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Performance optimization sqlite codefirst

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sunkaixuan 2023-06-01 13:56:37 +08:00
parent 5d7f214ba3
commit 333c5a7674
1 changed files with 4 additions and 3 deletions
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7
Src/Asp.NetCore2/SqlSugar/Realization/Sqlite/DbMaintenance/SqliteDbMaintenance.cs
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@ -328,10 +328,11 @@ namespace SqlSugar
private List<DbColumnInfo> GetColumnInfosByTableName(string tableName) private List<DbColumnInfo> GetColumnInfosByTableName(string tableName)
{ {
var columns = GetColumnsByTableName2(tableName); //var columns = GetColumnsByTableName2(tableName);
string sql = "PRAGMA table_info(" +SqlBuilder.GetTranslationTableName(tableName) + ")"; string sql = "PRAGMA table_info(" +SqlBuilder.GetTranslationTableName(tableName) + ")";
var oldIsEnableLog = this.Context.Ado.IsEnableLogEvent; var oldIsEnableLog = this.Context.Ado.IsEnableLogEvent;
this.Context.Ado.IsEnableLogEvent = false; this.Context.Ado.IsEnableLogEvent = false;
var tableSript=this.Context.Ado.GetString($"SELECT sql FROM sqlite_master WHERE name='{tableName}' AND type='table'");
using (DbDataReader dataReader = (SqliteDataReader)this.Context.Ado.GetDataReader(sql)) using (DbDataReader dataReader = (SqliteDataReader)this.Context.Ado.GetDataReader(sql))
{ {
this.Context.Ado.IsEnableLogEvent = oldIsEnableLog; this.Context.Ado.IsEnableLogEvent = oldIsEnableLog;
@ -355,13 +356,13 @@ namespace SqlSugar
} }
type = type.Split('(').First(); type = type.Split('(').First();
} }
bool isIdentity = columns.FirstOrDefault(it => it.DbColumnName.Equals(dataReader.GetString(1),StringComparison.CurrentCultureIgnoreCase)).IsIdentity; //bool isIdentity = columns.FirstOrDefault(it => it.DbColumnName.Equals(dataReader.GetString(1),StringComparison.CurrentCultureIgnoreCase)).IsIdentity;
DbColumnInfo column = new DbColumnInfo() DbColumnInfo column = new DbColumnInfo()
{ {
TableName = this.SqlBuilder.GetNoTranslationColumnName(tableName + ""), TableName = this.SqlBuilder.GetNoTranslationColumnName(tableName + ""),
DataType = type, DataType = type,
IsNullable = !dataReader.GetBoolean(3), IsNullable = !dataReader.GetBoolean(3),
IsIdentity = isIdentity, IsIdentity = tableSript.Contains("AUTOINCREMENT")&& dataReader.GetBoolean(5).ObjToBool(),
ColumnDescription = null, ColumnDescription = null,
DbColumnName = dataReader.GetString(1), DbColumnName = dataReader.GetString(1),
DefaultValue = dataReader.GetValue(4).ObjToString(), DefaultValue = dataReader.GetValue(4).ObjToString(),