mirror of
https://gitee.com/dromara/mayfly-go
synced 2025-11-04 00:10:25 +08:00
feat: 小问题修复
This commit is contained in:
meilin.huang
@@ -485,248 +485,3 @@ func getDsn(d *entity.Db, db string) string {
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func CloseDb(dbId uint64, db string) {
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dbCache.Delete(GetDbCacheKey(dbId, db))
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}
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// -----------------------------------元数据-------------------------------------------
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// 数据库元信息接口（表、列等元信息）
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type DbMetadata interface {
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// 获取表基础元信息, 如表名等
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GetTables() []map[string]interface{}
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// 获取列元信息, 如列名等
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GetColumns(tableNames ...string) []map[string]interface{}
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// 获取表主键字段名，默认第一个字段
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GetPrimaryKey(tablename string) string
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// 获取表信息，比GetTables获取更详细的表信息
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GetTableInfos() []map[string]interface{}
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// 获取表索引信息
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GetTableIndex(tableName string) []map[string]interface{}
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// 获取建表ddl
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GetCreateTableDdl(tableName string) []map[string]interface{}
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}
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// 默认每次查询列元信息数量
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const DEFAULT_COLUMN_SIZE = 2000
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// ---------------------------------- mysql元数据 -----------------------------------
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const (
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// mysql 表信息元数据
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MYSQL_TABLE_MA = `SELECT table_name tableName, engine, table_comment tableComment,
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create_time createTime from information_schema.tables
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WHERE table_schema = (SELECT database()) LIMIT 2000`
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// mysql 表信息
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MYSQL_TABLE_INFO = `SELECT table_name tableName, table_comment tableComment, table_rows tableRows,
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data_length dataLength, index_length indexLength, create_time createTime
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FROM information_schema.tables
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WHERE table_schema = (SELECT database()) LIMIT 2000`
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// mysql 索引信息
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MYSQL_INDEX_INFO = `SELECT index_name indexName, column_name columnName, index_type indexType,
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SEQ_IN_INDEX seqInIndex, INDEX_COMMENT indexComment
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FROM information_schema.STATISTICS
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WHERE table_schema = (SELECT database()) AND table_name = '%s' LIMIT 500`
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// mysql 列信息元数据
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MYSQL_COLUMN_MA = `SELECT table_name tableName, column_name columnName, column_type columnType,
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column_comment columnComment, column_key columnKey, extra, is_nullable nullable from information_schema.columns
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WHERE table_name in (%s) AND table_schema = (SELECT database()) ORDER BY tableName, ordinal_position LIMIT %d, %d`
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// mysql 列信息元数据总数
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MYSQL_COLOUMN_MA_COUNT = `SELECT COUNT(*) maNum from information_schema.columns
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WHERE table_name in (%s) AND table_schema = (SELECT database())`
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)
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type MysqlMetadata struct {
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di *DbInstance
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}
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// 获取表基础元信息, 如表名等
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func (mm *MysqlMetadata) GetTables() []map[string]interface{} {
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_, res, _ := mm.di.SelectData(MYSQL_TABLE_MA)
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return res
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}
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// 获取列元信息, 如列名等
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func (mm *MysqlMetadata) GetColumns(tableNames ...string) []map[string]interface{} {
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var sql, tableName string
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for i := 0; i < len(tableNames); i++ {
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if i != 0 {
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tableName = tableName + ", "
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}
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tableName = tableName + "'" + tableNames[i] + "'"
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}
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pageNum := 1
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// 如果大于一个表，则统计列数并分页获取
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if len(tableNames) > 1 {
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countSql := fmt.Sprintf(MYSQL_COLOUMN_MA_COUNT, tableName)
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_, countRes, _ := mm.di.SelectData(countSql)
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maCount := 0
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// 查询出所有列信息总数，手动分页获取所有数据
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if count64, is64 := countRes[0]["maNum"].(int64); is64 {
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maCount = int(count64)
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} else {
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maCount = countRes[0]["maNum"].(int)
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}
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// 计算需要查询的页数
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pageNum = maCount / DEFAULT_COLUMN_SIZE
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if maCount%DEFAULT_COLUMN_SIZE > 0 {
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pageNum++
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}
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}
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res := make([]map[string]interface{}, 0)
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for index := 0; index < pageNum; index++ {
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sql = fmt.Sprintf(MYSQL_COLUMN_MA, tableName, index*DEFAULT_COLUMN_SIZE, DEFAULT_COLUMN_SIZE)
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_, result, err := mm.di.SelectData(sql)
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biz.ErrIsNilAppendErr(err, "获取数据库列信息失败: %s")
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res = append(res, result...)
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}
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return res
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}
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// 获取表主键字段名，默认第一个字段
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func (mm *MysqlMetadata) GetPrimaryKey(tablename string) string {
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return mm.GetColumns(tablename)[0]["columnName"].(string)
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}
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// 获取表信息，比GetTableMetedatas获取更详细的表信息
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func (mm *MysqlMetadata) GetTableInfos() []map[string]interface{} {
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_, res, _ := mm.di.SelectData(MYSQL_TABLE_INFO)
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return res
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}
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// 获取表索引信息
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func (mm *MysqlMetadata) GetTableIndex(tableName string) []map[string]interface{} {
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_, res, _ := mm.di.SelectData(fmt.Sprintf(MYSQL_INDEX_INFO, tableName))
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return res
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}
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// 获取建表ddl
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func (mm *MysqlMetadata) GetCreateTableDdl(tableName string) []map[string]interface{} {
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_, res, _ := mm.di.SelectData(fmt.Sprintf("show create table %s ", tableName))
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return res
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}
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// ---------------------------------- pgsql元数据 -----------------------------------
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const (
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// postgres 表信息元数据
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PGSQL_TABLE_MA = `SELECT obj_description(c.oid) AS "tableComment", c.relname AS "tableName" FROM pg_class c
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JOIN pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = (select current_schema()) AND c.reltype > 0`
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PGSQL_TABLE_INFO = `SELECT obj_description(c.oid) AS "tableComment", c.relname AS "tableName" FROM pg_class c
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JOIN pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = (select current_schema()) AND c.reltype > 0`
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PGSQL_INDEX_INFO = `SELECT indexname AS "indexName", indexdef AS "indexComment"
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FROM pg_indexes WHERE schemaname = (select current_schema()) AND tablename = '%s'`
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PGSQL_COLUMN_MA = `SELECT
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C.relname AS "tableName",
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A.attname AS "columnName",
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concat_ws ( '', t.typname, SUBSTRING ( format_type ( a.atttypid, a.atttypmod ) FROM '\(.*\)' ) ) AS "columnType",
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d.description AS "columnComment"
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FROM
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pg_attribute a LEFT JOIN pg_description d ON d.objoid = a.attrelid
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AND d.objsubid = A.attnum
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LEFT JOIN pg_class c ON A.attrelid = c.oid
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LEFT JOIN pg_namespace pn ON c.relnamespace = pn.oid
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LEFT JOIN pg_type t ON a.atttypid = t.oid
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WHERE
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A.attnum >= 0
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AND pn.nspname = (select current_schema())
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AND C.relname in (%s)
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ORDER BY
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C.relname DESC,
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A.attnum ASC
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OFFSET %d LIMIT %d
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`
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PGSQL_COLUMN_MA_COUNT = `SELECT COUNT(*) "maNum"
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FROM
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pg_attribute a LEFT JOIN pg_description d ON d.objoid = a.attrelid
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AND d.objsubid = A.attnum
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LEFT JOIN pg_class c ON A.attrelid = c.oid
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LEFT JOIN pg_namespace pn ON c.relnamespace = pn.oid
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LEFT JOIN pg_type t ON a.atttypid = t.oid
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WHERE
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A.attnum >= 0
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AND pn.nspname = (select current_schema())
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AND C.relname in (%s)
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`
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)
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type PgsqlMetadata struct {
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di *DbInstance
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}
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// 获取表基础元信息, 如表名等
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func (pm *PgsqlMetadata) GetTables() []map[string]interface{} {
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_, res, _ := pm.di.SelectData(PGSQL_TABLE_MA)
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return res
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}
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// 获取列元信息, 如列名等
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func (pm *PgsqlMetadata) GetColumns(tableNames ...string) []map[string]interface{} {
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var sql, tableName string
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for i := 0; i < len(tableNames); i++ {
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if i != 0 {
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tableName = tableName + ", "
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}
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tableName = tableName + "'" + tableNames[i] + "'"
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}
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pageNum := 1
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// 如果大于一个表，则统计列数并分页获取
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if len(tableNames) > 1 {
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countSql := fmt.Sprintf(PGSQL_COLUMN_MA_COUNT, tableName)
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_, countRes, _ := pm.di.SelectData(countSql)
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maCount := 0
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// 查询出所有列信息总数，手动分页获取所有数据
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if count64, is64 := countRes[0]["maNum"].(int64); is64 {
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maCount = int(count64)
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} else {
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maCount = countRes[0]["maNum"].(int)
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}
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// 计算需要查询的页数
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pageNum = maCount / DEFAULT_COLUMN_SIZE
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if maCount%DEFAULT_COLUMN_SIZE > 0 {
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pageNum++
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}
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}
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res := make([]map[string]interface{}, 0)
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for index := 0; index < pageNum; index++ {
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sql = fmt.Sprintf(PGSQL_COLUMN_MA, tableName, index*DEFAULT_COLUMN_SIZE, DEFAULT_COLUMN_SIZE)
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_, result, err := pm.di.SelectData(sql)
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biz.ErrIsNilAppendErr(err, "获取数据库列信息失败: %s")
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res = append(res, result...)
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}
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return res
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}
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// 获取表主键字段名，默认第一个字段
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func (pm *PgsqlMetadata) GetPrimaryKey(tablename string) string {
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return pm.GetColumns(tablename)[0]["columnName"].(string)
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}
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// 获取表信息，比GetTables获取更详细的表信息
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func (pm *PgsqlMetadata) GetTableInfos() []map[string]interface{} {
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_, res, _ := pm.di.SelectData(PGSQL_TABLE_INFO)
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return res
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}
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// 获取表索引信息
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func (pm *PgsqlMetadata) GetTableIndex(tableName string) []map[string]interface{} {
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_, res, _ := pm.di.SelectData(fmt.Sprintf(PGSQL_INDEX_INFO, tableName))
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return res
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}
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// 获取建表ddl
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func (mm *PgsqlMetadata) GetCreateTableDdl(tableName string) []map[string]interface{} {
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return nil
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}
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29
server/internal/db/application/meta.go
Normal file
29
server/internal/db/application/meta.go
Normal file
@@ -0,0 +1,29 @@
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package application
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// -----------------------------------元数据-------------------------------------------
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// 数据库元信息接口（表、列等元信息）
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// 所有数据查出来直接用map接收，注意map的key需要统一
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type DbMetadata interface {
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// 获取表基础元信息
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// 表名: tableName, 备注: tableComment
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GetTables() []map[string]interface{}
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// 获取指定表名的所有列元信息
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// 表名: tableName, 列名: columnName, 列类型: columnType, 备注: columnComment, 是否可为null: nullable, 其他信息: extra
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GetColumns(tableNames ...string) []map[string]interface{}
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// 获取表主键字段名，目前默认第一个字段
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GetPrimaryKey(tablename string) string
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// 获取表信息，比GetTables获取更详细的表信息
|
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GetTableInfos() []map[string]interface{}
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|
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// 获取表索引信息
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GetTableIndex(tableName string) []map[string]interface{}
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// 获取建表ddl
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GetCreateTableDdl(tableName string) []map[string]interface{}
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}
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// 默认每次查询列元信息数量
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const DEFAULT_COLUMN_SIZE = 2000
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112
server/internal/db/application/mysql_meta.go
Normal file
112
server/internal/db/application/mysql_meta.go
Normal file
@@ -0,0 +1,112 @@
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package application
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import (
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"fmt"
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"mayfly-go/pkg/biz"
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)
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// ---------------------------------- mysql元数据 -----------------------------------
|
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const (
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// mysql 表信息元数据
|
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MYSQL_TABLE_MA = `SELECT table_name tableName, engine, table_comment tableComment,
|
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create_time createTime from information_schema.tables
|
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WHERE table_schema = (SELECT database()) LIMIT 2000`
|
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|
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// mysql 表信息
|
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MYSQL_TABLE_INFO = `SELECT table_name tableName, table_comment tableComment, table_rows tableRows,
|
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data_length dataLength, index_length indexLength, create_time createTime
|
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FROM information_schema.tables
|
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WHERE table_schema = (SELECT database()) LIMIT 2000`
|
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|
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// mysql 索引信息
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MYSQL_INDEX_INFO = `SELECT index_name indexName, column_name columnName, index_type indexType,
|
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SEQ_IN_INDEX seqInIndex, INDEX_COMMENT indexComment
|
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FROM information_schema.STATISTICS
|
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WHERE table_schema = (SELECT database()) AND table_name = '%s' LIMIT 500`
|
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|
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// mysql 列信息元数据
|
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MYSQL_COLUMN_MA = `SELECT table_name tableName, column_name columnName, column_type columnType,
|
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column_comment columnComment, column_key columnKey, extra, is_nullable nullable from information_schema.columns
|
||||
WHERE table_name in (%s) AND table_schema = (SELECT database()) ORDER BY tableName, ordinal_position LIMIT %d, %d`
|
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|
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// mysql 列信息元数据总数
|
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MYSQL_COLOUMN_MA_COUNT = `SELECT COUNT(*) maNum from information_schema.columns
|
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WHERE table_name in (%s) AND table_schema = (SELECT database())`
|
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)
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|
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type MysqlMetadata struct {
|
||||
di *DbInstance
|
||||
}
|
||||
|
||||
// 获取表基础元信息, 如表名等
|
||||
func (mm *MysqlMetadata) GetTables() []map[string]interface{} {
|
||||
_, res, _ := mm.di.SelectData(MYSQL_TABLE_MA)
|
||||
return res
|
||||
}
|
||||
|
||||
// 获取列元信息, 如列名等
|
||||
func (mm *MysqlMetadata) GetColumns(tableNames ...string) []map[string]interface{} {
|
||||
var sql, tableName string
|
||||
for i := 0; i < len(tableNames); i++ {
|
||||
if i != 0 {
|
||||
tableName = tableName + ", "
|
||||
}
|
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tableName = tableName + "'" + tableNames[i] + "'"
|
||||
}
|
||||
|
||||
pageNum := 1
|
||||
// 如果大于一个表，则统计列数并分页获取
|
||||
if len(tableNames) > 1 {
|
||||
countSql := fmt.Sprintf(MYSQL_COLOUMN_MA_COUNT, tableName)
|
||||
_, countRes, _ := mm.di.SelectData(countSql)
|
||||
maCount := 0
|
||||
// 查询出所有列信息总数，手动分页获取所有数据
|
||||
if count64, is64 := countRes[0]["maNum"].(int64); is64 {
|
||||
maCount = int(count64)
|
||||
} else {
|
||||
maCount = countRes[0]["maNum"].(int)
|
||||
}
|
||||
|
||||
// 计算需要查询的页数
|
||||
pageNum = maCount / DEFAULT_COLUMN_SIZE
|
||||
if maCount%DEFAULT_COLUMN_SIZE > 0 {
|
||||
pageNum++
|
||||
}
|
||||
}
|
||||
|
||||
res := make([]map[string]interface{}, 0)
|
||||
for index := 0; index < pageNum; index++ {
|
||||
sql = fmt.Sprintf(MYSQL_COLUMN_MA, tableName, index*DEFAULT_COLUMN_SIZE, DEFAULT_COLUMN_SIZE)
|
||||
_, result, err := mm.di.SelectData(sql)
|
||||
biz.ErrIsNilAppendErr(err, "获取数据库列信息失败: %s")
|
||||
res = append(res, result...)
|
||||
}
|
||||
return res
|
||||
}
|
||||
|
||||
// 获取表主键字段名，默认第一个字段
|
||||
func (mm *MysqlMetadata) GetPrimaryKey(tablename string) string {
|
||||
columns := mm.GetColumns(tablename)
|
||||
if len(columns) == 0 {
|
||||
panic(biz.NewBizErr(fmt.Sprintf("[%s] 表不存在", tablename)))
|
||||
}
|
||||
return columns[0]["columnName"].(string)
|
||||
}
|
||||
|
||||
// 获取表信息，比GetTableMetedatas获取更详细的表信息
|
||||
func (mm *MysqlMetadata) GetTableInfos() []map[string]interface{} {
|
||||
_, res, _ := mm.di.SelectData(MYSQL_TABLE_INFO)
|
||||
return res
|
||||
}
|
||||
|
||||
// 获取表索引信息
|
||||
func (mm *MysqlMetadata) GetTableIndex(tableName string) []map[string]interface{} {
|
||||
_, res, _ := mm.di.SelectData(fmt.Sprintf(MYSQL_INDEX_INFO, tableName))
|
||||
return res
|
||||
}
|
||||
|
||||
// 获取建表ddl
|
||||
func (mm *MysqlMetadata) GetCreateTableDdl(tableName string) []map[string]interface{} {
|
||||
_, res, _ := mm.di.SelectData(fmt.Sprintf("show create table %s ", tableName))
|
||||
return res
|
||||
}
|
||||
128
server/internal/db/application/pgsql_meta.go
Normal file
128
server/internal/db/application/pgsql_meta.go
Normal file
@@ -0,0 +1,128 @@
|
||||
package application
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"mayfly-go/pkg/biz"
|
||||
)
|
||||
|
||||
// ---------------------------------- pgsql元数据 -----------------------------------
|
||||
const (
|
||||
// postgres 表信息元数据
|
||||
PGSQL_TABLE_MA = `SELECT obj_description(c.oid) AS "tableComment", c.relname AS "tableName" FROM pg_class c
|
||||
JOIN pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = (select current_schema()) AND c.reltype > 0`
|
||||
|
||||
PGSQL_TABLE_INFO = `SELECT obj_description(c.oid) AS "tableComment", c.relname AS "tableName" FROM pg_class c
|
||||
JOIN pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = (select current_schema()) AND c.reltype > 0`
|
||||
|
||||
PGSQL_INDEX_INFO = `SELECT indexname AS "indexName", indexdef AS "indexComment"
|
||||
FROM pg_indexes WHERE schemaname = (select current_schema()) AND tablename = '%s'`
|
||||
|
||||
PGSQL_COLUMN_MA = `SELECT
|
||||
C.relname AS "tableName",
|
||||
A.attname AS "columnName",
|
||||
concat_ws ( '', t.typname, SUBSTRING ( format_type ( a.atttypid, a.atttypmod ) FROM '\(.*\)' ) ) AS "columnType",
|
||||
d.description AS "columnComment"
|
||||
FROM
|
||||
pg_attribute a LEFT JOIN pg_description d ON d.objoid = a.attrelid
|
||||
AND d.objsubid = A.attnum
|
||||
LEFT JOIN pg_class c ON A.attrelid = c.oid
|
||||
LEFT JOIN pg_namespace pn ON c.relnamespace = pn.oid
|
||||
LEFT JOIN pg_type t ON a.atttypid = t.oid
|
||||
WHERE
|
||||
A.attnum >= 0
|
||||
AND pn.nspname = (select current_schema())
|
||||
AND C.relname in (%s)
|
||||
ORDER BY
|
||||
C.relname DESC,
|
||||
A.attnum ASC
|
||||
OFFSET %d LIMIT %d
|
||||
`
|
||||
|
||||
PGSQL_COLUMN_MA_COUNT = `SELECT COUNT(*) "maNum"
|
||||
FROM
|
||||
pg_attribute a LEFT JOIN pg_description d ON d.objoid = a.attrelid
|
||||
AND d.objsubid = A.attnum
|
||||
LEFT JOIN pg_class c ON A.attrelid = c.oid
|
||||
LEFT JOIN pg_namespace pn ON c.relnamespace = pn.oid
|
||||
LEFT JOIN pg_type t ON a.atttypid = t.oid
|
||||
WHERE
|
||||
A.attnum >= 0
|
||||
AND pn.nspname = (select current_schema())
|
||||
AND C.relname in (%s)
|
||||
`
|
||||
)
|
||||
|
||||
type PgsqlMetadata struct {
|
||||
di *DbInstance
|
||||
}
|
||||
|
||||
// 获取表基础元信息, 如表名等
|
||||
func (pm *PgsqlMetadata) GetTables() []map[string]interface{} {
|
||||
_, res, _ := pm.di.SelectData(PGSQL_TABLE_MA)
|
||||
return res
|
||||
}
|
||||
|
||||
// 获取列元信息, 如列名等
|
||||
func (pm *PgsqlMetadata) GetColumns(tableNames ...string) []map[string]interface{} {
|
||||
var sql, tableName string
|
||||
for i := 0; i < len(tableNames); i++ {
|
||||
if i != 0 {
|
||||
tableName = tableName + ", "
|
||||
}
|
||||
tableName = tableName + "'" + tableNames[i] + "'"
|
||||
}
|
||||
|
||||
pageNum := 1
|
||||
// 如果大于一个表，则统计列数并分页获取
|
||||
if len(tableNames) > 1 {
|
||||
countSql := fmt.Sprintf(PGSQL_COLUMN_MA_COUNT, tableName)
|
||||
_, countRes, _ := pm.di.SelectData(countSql)
|
||||
maCount := 0
|
||||
// 查询出所有列信息总数，手动分页获取所有数据
|
||||
if count64, is64 := countRes[0]["maNum"].(int64); is64 {
|
||||
maCount = int(count64)
|
||||
} else {
|
||||
maCount = countRes[0]["maNum"].(int)
|
||||
}
|
||||
// 计算需要查询的页数
|
||||
pageNum = maCount / DEFAULT_COLUMN_SIZE
|
||||
if maCount%DEFAULT_COLUMN_SIZE > 0 {
|
||||
pageNum++
|
||||
}
|
||||
}
|
||||
|
||||
res := make([]map[string]interface{}, 0)
|
||||
for index := 0; index < pageNum; index++ {
|
||||
sql = fmt.Sprintf(PGSQL_COLUMN_MA, tableName, index*DEFAULT_COLUMN_SIZE, DEFAULT_COLUMN_SIZE)
|
||||
_, result, err := pm.di.SelectData(sql)
|
||||
biz.ErrIsNilAppendErr(err, "获取数据库列信息失败: %s")
|
||||
res = append(res, result...)
|
||||
}
|
||||
return res
|
||||
}
|
||||
|
||||
// 获取表主键字段名，默认第一个字段
|
||||
func (pm *PgsqlMetadata) GetPrimaryKey(tablename string) string {
|
||||
columns := pm.GetColumns(tablename)
|
||||
if len(columns) == 0 {
|
||||
panic(biz.NewBizErr(fmt.Sprintf("[%s] 表不存在", tablename)))
|
||||
}
|
||||
return columns[0]["columnName"].(string)
|
||||
}
|
||||
|
||||
// 获取表信息，比GetTables获取更详细的表信息
|
||||
func (pm *PgsqlMetadata) GetTableInfos() []map[string]interface{} {
|
||||
_, res, _ := pm.di.SelectData(PGSQL_TABLE_INFO)
|
||||
return res
|
||||
}
|
||||
|
||||
// 获取表索引信息
|
||||
func (pm *PgsqlMetadata) GetTableIndex(tableName string) []map[string]interface{} {
|
||||
_, res, _ := pm.di.SelectData(fmt.Sprintf(PGSQL_INDEX_INFO, tableName))
|
||||
return res
|
||||
}
|
||||
|
||||
// 获取建表ddl
|
||||
func (mm *PgsqlMetadata) GetCreateTableDdl(tableName string) []map[string]interface{} {
|
||||
return nil
|
||||
}
|
||||
Reference in New Issue
Block a user