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dialect/sql/schema: schema match from predicate

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This commit is contained in:
Ariel Mashraki
2021-01-18 12:30:00 +02:00
committed by Ariel Mashraki
parent 7e904f0e1c
commit cc8da8fbf7
3 changed files with 38 additions and 28 deletions
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30
dialect/sql/schema/mysql.go
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@@ -48,7 +48,7 @@ func (d *MySQL) init(ctx context.Context, tx dialect.Tx) error {
func (d *MySQL) tableExist(ctx context.Context, tx dialect.Tx, name string) (bool, error) {
query, args := sql.Select(sql.Count("*")).From(sql.Table("TABLES").Schema("INFORMATION_SCHEMA")).
Where(sql.And(
sql.EQ("TABLE_SCHEMA", d.tableSchema()),
d.matchSchema(),
sql.EQ("TABLE_NAME", name),
)).Query()
return exist(ctx, tx, query, args...)
@@ -57,7 +57,7 @@ func (d *MySQL) tableExist(ctx context.Context, tx dialect.Tx, name string) (boo
func (d *MySQL) fkExist(ctx context.Context, tx dialect.Tx, name string) (bool, error) {
query, args := sql.Select(sql.Count("*")).From(sql.Table("TABLE_CONSTRAINTS").Schema("INFORMATION_SCHEMA")).
Where(sql.And(
sql.EQ("TABLE_SCHEMA", d.tableSchema()),
d.matchSchema(),
sql.EQ("CONSTRAINT_TYPE", "FOREIGN KEY"),
sql.EQ("CONSTRAINT_NAME", name),
)).Query()
@@ -70,7 +70,7 @@ func (d *MySQL) table(ctx context.Context, tx dialect.Tx, name string) (*Table,
query, args := sql.Select("column_name", "column_type", "is_nullable", "column_key", "column_default", "extra", "character_set_name", "collation_name").
From(sql.Table("COLUMNS").Schema("INFORMATION_SCHEMA")).
Where(sql.And(
sql.EQ("TABLE_SCHEMA", d.tableSchema()),
d.matchSchema(),
sql.EQ("TABLE_NAME", name)),
).Query()
if err := tx.Query(ctx, query, args, rows); err != nil {
@@ -117,7 +117,7 @@ func (d *MySQL) indexes(ctx context.Context, tx dialect.Tx, name string) ([]*Ind
query, args := sql.Select("index_name", "column_name", "non_unique", "seq_in_index").
From(sql.Table("STATISTICS").Schema("INFORMATION_SCHEMA")).
Where(sql.And(
sql.EQ("TABLE_SCHEMA", d.tableSchema()),
d.matchSchema(),
sql.EQ("TABLE_NAME", name),
)).
OrderBy("index_name", "seq_in_index").
@@ -145,7 +145,7 @@ func (d *MySQL) verifyRange(ctx context.Context, tx dialect.Tx, t *Table, expect
query, args := sql.Select("AUTO_INCREMENT").
From(sql.Table("TABLES").Schema("INFORMATION_SCHEMA")).
Where(sql.And(
sql.EQ("TABLE_SCHEMA", d.tableSchema()),
d.matchSchema(),
sql.EQ("TABLE_NAME", t.Name),
)).
Query()
@@ -512,19 +512,23 @@ func (d *MySQL) renameIndex(t *Table, old, new *Index) sql.Querier {
return q.DropIndex(old.Name).AddIndex(new.Builder(t.Name))
}
// tableSchema returns the query for getting the table schema.
func (d *MySQL) tableSchema() sql.Querier {
if d.schema != "" {
return sql.Expr("?", d.schema)
// matchSchema returns the predicate for matching table schema.
func (d *MySQL) matchSchema(columns ...string) *sql.Predicate {
column := "TABLE_SCHEMA"
if len(columns) > 0 {
column = columns[0]
}
return sql.Raw("(SELECT DATABASE())")
if d.schema != "" {
return sql.EQ(column, d.schema)
}
return sql.EQ(column, sql.Raw("(SELECT DATABASE())"))
}
// tables returns the query for getting the in the schema.
func (d *MySQL) tables() sql.Querier {
return sql.Select("TABLE_NAME").
From(sql.Table("TABLES").Schema("INFORMATION_SCHEMA")).
Where(sql.EQ("TABLE_SCHEMA", d.tableSchema()))
Where(d.matchSchema())
}
// alterColumns returns the queries for applying the columns change-set.
@@ -564,7 +568,7 @@ func (d *MySQL) normalizeJSON(ctx context.Context, tx dialect.Tx, t *Table) erro
query, args := sql.Select("CONSTRAINT_NAME", "CHECK_CLAUSE").
From(sql.Table("CHECK_CONSTRAINTS").Schema("INFORMATION_SCHEMA")).
Where(sql.And(
sql.EQ("CONSTRAINT_SCHEMA", d.tableSchema()),
d.matchSchema("CONSTRAINT_SCHEMA"),
sql.EQ("TABLE_NAME", t.Name),
sql.InValues("CONSTRAINT_NAME", names...),
)).
@@ -632,7 +636,7 @@ func (d *MySQL) fkNames(ctx context.Context, tx dialect.Tx, table, column string
sql.EQ("COLUMN_NAME", column),
// NULL for unique and primary-key constraints.
sql.NotNull("POSITION_IN_UNIQUE_CONSTRAINT"),
sql.EQ("TABLE_SCHEMA", d.tableSchema()),
d.matchSchema(),
)).
Query()
var (