mirror of
https://gitee.com/dromara/mayfly-go
synced 2025-11-02 23:40:24 +08:00
547 lines
17 KiB
Go
547 lines
17 KiB
Go
package mssql
|
||
|
||
import (
|
||
"context"
|
||
"database/sql"
|
||
"fmt"
|
||
"mayfly-go/internal/db/dbm/dbi"
|
||
"mayfly-go/pkg/errorx"
|
||
"mayfly-go/pkg/logx"
|
||
"mayfly-go/pkg/utils/anyx"
|
||
"mayfly-go/pkg/utils/collx"
|
||
"regexp"
|
||
"strings"
|
||
"time"
|
||
)
|
||
|
||
const (
|
||
MSSQL_META_FILE = "metasql/mssql_meta.sql"
|
||
MSSQL_DBS_KEY = "MSSQL_DBS"
|
||
MSSQL_DB_SCHEMAS_KEY = "MSSQL_DB_SCHEMAS"
|
||
MSSQL_TABLE_INFO_KEY = "MSSQL_TABLE_INFO"
|
||
MSSQL_INDEX_INFO_KEY = "MSSQL_INDEX_INFO"
|
||
MSSQL_COLUMN_MA_KEY = "MSSQL_COLUMN_MA"
|
||
MSSQL_TABLE_DETAIL_KEY = "MSSQL_TABLE_DETAIL"
|
||
MSSQL_TABLE_INDEX_DDL_KEY = "MSSQL_TABLE_INDEX_DDL"
|
||
)
|
||
|
||
type MssqlDialect struct {
|
||
dc *dbi.DbConn
|
||
}
|
||
|
||
func (md *MssqlDialect) GetDbServer() (*dbi.DbServer, error) {
|
||
_, res, err := md.dc.Query("SELECT @@VERSION as version")
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
ds := &dbi.DbServer{
|
||
Version: anyx.ConvString(res[0]["version"]),
|
||
}
|
||
return ds, nil
|
||
}
|
||
|
||
func (md *MssqlDialect) GetDbNames() ([]string, error) {
|
||
_, res, err := md.dc.Query(dbi.GetLocalSql(MSSQL_META_FILE, MSSQL_DBS_KEY))
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
databases := make([]string, 0)
|
||
for _, re := range res {
|
||
databases = append(databases, anyx.ConvString(re["dbname"]))
|
||
}
|
||
|
||
return databases, nil
|
||
}
|
||
|
||
// 从连接信息中获取数据库和schema信息
|
||
func (md *MssqlDialect) currentSchema() string {
|
||
dbName := md.dc.Info.Database
|
||
schema := ""
|
||
arr := strings.Split(dbName, "/")
|
||
if len(arr) == 2 {
|
||
schema = arr[1]
|
||
}
|
||
return schema
|
||
}
|
||
|
||
// 获取表基础元信息, 如表名等
|
||
func (md *MssqlDialect) GetTables() ([]dbi.Table, error) {
|
||
_, res, err := md.dc.Query(dbi.GetLocalSql(MSSQL_META_FILE, MSSQL_TABLE_INFO_KEY), md.currentSchema())
|
||
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
tables := make([]dbi.Table, 0)
|
||
for _, re := range res {
|
||
tables = append(tables, dbi.Table{
|
||
TableName: anyx.ConvString(re["tableName"]),
|
||
TableComment: anyx.ConvString(re["tableComment"]),
|
||
CreateTime: anyx.ConvString(re["createTime"]),
|
||
TableRows: anyx.ConvInt(re["tableRows"]),
|
||
DataLength: anyx.ConvInt64(re["dataLength"]),
|
||
IndexLength: anyx.ConvInt64(re["indexLength"]),
|
||
})
|
||
}
|
||
return tables, nil
|
||
}
|
||
|
||
// 获取列元信息, 如列名等
|
||
func (md *MssqlDialect) GetColumns(tableNames ...string) ([]dbi.Column, error) {
|
||
dbType := md.dc.Info.Type
|
||
tableName := strings.Join(collx.ArrayMap[string, string](tableNames, func(val string) string {
|
||
return fmt.Sprintf("'%s'", dbType.RemoveQuote(val))
|
||
}), ",")
|
||
|
||
_, res, err := md.dc.Query(fmt.Sprintf(dbi.GetLocalSql(MSSQL_META_FILE, MSSQL_COLUMN_MA_KEY), tableName), md.currentSchema())
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
columns := make([]dbi.Column, 0)
|
||
for _, re := range res {
|
||
columns = append(columns, dbi.Column{
|
||
TableName: anyx.ToString(re["TABLE_NAME"]),
|
||
ColumnName: anyx.ToString(re["COLUMN_NAME"]),
|
||
ColumnType: anyx.ToString(re["COLUMN_TYPE"]),
|
||
ColumnComment: anyx.ToString(re["COLUMN_COMMENT"]),
|
||
Nullable: anyx.ToString(re["NULLABLE"]),
|
||
IsPrimaryKey: anyx.ConvInt(re["IS_PRIMARY_KEY"]) == 1,
|
||
IsIdentity: anyx.ConvInt(re["IS_IDENTITY"]) == 1,
|
||
ColumnDefault: anyx.ToString(re["COLUMN_DEFAULT"]),
|
||
NumScale: anyx.ToString(re["NUM_SCALE"]),
|
||
})
|
||
}
|
||
return columns, nil
|
||
}
|
||
|
||
// 获取表主键字段名，不存在主键标识则默认第一个字段
|
||
func (md *MssqlDialect) GetPrimaryKey(tablename string) (string, error) {
|
||
columns, err := md.GetColumns(tablename)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
if len(columns) == 0 {
|
||
return "", errorx.NewBiz("[%s] 表不存在", tablename)
|
||
}
|
||
|
||
for _, v := range columns {
|
||
if v.IsPrimaryKey {
|
||
return v.ColumnName, nil
|
||
}
|
||
}
|
||
|
||
return columns[0].ColumnName, nil
|
||
}
|
||
|
||
func (md *MssqlDialect) getTableIndexWithPK(tableName string) ([]dbi.Index, error) {
|
||
_, res, err := md.dc.Query(dbi.GetLocalSql(MSSQL_META_FILE, MSSQL_INDEX_INFO_KEY), md.currentSchema(), tableName)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
indexs := make([]dbi.Index, 0)
|
||
for _, re := range res {
|
||
indexs = append(indexs, dbi.Index{
|
||
IndexName: anyx.ConvString(re["indexName"]),
|
||
ColumnName: anyx.ConvString(re["columnName"]),
|
||
IndexType: anyx.ConvString(re["indexType"]),
|
||
IndexComment: anyx.ConvString(re["indexComment"]),
|
||
IsUnique: anyx.ConvInt(re["isUnique"]) == 1,
|
||
SeqInIndex: anyx.ConvInt(re["seqInIndex"]),
|
||
})
|
||
}
|
||
// 把查询结果以索引名分组，多个索引字段以逗号连接
|
||
result := make([]dbi.Index, 0)
|
||
key := ""
|
||
for _, v := range indexs {
|
||
// 当前的索引名
|
||
in := v.IndexName
|
||
if key == in {
|
||
// 索引字段已根据名称和字段顺序排序，故取最后一个即可
|
||
i := len(result) - 1
|
||
// 同索引字段以逗号连接
|
||
result[i].ColumnName = result[i].ColumnName + "," + v.ColumnName
|
||
} else {
|
||
key = in
|
||
result = append(result, v)
|
||
}
|
||
}
|
||
return indexs, nil
|
||
}
|
||
|
||
// 获取表索引信息
|
||
func (md *MssqlDialect) GetTableIndex(tableName string) ([]dbi.Index, error) {
|
||
indexs, _ := md.getTableIndexWithPK(tableName)
|
||
result := make([]dbi.Index, 0)
|
||
// 过滤掉主键索引,主键索引名为PK__开头的
|
||
for _, v := range indexs {
|
||
in := v.IndexName
|
||
if strings.HasPrefix(in, "PK__") {
|
||
continue
|
||
}
|
||
}
|
||
return result, nil
|
||
}
|
||
|
||
func (md MssqlDialect) CopyTableDDL(tableName string, newTableName string) (string, error) {
|
||
if newTableName == "" {
|
||
newTableName = tableName
|
||
}
|
||
|
||
// 根据列信息生成建表语句
|
||
var builder strings.Builder
|
||
var commentBuilder strings.Builder
|
||
|
||
// 查询表名和表注释, 设置表注释
|
||
_, res, err := md.dc.Query(dbi.GetLocalSql(MSSQL_META_FILE, MSSQL_TABLE_DETAIL_KEY), md.currentSchema(), tableName)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
tableComment := ""
|
||
if len(res) > 0 {
|
||
tableComment = anyx.ToString(res[0]["tableComment"])
|
||
if tableComment != "" {
|
||
// 注释转义单引号
|
||
tableComment = strings.ReplaceAll(tableComment, "'", "\\'")
|
||
commentBuilder.WriteString(fmt.Sprintf("\nEXEC sp_addextendedproperty N'MS_Description', N'%s', N'SCHEMA', N'%s', N'TABLE',N'%s';\n", tableComment, md.currentSchema(), newTableName))
|
||
}
|
||
}
|
||
|
||
baseTable := fmt.Sprintf("%s.%s", md.dc.Info.Type.QuoteIdentifier(md.currentSchema()), md.dc.Info.Type.QuoteIdentifier(newTableName))
|
||
|
||
// 查询列信息
|
||
columns, err := md.GetColumns(tableName)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
|
||
builder.WriteString(fmt.Sprintf("CREATE TABLE %s (\n", baseTable))
|
||
pks := make([]string, 0)
|
||
for i, v := range columns {
|
||
nullAble := "NULL"
|
||
if v.Nullable == "NO" {
|
||
nullAble = "NOT NULL"
|
||
}
|
||
builder.WriteString(fmt.Sprintf("\t[%s] %s %s", v.ColumnName, v.ColumnType, nullAble))
|
||
if v.IsIdentity {
|
||
builder.WriteString(" IDENTITY(1,11)")
|
||
}
|
||
if v.ColumnDefault != "" {
|
||
builder.WriteString(fmt.Sprintf(" DEFAULT %s", v.ColumnDefault))
|
||
}
|
||
if v.IsPrimaryKey {
|
||
pks = append(pks, fmt.Sprintf("[%s]", v.ColumnName))
|
||
}
|
||
if i < len(columns)-1 {
|
||
builder.WriteString(",")
|
||
}
|
||
builder.WriteString("\n")
|
||
}
|
||
// 设置主键
|
||
if len(pks) > 0 {
|
||
builder.WriteString(fmt.Sprintf("\tCONSTRAINT PK_%s PRIMARY KEY ( %s )", newTableName, strings.Join(pks, ",")))
|
||
}
|
||
builder.WriteString("\n);\n")
|
||
|
||
// 设置字段注释
|
||
for _, v := range columns {
|
||
if v.ColumnComment != "" {
|
||
// 注释转义单引号
|
||
v.ColumnComment = strings.ReplaceAll(v.ColumnComment, "'", "\\'")
|
||
commentBuilder.WriteString(fmt.Sprintf("\nEXEC sp_addextendedproperty N'MS_Description', N'%s', N'SCHEMA', N'%s', N'TABLE',N'%s', N'COLUMN', N'%s';\n", v.ColumnComment, md.currentSchema(), newTableName, v.ColumnName))
|
||
}
|
||
}
|
||
|
||
// 设置索引
|
||
indexs, err := md.GetTableIndex(tableName)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
for _, v := range indexs {
|
||
builder.WriteString(fmt.Sprintf("\nCREATE NONCLUSTERED INDEX [%s] ON %s (%s);\n", v.IndexName, baseTable, v.ColumnName))
|
||
// 设置索引注释
|
||
if v.IndexComment != "" {
|
||
// 注释转义单引号
|
||
v.IndexComment = strings.ReplaceAll(v.IndexComment, "'", "\\'")
|
||
commentBuilder.WriteString(fmt.Sprintf("\nEXEC sp_addextendedproperty N'MS_Description', N'%s', N'SCHEMA', N'%s', N'TABLE',N'%s', N'INDEX', N'%s';\n", v.IndexComment, md.currentSchema(), newTableName, v.IndexName))
|
||
}
|
||
}
|
||
return builder.String() + commentBuilder.String(), nil
|
||
}
|
||
|
||
// 获取建表ddl
|
||
func (md *MssqlDialect) GetTableDDL(tableName string) (string, error) {
|
||
return md.CopyTableDDL(tableName, "")
|
||
}
|
||
|
||
func (md *MssqlDialect) WalkTableRecord(tableName string, walkFn dbi.WalkQueryRowsFunc) error {
|
||
return md.dc.WalkQueryRows(context.Background(), fmt.Sprintf("SELECT * FROM %s", tableName), walkFn)
|
||
}
|
||
|
||
func (md *MssqlDialect) GetSchemas() ([]string, error) {
|
||
_, res, err := md.dc.Query(dbi.GetLocalSql(MSSQL_META_FILE, MSSQL_DB_SCHEMAS_KEY))
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
schemas := make([]string, 0)
|
||
for _, re := range res {
|
||
schemas = append(schemas, anyx.ConvString(re["SCHEMA_NAME"]))
|
||
}
|
||
return schemas, nil
|
||
}
|
||
|
||
// GetDbProgram 获取数据库程序模块，用于数据库备份与恢复
|
||
func (md *MssqlDialect) GetDbProgram() (dbi.DbProgram, error) {
|
||
return nil, fmt.Errorf("该数据库类型不支持数据库备份与恢复: %v", md.dc.Info.Type)
|
||
}
|
||
|
||
func (md *MssqlDialect) BatchInsert(tx *sql.Tx, tableName string, columns []string, values [][]any, duplicateStrategy int) (int64, error) {
|
||
|
||
if duplicateStrategy == dbi.DuplicateStrategyUpdate {
|
||
return md.batchInsertMerge(tx, tableName, columns, values, duplicateStrategy)
|
||
}
|
||
|
||
return md.batchInsertSimple(tx, tableName, columns, values, duplicateStrategy)
|
||
}
|
||
|
||
func (md *MssqlDialect) batchInsertSimple(tx *sql.Tx, tableName string, columns []string, values [][]any, duplicateStrategy int) (int64, error) {
|
||
schema := md.currentSchema()
|
||
ignoreDupSql := ""
|
||
if duplicateStrategy == dbi.DuplicateStrategyIgnore {
|
||
// ALTER TABLE dbo.TEST ADD CONSTRAINT uniqueRows UNIQUE (ColA, ColB, ColC, ColD) WITH (IGNORE_DUP_KEY = ON)
|
||
indexs, _ := md.getTableIndexWithPK(tableName)
|
||
// 收集唯一索引涉及到的字段
|
||
uniqueColumns := make([]string, 0)
|
||
for _, index := range indexs {
|
||
if index.IsUnique {
|
||
cols := strings.Split(index.ColumnName, ",")
|
||
for _, col := range cols {
|
||
if !collx.ArrayContains(uniqueColumns, col) {
|
||
uniqueColumns = append(uniqueColumns, col)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
if len(uniqueColumns) > 0 {
|
||
// 设置忽略重复键
|
||
ignoreDupSql = fmt.Sprintf("ALTER TABLE %s.%s ADD CONSTRAINT uniqueRows UNIQUE (%s) WITH (IGNORE_DUP_KEY = {sign})", schema, tableName, strings.Join(uniqueColumns, ","))
|
||
_, _ = md.dc.TxExec(tx, strings.ReplaceAll(ignoreDupSql, "{sign}", "ON"))
|
||
}
|
||
}
|
||
|
||
// 生成占位符字符串：如：(?,?)
|
||
// 重复字符串并用逗号连接
|
||
repeated := strings.Repeat("?,", len(columns))
|
||
// 去除最后一个逗号，占位符由括号包裹
|
||
placeholder := fmt.Sprintf("(%s)", strings.TrimSuffix(repeated, ","))
|
||
|
||
// 重复占位符字符串n遍
|
||
repeated = strings.Repeat(placeholder+",", len(values))
|
||
// 去除最后一个逗号
|
||
placeholder = strings.TrimSuffix(repeated, ",")
|
||
|
||
baseTable := fmt.Sprintf("%s.%s", md.dc.Info.Type.QuoteIdentifier(schema), md.dc.Info.Type.QuoteIdentifier(tableName))
|
||
|
||
sqlStr := fmt.Sprintf("insert into %s (%s) values %s", baseTable, strings.Join(columns, ","), placeholder)
|
||
// 执行批量insert sql
|
||
// 把二维数组转为一维数组
|
||
var args []any
|
||
for _, v := range values {
|
||
args = append(args, v...)
|
||
}
|
||
|
||
// 设置允许填充自增列之后，显示指定列名可以插入自增列
|
||
identityInsertOn := fmt.Sprintf("SET IDENTITY_INSERT [%s].[%s] ON", schema, tableName)
|
||
|
||
res, err := md.dc.TxExec(tx, fmt.Sprintf("%s %s", identityInsertOn, sqlStr), args...)
|
||
|
||
// 执行完之后，设置忽略重复键
|
||
if ignoreDupSql != "" {
|
||
_, _ = md.dc.TxExec(tx, strings.ReplaceAll(ignoreDupSql, "{sign}", "OFF"))
|
||
}
|
||
return res, err
|
||
}
|
||
|
||
func (md *MssqlDialect) batchInsertMerge(tx *sql.Tx, tableName string, columns []string, values [][]any, duplicateStrategy int) (int64, error) {
|
||
schema := md.currentSchema()
|
||
dbType := md.dc.Info.Type
|
||
|
||
// 收集MERGE 语句的 ON 子句条件
|
||
caseSqls := make([]string, 0)
|
||
pkCols := make([]string, 0)
|
||
|
||
// 查询取出自增列字段, merge update不能修改自增列
|
||
identityCols := make([]string, 0)
|
||
cols, err := md.GetColumns(tableName)
|
||
for _, col := range cols {
|
||
if col.IsIdentity {
|
||
identityCols = append(identityCols, col.ColumnName)
|
||
}
|
||
if col.IsPrimaryKey {
|
||
pkCols = append(pkCols, col.ColumnName)
|
||
name := dbType.QuoteIdentifier(col.ColumnName)
|
||
caseSqls = append(caseSqls, fmt.Sprintf(" T1.%s = T2.%s ", name, name))
|
||
}
|
||
}
|
||
if len(pkCols) == 0 {
|
||
return md.batchInsertSimple(tx, tableName, columns, values, duplicateStrategy)
|
||
}
|
||
// 重复数据处理策略
|
||
insertVals := make([]string, 0)
|
||
upds := make([]string, 0)
|
||
insertCols := make([]string, 0)
|
||
// 源数据占位sql
|
||
phs := make([]string, 0)
|
||
for _, column := range columns {
|
||
if !collx.ArrayContains(identityCols, dbType.RemoveQuote(column)) {
|
||
upds = append(upds, fmt.Sprintf("T1.%s = T2.%s", column, column))
|
||
}
|
||
insertCols = append(insertCols, fmt.Sprintf("%s", column))
|
||
insertVals = append(insertVals, fmt.Sprintf("T2.%s", column))
|
||
phs = append(phs, fmt.Sprintf("? %s", column))
|
||
}
|
||
|
||
// 把二维数组转为一维数组
|
||
var args []any
|
||
tmp := fmt.Sprintf("select %s", strings.Join(phs, ","))
|
||
t2s := make([]string, 0)
|
||
for _, v := range values {
|
||
args = append(args, v...)
|
||
t2s = append(t2s, tmp)
|
||
}
|
||
t2 := strings.Join(t2s, " UNION ALL ")
|
||
|
||
sqlTemp := "MERGE INTO " + dbType.QuoteIdentifier(schema) + "." + dbType.QuoteIdentifier(tableName) + " T1 USING (" + t2 + ") T2 ON " + strings.Join(caseSqls, " AND ")
|
||
sqlTemp += "WHEN NOT MATCHED THEN INSERT (" + strings.Join(insertCols, ",") + ") VALUES (" + strings.Join(insertVals, ",") + ") "
|
||
sqlTemp += "WHEN MATCHED THEN UPDATE SET " + strings.Join(upds, ",")
|
||
|
||
// 设置允许填充自增列之后，显示指定列名可以插入自增列
|
||
identityInsertOn := fmt.Sprintf("SET IDENTITY_INSERT [%s].[%s] ON", schema, tableName)
|
||
|
||
// 执行merge sql,必须要以分号结尾
|
||
res, err := md.dc.TxExec(tx, fmt.Sprintf("%s %s;", identityInsertOn, sqlTemp), args...)
|
||
|
||
if err != nil {
|
||
logx.Errorf("执行sql失败：%s, sql: [ %s ]", err.Error(), sqlTemp)
|
||
}
|
||
return res, err
|
||
}
|
||
|
||
func (md *MssqlDialect) GetDataConverter() dbi.DataConverter {
|
||
return converter
|
||
}
|
||
|
||
var (
|
||
// 数字类型
|
||
numberRegexp = regexp.MustCompile(`(?i)int|double|float|number|decimal|byte|bit`)
|
||
// 日期时间类型
|
||
datetimeRegexp = regexp.MustCompile(`(?i)datetime|timestamp`)
|
||
// 日期类型
|
||
dateRegexp = regexp.MustCompile(`(?i)date`)
|
||
// 时间类型
|
||
timeRegexp = regexp.MustCompile(`(?i)time`)
|
||
|
||
converter = new(DataConverter)
|
||
)
|
||
|
||
type DataConverter struct {
|
||
}
|
||
|
||
func (dc *DataConverter) GetDataType(dbColumnType string) dbi.DataType {
|
||
if numberRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeNumber
|
||
}
|
||
// 日期时间类型
|
||
if datetimeRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeDateTime
|
||
}
|
||
// 日期类型
|
||
if dateRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeDate
|
||
}
|
||
// 时间类型
|
||
if timeRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeTime
|
||
}
|
||
return dbi.DataTypeString
|
||
}
|
||
|
||
func (dc *DataConverter) FormatData(dbColumnValue any, dataType dbi.DataType) string {
|
||
return anyx.ToString(dbColumnValue)
|
||
}
|
||
|
||
func (dc *DataConverter) ParseData(dbColumnValue any, dataType dbi.DataType) any {
|
||
// 如果dataType是datetime而dbColumnValue是string类型，则需要转换为time.Time类型
|
||
_, ok := dbColumnValue.(string)
|
||
if dataType == dbi.DataTypeDateTime && ok {
|
||
res, _ := time.Parse(time.RFC3339, anyx.ToString(dbColumnValue))
|
||
return res
|
||
}
|
||
if dataType == dbi.DataTypeDate && ok {
|
||
res, _ := time.Parse(time.DateOnly, anyx.ToString(dbColumnValue))
|
||
return res
|
||
}
|
||
if dataType == dbi.DataTypeTime && ok {
|
||
res, _ := time.Parse(time.TimeOnly, anyx.ToString(dbColumnValue))
|
||
return res
|
||
}
|
||
return dbColumnValue
|
||
}
|
||
|
||
func (md *MssqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
|
||
|
||
schema := md.currentSchema()
|
||
|
||
// 生成新表名,为老表明+_copy_时间戳
|
||
newTableName := copy.TableName + "_copy_" + time.Now().Format("20060102150405")
|
||
|
||
// 复制建表语句
|
||
ddl, err := md.CopyTableDDL(copy.TableName, newTableName)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
|
||
// 执行建表
|
||
_, err = md.dc.Exec(ddl)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
// 复制数据
|
||
if copy.CopyData {
|
||
go func() {
|
||
// 查询所有的列
|
||
columns, err := md.GetColumns(copy.TableName)
|
||
if err != nil {
|
||
logx.Warnf("复制表[%s]数据失败: %s", copy.TableName, err.Error())
|
||
return
|
||
}
|
||
// 取出每列名, 需要显示指定列名插入数据
|
||
columnNames := make([]string, 0)
|
||
hasIdentity := false
|
||
for _, v := range columns {
|
||
columnNames = append(columnNames, fmt.Sprintf("[%s]", v.ColumnName))
|
||
if v.IsIdentity {
|
||
hasIdentity = true
|
||
}
|
||
|
||
}
|
||
columnsSql := strings.Join(columnNames, ",")
|
||
|
||
// 复制数据
|
||
// 设置允许填充自增列之后，显示指定列名可以插入自增列
|
||
identityInsertOn := ""
|
||
if hasIdentity {
|
||
identityInsertOn = fmt.Sprintf("SET IDENTITY_INSERT [%s].[%s] ON", schema, newTableName)
|
||
}
|
||
_, err = md.dc.Exec(fmt.Sprintf(" %s INSERT INTO [%s].[%s] (%s) SELECT * FROM [%s].[%s]", identityInsertOn, schema, newTableName, columnsSql, schema, copy.TableName))
|
||
if err != nil {
|
||
logx.Warnf("复制表[%s]数据失败: %s", copy.TableName, err.Error())
|
||
}
|
||
}()
|
||
}
|
||
|
||
return err
|
||
}
|