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// Go MySQL Driver - A MySQL-Driver for Go's database/sql package |
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// |
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// Copyright 2017 The Go-MySQL-Driver Authors. All rights reserved. |
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// |
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// This Source Code Form is subject to the terms of the Mozilla Public |
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// License, v. 2.0. If a copy of the MPL was not distributed with this file, |
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// You can obtain one at http://mozilla.org/MPL/2.0/. |
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package mysql |
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import ( |
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"database/sql" |
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"reflect" |
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) |
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func (mf *mysqlField) typeDatabaseName() string { |
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switch mf.fieldType { |
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case fieldTypeBit: |
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return "BIT" |
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case fieldTypeBLOB: |
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if mf.charSet != collations[binaryCollation] { |
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return "TEXT" |
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} |
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return "BLOB" |
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case fieldTypeDate: |
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return "DATE" |
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case fieldTypeDateTime: |
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return "DATETIME" |
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case fieldTypeDecimal: |
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return "DECIMAL" |
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case fieldTypeDouble: |
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return "DOUBLE" |
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case fieldTypeEnum: |
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return "ENUM" |
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case fieldTypeFloat: |
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return "FLOAT" |
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case fieldTypeGeometry: |
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return "GEOMETRY" |
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case fieldTypeInt24: |
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return "MEDIUMINT" |
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case fieldTypeJSON: |
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return "JSON" |
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case fieldTypeLong: |
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return "INT" |
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case fieldTypeLongBLOB: |
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if mf.charSet != collations[binaryCollation] { |
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return "LONGTEXT" |
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} |
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return "LONGBLOB" |
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case fieldTypeLongLong: |
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return "BIGINT" |
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case fieldTypeMediumBLOB: |
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if mf.charSet != collations[binaryCollation] { |
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return "MEDIUMTEXT" |
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} |
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return "MEDIUMBLOB" |
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case fieldTypeNewDate: |
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return "DATE" |
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case fieldTypeNewDecimal: |
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return "DECIMAL" |
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case fieldTypeNULL: |
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return "NULL" |
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case fieldTypeSet: |
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return "SET" |
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case fieldTypeShort: |
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return "SMALLINT" |
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case fieldTypeString: |
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if mf.charSet == collations[binaryCollation] { |
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return "BINARY" |
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} |
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return "CHAR" |
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case fieldTypeTime: |
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return "TIME" |
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case fieldTypeTimestamp: |
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return "TIMESTAMP" |
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case fieldTypeTiny: |
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return "TINYINT" |
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case fieldTypeTinyBLOB: |
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if mf.charSet != collations[binaryCollation] { |
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return "TINYTEXT" |
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} |
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return "TINYBLOB" |
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case fieldTypeVarChar: |
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if mf.charSet == collations[binaryCollation] { |
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return "VARBINARY" |
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} |
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return "VARCHAR" |
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case fieldTypeVarString: |
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if mf.charSet == collations[binaryCollation] { |
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return "VARBINARY" |
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} |
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return "VARCHAR" |
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case fieldTypeYear: |
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return "YEAR" |
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default: |
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return "" |
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} |
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} |
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var ( |
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scanTypeFloat32 = reflect.TypeOf(float32(0)) |
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scanTypeFloat64 = reflect.TypeOf(float64(0)) |
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scanTypeInt8 = reflect.TypeOf(int8(0)) |
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scanTypeInt16 = reflect.TypeOf(int16(0)) |
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scanTypeInt32 = reflect.TypeOf(int32(0)) |
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scanTypeInt64 = reflect.TypeOf(int64(0)) |
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scanTypeNullFloat = reflect.TypeOf(sql.NullFloat64{}) |
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scanTypeNullInt = reflect.TypeOf(sql.NullInt64{}) |
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scanTypeNullTime = reflect.TypeOf(nullTime{}) |
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scanTypeUint8 = reflect.TypeOf(uint8(0)) |
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scanTypeUint16 = reflect.TypeOf(uint16(0)) |
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scanTypeUint32 = reflect.TypeOf(uint32(0)) |
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scanTypeUint64 = reflect.TypeOf(uint64(0)) |
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scanTypeRawBytes = reflect.TypeOf(sql.RawBytes{}) |
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scanTypeUnknown = reflect.TypeOf(new(interface{})) |
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) |
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type mysqlField struct { |
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tableName string |
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name string |
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length uint32 |
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flags fieldFlag |
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fieldType fieldType |
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decimals byte |
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charSet uint8 |
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} |
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func (mf *mysqlField) scanType() reflect.Type { |
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switch mf.fieldType { |
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case fieldTypeTiny: |
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if mf.flags&flagNotNULL != 0 { |
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if mf.flags&flagUnsigned != 0 { |
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return scanTypeUint8 |
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} |
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return scanTypeInt8 |
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} |
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return scanTypeNullInt |
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case fieldTypeShort, fieldTypeYear: |
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if mf.flags&flagNotNULL != 0 { |
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if mf.flags&flagUnsigned != 0 { |
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return scanTypeUint16 |
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} |
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return scanTypeInt16 |
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} |
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return scanTypeNullInt |
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case fieldTypeInt24, fieldTypeLong: |
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if mf.flags&flagNotNULL != 0 { |
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if mf.flags&flagUnsigned != 0 { |
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return scanTypeUint32 |
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} |
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return scanTypeInt32 |
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} |
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return scanTypeNullInt |
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case fieldTypeLongLong: |
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if mf.flags&flagNotNULL != 0 { |
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if mf.flags&flagUnsigned != 0 { |
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return scanTypeUint64 |
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} |
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return scanTypeInt64 |
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} |
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return scanTypeNullInt |
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case fieldTypeFloat: |
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if mf.flags&flagNotNULL != 0 { |
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return scanTypeFloat32 |
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} |
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return scanTypeNullFloat |
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case fieldTypeDouble: |
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if mf.flags&flagNotNULL != 0 { |
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return scanTypeFloat64 |
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} |
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return scanTypeNullFloat |
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case fieldTypeDecimal, fieldTypeNewDecimal, fieldTypeVarChar, |
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fieldTypeBit, fieldTypeEnum, fieldTypeSet, fieldTypeTinyBLOB, |
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fieldTypeMediumBLOB, fieldTypeLongBLOB, fieldTypeBLOB, |
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fieldTypeVarString, fieldTypeString, fieldTypeGeometry, fieldTypeJSON, |
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fieldTypeTime: |
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return scanTypeRawBytes |
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case fieldTypeDate, fieldTypeNewDate, |
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fieldTypeTimestamp, fieldTypeDateTime: |
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// NullTime is always returned for more consistent behavior as it can |
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// handle both cases of parseTime regardless if the field is nullable. |
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return scanTypeNullTime |
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default: |
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return scanTypeUnknown |
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} |
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} |
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