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feat: 🎸 aware table schema on function ColumnTypes
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alvinadet committed Oct 3, 2024
1 parent 94b32a6 commit 94e25e6
Showing 1 changed file with 24 additions and 3 deletions.
27 changes: 24 additions & 3 deletions migrator.go
Original file line number Diff line number Diff line change
Expand Up @@ -215,9 +215,20 @@ func (m Migrator) ColumnTypes(value interface{}) ([]gorm.ColumnType, error) {
rows.Close()

{
_, schemaName, tableName := splitFullQualifiedName(stmt.Table)

query := "SELECT COLUMN_NAME, DATA_TYPE, COLUMN_DEFAULT, IS_NULLABLE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, NUMERIC_PRECISION_RADIX, NUMERIC_SCALE, DATETIME_PRECISION FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_CATALOG = ? AND TABLE_NAME = ?"

queryParameters := []interface{}{m.CurrentDatabase(), tableName}

if schemaName != "" {
query += " AND TABLE_SCHEMA = ?"
queryParameters = append(queryParameters, schemaName)
}

var (
columnTypeSQL = "SELECT COLUMN_NAME, DATA_TYPE, COLUMN_DEFAULT, IS_NULLABLE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, NUMERIC_PRECISION_RADIX, NUMERIC_SCALE, DATETIME_PRECISION FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_CATALOG = ? AND TABLE_NAME = ?"
columns, rowErr = m.DB.Raw(columnTypeSQL, m.CurrentDatabase(), stmt.Table).Rows()
columnTypeSQL = query
columns, rowErr = m.DB.Raw(columnTypeSQL, queryParameters...).Rows()
)

if rowErr != nil {
Expand Down Expand Up @@ -272,7 +283,17 @@ func (m Migrator) ColumnTypes(value interface{}) ([]gorm.ColumnType, error) {
}

{
columnTypeRows, err := m.DB.Raw("SELECT c.COLUMN_NAME, t.CONSTRAINT_TYPE FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS t JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE c ON c.CONSTRAINT_NAME=t.CONSTRAINT_NAME WHERE t.CONSTRAINT_TYPE IN ('PRIMARY KEY', 'UNIQUE') AND c.TABLE_CATALOG = ? AND c.TABLE_NAME = ?", m.CurrentDatabase(), stmt.Table).Rows()
_, schemaName, tableName := splitFullQualifiedName(stmt.Table)
query := "SELECT c.COLUMN_NAME, t.CONSTRAINT_TYPE FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS t JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE c ON c.CONSTRAINT_NAME=t.CONSTRAINT_NAME WHERE t.CONSTRAINT_TYPE IN ('PRIMARY KEY', 'UNIQUE') AND c.TABLE_CATALOG = ? AND c.TABLE_NAME = ?"

queryParameters := []interface{}{m.CurrentDatabase(), tableName}

if schemaName != "" {
query += " AND c.TABLE_SCHEMA = ?"
queryParameters = append(queryParameters, schemaName)
}

columnTypeRows, err := m.DB.Raw(query, queryParameters...).Rows()
if err != nil {
return err
}
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