpdateSet []string
doNothing bool
}
type insertBuilder struct {
builder *sqlBuilder
statement *insertStatement
}
func newInsertBuilder() *insertBuilder {
builder := &insertBuilder{}
builder.builder = newSqlBuilder()
builder.statement = &insertStatement{}
return builder
}
// 启动插入语句并指定要插入的表。
// 此后应跟一个或多个 VALUES()
func INSERT_INTO(v string) *insertBuilder {
s := newInsertBuilder()
s.statement.table = append(s.statement.table, v)
return s
}
// 附加到插入语句。第一个参数是要插入的列,第二个参数是值。
func (s *insertBuilder) VALUES(key string, value string) *insertBuilder {
s.statement.columns = append(s.statement.columns, key)
s.statement.values = append(s.statement.values, value)
return s
}
func (s *insertBuilder) ON_CONFLICT(v string) *insertBuilder {
s.statement.onConflict = append(s.statement.onConflict, v)
return s
}
func (s *insertBuilder) DO_UPDATE_SET(key string, value string) *insertBuilder {
s.statement.doUpdateSet = append(s.statement.doUpdateSet, key+"="+value)
s.statement.doNothing = false
return s
}
func (s *insertBuilder) DO_NOTHING() *insertBuilder {
s.statement.doNothing = true
return s
}
func (s *insertBuilder) Param(v any) string {
return s.builder.Param(v)
}
func (s *insertBuilder) String() string {
var sqlString string
sqlString += s.builder.join("INSERT INTO", "", s.statement.table, "", "")
sqlString += s.builder.join("", "(", s.statement.columns, ", ", ")")
sqlString += s.builder.join("VALUES", "(", s.statement.values, ", ", ")")
if len(s.statement.onConflict) > 0 {
sqlString += s.builder.join("ON CONFLICT", "(", s.statement.onConflict, ", ", ")")
if len(s.statement.doUpdateSet) > 0 && !s.statement.doNothing {
sqlString += s.builder.join("DO UPDATE SET", "", s.statement.doUpdateSet, ", ", "")
} else if s.statement.doNothing {
sqlString += s.builder.join("DO NOTHING", "", []string{}, "", "")
}
}
return strings.Trim(sqlString, " ")
}
func (s *insertBuilder) Params() []any {
return s.builder.Params(s.String())
}