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72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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package oracle
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import (
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"context"
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"fmt"
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"strings"
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"github.com/gogf/gf/v2/database/gdb"
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"github.com/gogf/gf/v2/util/gutil"
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)
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var (
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tableFieldsSqlTmp = `
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SELECT
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COLUMN_NAME AS FIELD,
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CASE
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WHEN (DATA_TYPE='NUMBER' AND NVL(DATA_SCALE,0)=0) THEN 'INT'||'('||DATA_PRECISION||','||DATA_SCALE||')'
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WHEN (DATA_TYPE='NUMBER' AND NVL(DATA_SCALE,0)>0) THEN 'FLOAT'||'('||DATA_PRECISION||','||DATA_SCALE||')'
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WHEN DATA_TYPE='FLOAT' THEN DATA_TYPE||'('||DATA_PRECISION||','||DATA_SCALE||')'
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ELSE DATA_TYPE||'('||DATA_LENGTH||')' END AS TYPE,NULLABLE
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FROM USER_TAB_COLUMNS WHERE TABLE_NAME = '%s' ORDER BY COLUMN_ID
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`
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)
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func init() {
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var err error
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tableFieldsSqlTmp, err = gdb.FormatMultiLineSqlToSingle(tableFieldsSqlTmp)
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if err != nil {
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panic(err)
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}
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}
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// TableFields retrieves and returns the fields' information of specified table of current schema.
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//
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// Also see DriverMysql.TableFields.
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func (d *Driver) TableFields(ctx context.Context, table string, schema ...string) (fields map[string]*gdb.TableField, err error) {
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var (
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result gdb.Result
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link gdb.Link
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usedSchema = gutil.GetOrDefaultStr(d.GetSchema(), schema...)
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structureSql = fmt.Sprintf(tableFieldsSqlTmp, strings.ToUpper(table))
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)
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if link, err = d.SlaveLink(usedSchema); err != nil {
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return nil, err
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}
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result, err = d.DoSelect(ctx, link, structureSql)
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if err != nil {
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return nil, err
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}
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fields = make(map[string]*gdb.TableField)
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for i, m := range result {
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isNull := false
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if m["NULLABLE"].String() == "Y" {
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isNull = true
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}
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fields[m["FIELD"].String()] = &gdb.TableField{
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Index: i,
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Name: m["FIELD"].String(),
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Type: m["TYPE"].String(),
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Null: isNull,
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}
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}
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return fields, nil
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}
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