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https://gitee.com/dromara/mayfly-go
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!109 refactor：ddl生成方式重构，数据类型和长度重构，所有数据库迁移调试
* feat：同步sqlite全量sql * refactor：ddl生成方式重构，数据类型和长度重构，所有数据库迁移调试
This commit is contained in:
zongyangleo
@@ -5,7 +5,6 @@ import (
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"fmt"
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"mayfly-go/internal/db/dbm/dbi"
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"mayfly-go/pkg/logx"
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"mayfly-go/pkg/utils/anyx"
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"mayfly-go/pkg/utils/collx"
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"strings"
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"time"
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@@ -253,200 +252,61 @@ func (md *MssqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
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return err
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}
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// func (md *MssqlDialect) TransColumns(columns []dbi.Column) []dbi.Column {
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// var commonColumns []dbi.Column
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// for _, column := range columns {
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// // 取出当前数据库类型
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// arr := strings.Split(column.ColumnType, "(")
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// ctype := arr[0]
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// // 翻译为通用数据库类型
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// t1 := commonColumnTypeMap[ctype]
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// if t1 == "" {
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// ctype = "nvarchar(2000)"
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// } else {
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// // 回写到列信息
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// if len(arr) > 1 {
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// ctype = t1 + "(" + arr[1]
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// } else {
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// ctype = t1
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// }
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// }
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// column.ColumnType = ctype
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// commonColumns = append(commonColumns, column)
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// }
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// return commonColumns
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// }
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func (md *MssqlDialect) CreateTable(commonColumns []dbi.Column, tableInfo dbi.Table, dropOldTable bool) (int, error) {
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meta := md.dc.GetMetaData()
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replacer := strings.NewReplacer(";", "", "'", "")
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if dropOldTable {
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_, _ = md.dc.Exec(fmt.Sprintf("DROP TABLE IF EXISTS %s", meta.QuoteIdentifier(tableInfo.TableName)))
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func (md *MssqlDialect) ToCommonColumn(dialectColumn *dbi.Column) {
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// 翻译为通用数据库类型
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dataType := dialectColumn.DataType
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t1 := commonColumnTypeMap[string(dataType)]
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if t1 == "" {
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dialectColumn.DataType = dbi.CommonTypeVarchar
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dialectColumn.CharMaxLength = 2000
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} else {
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dialectColumn.DataType = t1
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}
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// 组装建表语句
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createSql := fmt.Sprintf("CREATE TABLE %s (\n", meta.QuoteIdentifier(tableInfo.TableName))
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fields := make([]string, 0)
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pks := make([]string, 0)
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columnComments := make([]string, 0)
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// 把通用类型转换为达梦类型
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for _, column := range commonColumns {
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// 取出当前数据库类型
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arr := strings.Split(column.ColumnType, "(")
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ctype := arr[0]
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// 翻译为通用数据库类型
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t1 := mssqlColumnTypeMap[dbi.ColumnDataType(ctype)]
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if t1 == "" {
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ctype = "nvarchar(2000)"
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} else {
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// 回写到列信息
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if len(arr) > 1 {
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// 如果是int类型不需要指定长度
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if strings.Contains(strings.ToLower(t1), "int") {
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ctype = t1
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} else if collx.ArrayAnyMatches([]string{"float", "number", "decimal"}, strings.ToLower(t1)) {
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// 如果是float，最大长度为38
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match := bracketsRegexp.FindStringSubmatch(column.ColumnType)
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if len(match) > 1 {
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// size翻倍， 防止数据超长报错
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size := anyx.ConvInt(match[1])
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if size >= 38 { // 如果长度超过38
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ctype = t1 + "(38)"
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} else {
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ctype = fmt.Sprintf("%s(%d)", t1, size)
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}
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} else {
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ctype = t1 + "(38)"
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}
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} else if strings.Contains(strings.ToLower(t1), "char") {
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// 如果是字符串类型，长度最大4000，否则修改字段类型为text
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match := bracketsRegexp.FindStringSubmatch(column.ColumnType)
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if len(match) > 1 {
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// size翻倍， 防止数据超长报错
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size := anyx.ConvInt(match[1]) * 2
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if size >= 4000 { // 如果长度超过4000，则替换为text类型
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ctype = "text"
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} else {
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ctype = fmt.Sprintf("%s(%d)", t1, size)
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}
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} else {
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ctype = t1 + "(1000)"
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}
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} else {
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ctype = t1 + "(" + arr[1]
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}
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} else {
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ctype = t1
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}
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}
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column.ColumnType = ctype
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if column.IsPrimaryKey {
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pks = append(pks, meta.QuoteIdentifier(column.ColumnName))
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}
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fields = append(fields, md.genColumnBasicSql(column))
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commentTmp := "EXECUTE sp_addextendedproperty N'MS_Description', N'%s', N'SCHEMA', N'%s', N'TABLE', N'%s', N'COLUMN', N'%s'"
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// 防止注释内含有特殊字符串导致sql出错
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comment := replacer.Replace(column.ColumnComment)
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columnComments = append(columnComments, fmt.Sprintf(commentTmp, comment, md.currentSchema(), column.TableName, column.ColumnName))
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}
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createSql += strings.Join(fields, ",")
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if len(pks) > 0 {
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createSql += fmt.Sprintf(", PRIMARY KEY CLUSTERED (%s)", strings.Join(pks, ","))
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}
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createSql += ")"
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tableCommentSql := ""
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if tableInfo.TableComment != "" {
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commentTmp := "EXECUTE sp_addextendedproperty N'MS_Description', N'%s', N'SCHEMA', N'%s', N'TABLE', N'%s'"
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tableCommentSql = fmt.Sprintf(commentTmp, replacer.Replace(tableInfo.TableComment), md.currentSchema(), tableInfo.TableName)
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}
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columnCommentSql := strings.Join(columnComments, ";")
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sqls := make([]string, 0)
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if createSql != "" {
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sqls = append(sqls, createSql)
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}
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if tableCommentSql != "" {
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sqls = append(sqls, tableCommentSql)
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}
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if columnCommentSql != "" {
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sqls = append(sqls, columnCommentSql)
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}
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_, err := md.dc.Exec(strings.Join(sqls, ";"))
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return 1, err
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}
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func (md *MssqlDialect) genColumnBasicSql(column dbi.Column) string {
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meta := md.dc.GetMetaData()
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colName := meta.QuoteIdentifier(column.ColumnName)
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func (md *MssqlDialect) ToColumn(commonColumn *dbi.Column) {
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ctype := mssqlColumnTypeMap[commonColumn.DataType]
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incr := ""
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if column.IsIdentity {
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incr = " IDENTITY(1,1)"
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}
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if ctype == "" {
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commonColumn.DataType = "varchar"
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commonColumn.CharMaxLength = 2000
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} else {
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commonColumn.DataType = dbi.ColumnDataType(ctype)
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nullAble := ""
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if column.Nullable == "NO" {
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nullAble = " NOT NULL"
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}
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defVal := "" // 默认值需要判断引号，如函数是不需要引号的 // 为了防止跨源函数不支持 当默认值是函数时，不需要设置默认值
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if column.ColumnDefault != "" && !strings.Contains(column.ColumnDefault, "(") {
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// 哪些字段类型默认值需要加引号
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mark := false
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if collx.ArrayAnyMatches([]string{"char", "text", "date", "time", "lob"}, strings.ToLower(column.ColumnType)) {
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// 当数据类型是日期时间，默认值是日期时间函数时，默认值不需要引号
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if collx.ArrayAnyMatches([]string{"date", "time"}, strings.ToLower(column.ColumnType)) &&
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collx.ArrayAnyMatches([]string{"DATE", "TIME"}, strings.ToUpper(column.ColumnDefault)) {
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mark = false
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} else {
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mark = true
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if strings.Contains(strings.ToLower(ctype), "int") {
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// 如果类型是数字，类型后不需要带长度
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commonColumn.CharMaxLength = 0
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commonColumn.NumPrecision = 0
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} else if collx.ArrayAnyMatches([]string{"float", "number", "decimal"}, strings.ToLower(ctype)) {
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// 如果是float，最大长度为38
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if commonColumn.CharMaxLength > 38 {
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commonColumn.CharMaxLength = 38
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}
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}
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if mark {
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defVal = fmt.Sprintf(" DEFAULT '%s'", column.ColumnDefault)
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} else {
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defVal = fmt.Sprintf(" DEFAULT %s", column.ColumnDefault)
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if commonColumn.NumPrecision > 38 {
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commonColumn.NumPrecision = 38
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}
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} else if strings.Contains(strings.ToLower(ctype), "char") {
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// 如果是字符串类型，长度最大4000，否则修改字段类型为text
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if commonColumn.CharMaxLength > 4000 {
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commonColumn.DataType = "text"
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commonColumn.CharMaxLength = 0
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}
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} else if strings.Contains(strings.ToLower(ctype), "text") {
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// 如果是text，取消长度
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commonColumn.CharMaxLength = 0
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}
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}
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}
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columnSql := fmt.Sprintf(" %s %s %s %s %s", colName, column.ColumnType, incr, nullAble, defVal)
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return columnSql
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func (md *MssqlDialect) CreateTable(columns []dbi.Column, tableInfo dbi.Table, dropOldTable bool) (int, error) {
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sqlArr := md.dc.GetMetaData().GenerateTableDDL(columns, tableInfo, dropOldTable)
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_, err := md.dc.Exec(strings.Join(sqlArr, ";"))
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return len(sqlArr), err
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}
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func (md *MssqlDialect) CreateIndex(tableInfo dbi.Table, indexs []dbi.Index) error {
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sqls := make([]string, 0)
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comments := make([]string, 0)
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for _, index := range indexs {
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// 通过字段、表名拼接索引名
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columnName := strings.ReplaceAll(index.ColumnName, "-", "")
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columnName = strings.ReplaceAll(columnName, "_", "")
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colName := strings.ReplaceAll(columnName, ",", "_")
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keyType := "normal"
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unique := ""
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if index.IsUnique {
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keyType = "unique"
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unique = "unique"
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}
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indexName := fmt.Sprintf("%s_key_%s_%s", keyType, tableInfo.TableName, colName)
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sqls = append(sqls, fmt.Sprintf("create %s NONCLUSTERED index %s on %s.%s(%s)", unique, indexName, md.currentSchema(), tableInfo.TableName, index.ColumnName))
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if index.IndexComment != "" {
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comments = append(comments, fmt.Sprintf("EXECUTE sp_addextendedproperty N'MS_Description', N'%s', N'SCHEMA', N'%s', N'TABLE', N'%s', N'INDEX', N'%s'", index.IndexComment, md.currentSchema(), tableInfo.TableName, indexName))
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}
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}
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_, err := md.dc.Exec(strings.Join(sqls, ";"))
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// 添加注释
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if len(comments) > 0 {
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_, err = md.dc.Exec(strings.Join(comments, ";"))
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}
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sqlArr := md.dc.GetMetaData().GenerateIndexDDL(indexs, tableInfo)
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_, err := md.dc.Exec(strings.Join(sqlArr, ";"))
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return err
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}
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