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35 lines
933 B
35 lines
933 B
package migrate
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import "database/sql"
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func createSchemaIfNotExists(tx *sql.Tx, schema string) error {
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row := tx.QueryRow(`SELECT 1 FROM information_schema.schemata WHERE schema_name = '` + schema + `'`)
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err := row.Scan(new(int))
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if err == sql.ErrNoRows {
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_, err = tx.Exec(`CREATE SCHEMA ` + schema)
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if err != nil {
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return err
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}
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}
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return err
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}
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func createTableIfNotExists(tx *sql.Tx, schema, table string) (string, error) {
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versionTable := table
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var schemaCond string
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if schema != `` {
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versionTable = schema + `.` + table
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schemaCond = ` AND table_schema = '` + schema + `'`
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}
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row := tx.QueryRow(`SELECT 1 FROM information_schema.tables WHERE table_name = '` + table + `'` + schemaCond)
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err := row.Scan(new(int))
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if err == sql.ErrNoRows {
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_, err = tx.Exec(`CREATE TABLE ` + versionTable + ` (version integer NOT NULL PRIMARY KEY)`)
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if err != nil {
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return ``, err
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}
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}
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return versionTable, err
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}
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