fix: fixed case when the overridden type of column does not work

internal/db/postgres/context/pg_catalog.go

@@ -154,6 +154,10 @@ func getTables(
 
 	// Assigning columns, pk and fk for each table
 	for _, t := range tables {
+		if len(t.Columns) > 0 {
+			// Columns were already initialized during the transformer initialization
+			continue
+		}
 		columns, err := getColumnsConfig(ctx, tx, t.Oid, version)
 		if err != nil {
 			return nil, nil, fmt.Errorf("unable to collect table columns: %w", err)

internal/db/postgres/context/table.go

@@ -89,6 +89,12 @@ func validateAndBuildTablesConfig(
 			}
 			table.Columns = columns
 
+			pkColumns, err := getPrimaryKeyColumns(ctx, tx, table.Oid)
+			if err != nil {
+				return nil, nil, fmt.Errorf("unable to collect primary key columns: %w", err)
+			}
+			table.PrimaryKey = pkColumns
+
 			// Assigning overridden column types for driver initialization
 			if tableCfg.ColumnsTypeOverride != nil {
 				for _, c := range table.Columns {

pkg/toolkit/column.go

@@ -47,3 +47,10 @@ func (c *Column) GetType() (string, Oid) {
 	}
 	return c.TypeName, c.TypeOid
 }
+
+func (c *Column) GetTypeOid() Oid {
+	if c.OverriddenTypeName != "" {
+		return c.OverriddenTypeOid
+	}
+	return c.TypeOid
+}

pkg/toolkit/driver.go

@@ -130,7 +130,7 @@ func (d *Driver) EncodeValueByColumnIdx(idx int, src any, buf []byte) ([]byte, e
 		return nil, fmt.Errorf("index out ouf range: must be between 0 and %d received %d", d.maxIdx, idx)
 	}
 	c := d.Table.Columns[idx]
-	oid := uint32(c.TypeOid)
+	oid := uint32(c.GetTypeOid())
 	if c.OverriddenTypeOid != 0 {
 		oid = uint32(c.OverriddenTypeOid)
 	}
@@ -158,7 +158,7 @@ func (d *Driver) ScanValueByColumnIdx(idx int, src []byte, dest any) error {
 		return fmt.Errorf("index out ouf range: must be between 0 and %d received %d", d.maxIdx, idx)
 	}
 	c := d.Table.Columns[idx]
-	oid := uint32(c.TypeOid)
+	oid := uint32(c.GetTypeOid())
 	if c.OverriddenTypeOid != 0 {
 		oid = uint32(c.OverriddenTypeOid)
 	}
@@ -189,7 +189,7 @@ func (d *Driver) DecodeValueByColumnIdx(idx int, src []byte) (any, error) {
 		return nil, fmt.Errorf("index out ouf range: must be between 0 and %d received %d", d.maxIdx, idx)
 	}
 	c := d.Table.Columns[idx]
-	oid := uint32(c.TypeOid)
+	oid := uint32(c.GetTypeOid())
 	if c.OverriddenTypeOid != 0 {
 		oid = uint32(c.OverriddenTypeOid)
 	}

pkg/toolkit/meta.go

@@ -18,7 +18,7 @@ type Meta struct {
 	Table               *Table            `json:"table"`
 	Parameters          *Parameters       `json:"parameters"`
 	Types               []*Type           `json:"types"`
-	ColumnTypeOverrides map[string]string `json:"column_type_overrides"`
+	ColumnsTypeOverride map[string]string `json:"columns_type_override"`
 }
 
 type Parameters struct {

pkg/toolkit/static_parameter.go

@@ -301,7 +301,7 @@ func scanValue(driver *Driver, definition *ParameterDefinition, rawValue ParamsV
 
 		var typeOid uint32
 		if linkedColumnParameter != nil {
-			typeOid = uint32(linkedColumnParameter.Column.TypeOid)
+			typeOid = uint32(linkedColumnParameter.Column.GetTypeOid())
 		} else {
 			t, ok := driver.GetTypeMap().TypeForName(definition.CastDbType)
 			if !ok {