[Proposal] Add --skip-drop option #44
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cmd/mysqldef/mysqldef.go
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| @@ -26,6 +26,7 @@ func parseOptions(args []string) (adapter.Config, *sqldef.Options) { | |||
| File string `long:"file" description:"Read schema SQL from the file, rather than stdin" value-name:"sql_file" default:"-"` | |||
| DryRun bool `long:"dry-run" description:"Don't run DDLs but just show them"` | |||
| Export bool `long:"export" description:"Just dump the current schema to stdout"` | |||
| Safety bool `long:"safety" description:"Not make destructive changes such as Drop"` | |||
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I feel --skip-drop might be more descriptive about what it does than --safety. WDYT?
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I also think --skip-drop is better than --safety !
adapter/database.go
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| transaction, err := d.DB().Begin() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| fmt.Println("-- Apply --") | ||
| for _, ddl := range ddls { | ||
| if isSafety && strings.Contains(ddl, "DROP") { | ||
| fmt.Printf("Not executed: %s;\n", ddl) |
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sqldef's output is designed to always be a valid input for mysql/psql. Could you prefix -- to make it a SQL comment?
And if you follow https://github.com/k0kubun/sqldef/pull/44/files#r339372757, it'd be -- Skipped: %s;.
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I understand.
I think --Skipped: %s; is good.
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Could you add the same option to psqldef for consistency, and update the README as well? Also, it'd be really nice if we can have tests in mysqldef_test.go and psqldef_test.go. |
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@k0kubun |
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Great job 👍
I'm a little concerned about just checking "DROP" inclusion in DDL (we could have DROP in a part of table/column/index names) and I'd prefer having a metadata like Drop: true for each statement in the future. However, I believe this implementation would work for most of usual situations, so I'm merging this.
issue: #43
I implemented the
--skip-dropoption as one way to avoid destructive changes.Please consider it.