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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
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zongyangleo
@@ -66,7 +66,7 @@ func (pd *PgsqlDialect) pgsqlOnDuplicateStrategySql(duplicateStrategy int, table
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updateColumns = append(updateColumns, fmt.Sprintf("%s = excluded.%s", col, col))
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}
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// 查询唯一键名,拼接冲突sql
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_, keyRes, _ := pd.dc.Query("SELECT constraint_name FROM information_schema.table_constraints WHERE constraint_schema = $1 AND table_name = $2 AND constraint_type in ('PRIMARY KEY', 'UNIQUE') ", pd.currentSchema(), tableName)
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_, keyRes, _ := pd.dc.Query("SELECT constraint_name FROM information_schema.table_constraints WHERE constraint_schema = $1 AND table_name = $2 AND constraint_type in ('PRIMARY KEY', 'UNIQUE') ", pd.dc.Info.CurrentSchema(), tableName)
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if len(keyRes) > 0 {
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for _, re := range keyRes {
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key := anyx.ToString(re["constraint_name"])
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@@ -117,11 +117,6 @@ func (pd *PgsqlDialect) gaussOnDuplicateStrategySql(duplicateStrategy int, table
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return suffix
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}
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// 从连接信息中获取数据库和schema信息
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func (pd *PgsqlDialect) currentSchema() string {
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return pd.dc.Info.CurrentSchema()
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}
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func (pd *PgsqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
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tableName := copy.TableName
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// 生成新表名,为老表明+_copy_时间戳
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@@ -180,189 +175,48 @@ func (pd *PgsqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
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return err
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}
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func (pd *PgsqlDialect) CreateTable(commonColumns []dbi.Column, tableInfo dbi.Table, dropOldTable bool) (int, error) {
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meta := pd.dc.GetMetaData()
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replacer := strings.NewReplacer(";", "", "'", "")
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if dropOldTable {
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_, _ = pd.dc.Exec(fmt.Sprintf("DROP TABLE IF EXISTS %s", tableInfo.TableName))
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func (pd *PgsqlDialect) ToCommonColumn(column *dbi.Column) {
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// 翻译为通用数据库类型
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dataType := column.DataType
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t1 := commonColumnTypeMap[string(dataType)]
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if t1 == "" {
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column.DataType = dbi.CommonTypeVarchar
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column.CharMaxLength = 2000
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} else {
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column.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 := pgsqlColumnTypeMap[dbi.ColumnDataType(ctype)]
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if t1 == "" {
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ctype = "varchar(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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if strings.Contains(strings.ToLower(t1), "int") {
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// 如果是数字，类型后不需要带长度
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ctype = t1
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} else if strings.Contains(strings.ToLower(t1), "char") {
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// 如果是字符串，长度翻倍
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match := bracketsRegexp.FindStringSubmatch(column.ColumnType)
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if len(match) > 1 {
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ctype = fmt.Sprintf("%s(%d)", t1, anyx.ConvInt(match[1])*2)
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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, pd.genColumnBasicSql(column))
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commentTmp := "comment on column %s.%s is '%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, column.TableName, column.ColumnName, comment))
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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 (%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 := "comment on table %s is '%s'"
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tableCommentSql = fmt.Sprintf(commentTmp, tableInfo.TableName, replacer.Replace(tableInfo.TableComment))
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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 := pd.dc.Exec(strings.Join(sqls, ";"))
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return 1, err
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}
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func (pd *PgsqlDialect) genColumnBasicSql(column dbi.Column) string {
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func (pd *PgsqlDialect) ToColumn(commonColumn *dbi.Column) {
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ctype := pgsqlColumnTypeMap[commonColumn.DataType]
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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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// 哪些字段可以指定长度
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if !collx.ArrayAnyMatches([]string{"char", "time", "bit", "num", "decimal"}, ctype) {
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commonColumn.CharMaxLength = 0
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commonColumn.NumPrecision = 0
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} else if strings.Contains(strings.ToLower(ctype), "char") {
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// 如果类型是文本，长度翻倍
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commonColumn.CharMaxLength = commonColumn.CharMaxLength * 2
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}
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}
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}
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func (pd *PgsqlDialect) CreateTable(commonColumns []dbi.Column, tableInfo dbi.Table, dropOldTable bool) (int, error) {
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meta := pd.dc.GetMetaData()
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colName := meta.QuoteIdentifier(column.ColumnName)
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// 如果是自增类型，需要转换为serial
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if column.IsIdentity {
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if column.ColumnType == "int4" {
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column.ColumnType = "serial"
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} else if column.ColumnType == "int2" {
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column.ColumnType = "smallserial"
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} else if column.ColumnType == "int8" {
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column.ColumnType = "bigserial"
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} else {
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column.ColumnType = "bigserial"
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}
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return fmt.Sprintf(" %s %s NOT NULL", colName, column.ColumnType)
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}
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nullAble := ""
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if column.Nullable == "NO" {
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nullAble = " NOT NULL"
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// 如果字段不能为空，则设置默认值
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if column.ColumnDefault == "" {
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if collx.ArrayAnyMatches([]string{"char", "text", "lob"}, strings.ToLower(column.ColumnType)) {
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// 文本默认值为空字符串
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column.ColumnDefault = " "
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} else if collx.ArrayAnyMatches([]string{"int", "num"}, strings.ToLower(column.ColumnType)) {
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// 数字默认值为0
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column.ColumnDefault = "0"
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}
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}
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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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// 如果是文本类型，则默认值不能带括号
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if collx.ArrayAnyMatches([]string{"char", "text", "lob"}, strings.ToLower(column.ColumnType)) {
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column.ColumnDefault = ""
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}
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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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}
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}
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// 如果数据类型是日期时间，则写死默认值函数
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if collx.ArrayAnyMatches([]string{"date", "time"}, strings.ToLower(column.ColumnType)) {
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column.ColumnDefault = "CURRENT_TIMESTAMP"
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}
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if column.ColumnDefault != "" {
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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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}
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}
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}
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columnSql := fmt.Sprintf(" %s %s %s %s ", colName, column.ColumnType, nullAble, defVal)
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return columnSql
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sqlArr := meta.GenerateTableDDL(commonColumns, tableInfo, dropOldTable)
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_, err := pd.dc.Exec(strings.Join(sqlArr, ";"))
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return len(sqlArr), err
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}
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func (pd *PgsqlDialect) 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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// 如果索引名存在，先删除索引
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sqls = append(sqls, fmt.Sprintf("drop index if exists %s.%s", pd.currentSchema(), indexName))
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// 创建索引
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sqls = append(sqls, fmt.Sprintf("CREATE %s INDEX %s on %s.%s(%s)", unique, indexName, pd.currentSchema(), tableInfo.TableName, index.ColumnName))
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if index.IndexComment != "" {
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comments = append(comments, fmt.Sprintf("COMMENT ON INDEX %s.%s IS '%s'", pd.currentSchema(), indexName, index.IndexComment))
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}
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}
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_, err := pd.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 = pd.dc.Exec(strings.Join(comments, ";"))
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}
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sqlArr := pd.dc.GetMetaData().GenerateIndexDDL(indexs, tableInfo)
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_, err := pd.dc.Exec(strings.Join(sqlArr, ";"))
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return err
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}
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