IW4M-Admin/Data/Migrations/Sqlite/20191030000713_EnforceUniqueIndexForEFAliasIPName.cs

189 lines
3.6 KiB
C#
Raw Normal View History

using Microsoft.EntityFrameworkCore.Migrations;
namespace Data.Migrations.Sqlite
{
public partial class EnforceUniqueIndexForEFAliasIPName : Migration
{
protected override void Up(MigrationBuilder migrationBuilder)
{
if (migrationBuilder.ActiveProvider == "Microsoft.EntityFrameworkCore.Sqlite")
{
migrationBuilder.Sql(@"DROP TABLE IF EXISTS DUPLICATE_ALIASES;
CREATE TABLE DUPLICATE_ALIASES AS
SELECT
MIN(AliasId) MIN,
MAX(AliasId) MAX,
LinkId
FROM
EFAlias
WHERE
(IPAddress, NAME) IN(
SELECT DISTINCT
IPAddress,
NAME
FROM
EFAlias
GROUP BY
EFAlias.IPAddress,
NAME
HAVING
COUNT(IPAddress) > 1 AND COUNT(NAME) > 1
)
GROUP BY
IPAddress
ORDER BY
IPAddress;
UPDATE
EFClients
SET CurrentAliasId = (SELECT MAX FROM DUPLICATE_ALIASES WHERE CurrentAliasId = MIN)
WHERE
CurrentAliasId IN(
SELECT
MIN
FROM
DUPLICATE_ALIASES
);
DELETE
FROM
EFAlias
WHERE
AliasId IN(
SELECT
MIN
FROM
DUPLICATE_ALIASES
);
DROP TABLE
DUPLICATE_ALIASES;");
return;
}
else if (migrationBuilder.ActiveProvider == "Pomelo.EntityFrameworkCore.MySql")
{
migrationBuilder.Sql(@"CREATE TABLE DUPLICATE_ALIASES
SELECT
MIN(`AliasId`) `MIN`,
MAX(`AliasId`) `MAX`,
`LinkId`
FROM
`EFAlias`
WHERE
(`IPAddress`, `NAME`) IN(
SELECT DISTINCT
`IPAddress`,
`NAME`
FROM
`EFAlias`
GROUP BY
`EFAlias`.`IPAddress`,
`NAME`
HAVING
COUNT(`IPAddress`) > 1 AND COUNT(`NAME`) > 1
)
GROUP BY
`IPAddress`
ORDER BY
`IPAddress`;
SET
SQL_SAFE_UPDATES = 0;
UPDATE
`EFClients` AS `Client`
JOIN
DUPLICATE_ALIASES `Duplicate`
ON
`Client`.CurrentAliasId = `Duplicate`.`MIN`
SET
`Client`.CurrentAliasId = `Duplicate`.`MAX`
WHERE
`Client`.`CurrentAliasId` IN(
SELECT
`MIN`
FROM
DUPLICATE_ALIASES
);
DELETE
FROM
`EFAlias`
WHERE
`AliasId` IN(
SELECT
`MIN`
FROM
DUPLICATE_ALIASES
);
SET
SQL_SAFE_UPDATES = 1;
DROP TABLE
DUPLICATE_ALIASES;");
}
else
{
migrationBuilder.Sql(@"CREATE TEMPORARY TABLE DUPLICATE_ALIASES AS
SELECT
MIN(""AliasId"") ""MIN"",
MAX(""AliasId"") ""MAX"",
MIN(""LinkId"") ""LinkId""
FROM
""EFAlias""
WHERE
(""IPAddress"", ""Name"") IN(
SELECT DISTINCT
""IPAddress"",
""Name""
FROM
""EFAlias""
GROUP BY
""EFAlias"".""IPAddress"",
""Name""
HAVING
COUNT(""IPAddress"") > 1 AND COUNT(""Name"") > 1
)
GROUP BY
""IPAddress""
ORDER BY
""IPAddress"";
UPDATE
""EFClients"" AS ""Client""
SET
""CurrentAliasId"" = ""Duplicate"".""MAX""
FROM
DUPLICATE_ALIASES ""Duplicate""
WHERE
""Client"".""CurrentAliasId"" IN(
SELECT
""MIN""
FROM
DUPLICATE_ALIASES
)
AND
""Client"".""CurrentAliasId"" = ""Duplicate"".""MIN"";
DELETE
FROM
""EFAlias""
WHERE
""AliasId"" IN(
SELECT
""MIN""
FROM
DUPLICATE_ALIASES
);
DROP TABLE
DUPLICATE_ALIASES;");
}
migrationBuilder.CreateIndex(
name: "IX_EFAlias_Name_IPAddress",
table: "EFAlias",
columns: new[] { "Name", "IPAddress" },
unique: true);
}
protected override void Down(MigrationBuilder migrationBuilder)
{
}
}
}