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完成CodeFirst 根据代码注释，迁移到数据库备注

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This commit is contained in:
28810
2019-06-17 12:04:31 +08:00
parent 5ce51bc310
commit 9e6b4fb52e
17 changed files with 157 additions and 57 deletions
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2
Providers/FreeSql.Provider.MySql/FreeSql.Provider.MySql.csproj
View File

@ -2,7 +2,7 @@
<PropertyGroup>
<TargetFrameworks>netstandard2.0;net452</TargetFrameworks>
<Version>0.6.10</Version>
<Version>0.6.11</Version>
<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
<Authors>YeXiangQin</Authors>
<Description>FreeSql 数据库实现，基于 MySql 5.6</Description>

20
Providers/FreeSql.Provider.MySql/MySqlCodeFirst.cs
View File

@ -152,7 +152,8 @@ select
a.column_name,
a.column_type,
case when a.is_nullable = 'YES' then 1 else 0 end 'is_nullable',
case when locate('auto_increment', a.extra) > 0 then 1 else 0 end 'is_identity'
case when locate('auto_increment', a.extra) > 0 then 1 else 0 end 'is_identity',
a.column_comment 'comment'
from information_schema.columns a
where a.table_schema in ({0}) and a.table_name in ({1})", tboldname ?? tbname);
var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
@ -164,7 +165,8 @@ where a.table_schema in ({0}) and a.table_name in ({1})", tboldname ?? tbname);
sqlType = a1,
is_nullable = string.Concat(a[2]) == "1",
is_identity = string.Concat(a[3]) == "1",
is_unsigned = string.Concat(a[1]).EndsWith(" unsigned")
is_unsigned = string.Concat(a[1]).EndsWith(" unsigned"),
comment = string.Concat(a[4])
};
}, StringComparer.CurrentCultureIgnoreCase);
@ -174,18 +176,22 @@ where a.table_schema in ({0}) and a.table_name in ({1})", tboldname ?? tbname);
var isIdentityChanged = tbcol.Attribute.IsIdentity == true && tbcol.Attribute.DbType.IndexOf("AUTO_INCREMENT", StringComparison.CurrentCultureIgnoreCase) == -1;
if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
string.IsNullOrEmpty(tbcol.Attribute.OldName) == false && tbstruct.TryGetValue(tbcol.Attribute.OldName, out tbstructcol)) {
var isCommentChanged = tbstructcol.comment != (tbcol.Comment ?? "");
if ((tbcol.Attribute.DbType.IndexOf(" unsigned", StringComparison.CurrentCultureIgnoreCase) != -1) != tbstructcol.is_unsigned ||
tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false ||
tbcol.Attribute.IsNullable != tbstructcol.is_nullable ||
tbcol.Attribute.IsIdentity != tbstructcol.is_identity) {
tbcol.Attribute.IsIdentity != tbstructcol.is_identity ||
isCommentChanged) {
sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" MODIFY ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" ").Append(tbcol.Attribute.DbType);
if (isCommentChanged) sbalter.Append(" COMMENT ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment ?? ""));
if (isIdentityChanged) sbalter.Append(" AUTO_INCREMENT").Append(existsPrimary == null ? "" : ", DROP PRIMARY KEY").Append(", ADD PRIMARY KEY(").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(")");
sbalter.Append(";\r\n");
}
if (tbstructcol.column == tbcol.Attribute.OldName) {
if (string.Compare(tbstructcol.column, tbcol.Attribute.OldName, true) == 0) {
//修改列名
sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" CHANGE COLUMN ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.OldName)).Append(" ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType);
if (isIdentityChanged) sb.Append(" AUTO_INCREMENT").Append(existsPrimary == null ? "" : ", DROP PRIMARY KEY").Append(", ADD PRIMARY KEY(").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(")");
sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" CHANGE COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType);
if (isCommentChanged) sbalter.Append(" COMMENT ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment ?? ""));
if (isIdentityChanged) sbalter.Append(" AUTO_INCREMENT").Append(existsPrimary == null ? "" : ", DROP PRIMARY KEY").Append(", ADD PRIMARY KEY(").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(")");
sbalter.Append(";\r\n");
}
continue;
@ -193,6 +199,7 @@ where a.table_schema in ({0}) and a.table_name in ({1})", tboldname ?? tbname);
//添加列
sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ADD ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType);
if (tbcol.Attribute.IsNullable == false) sbalter.Append(" DEFAULT ").Append(_commonUtils.FormatSql("{0}", tbcol.Attribute.DbDefautValue));
if (string.IsNullOrEmpty(tbcol.Comment) == false) sbalter.Append(" COMMENT ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment ?? ""));
if (isIdentityChanged) sbalter.Append(" AUTO_INCREMENT").Append(existsPrimary == null ? "" : ", DROP PRIMARY KEY").Append(", ADD PRIMARY KEY(").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(")");
sbalter.Append(";\r\n");
}
@ -228,6 +235,7 @@ where a.constraint_schema IN ({0}) and a.table_name IN ({1})", tboldname ?? tbna
sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ");
sb.Append(tbcol.Attribute.DbType);
if (tbcol.Attribute.IsIdentity == true && tbcol.Attribute.DbType.IndexOf("AUTO_INCREMENT", StringComparison.CurrentCultureIgnoreCase) == -1) sb.Append(" AUTO_INCREMENT");
if (string.IsNullOrEmpty(tbcol.Comment) == false) sb.Append(" COMMENT ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment));
sb.Append(",");
}
if (tb.Primarys.Any()) {