vikunja-api/vendor/xorm.io/xorm/dialects/postgres.go
konrad d28f005552 Update xorm to v1 (#323)
Fix limit for databases other than sqlite

go mod tidy && go mod vendor

Remove unneeded break statements

Make everything work with the new xorm version

Fix xorm logging

Fix lint

Fix redis init

Fix using id field

Fix database init for testing

Change default database log level

Add xorm logger

Use const for postgres

go mod tidy

Merge branch 'master' into update/xorm

# Conflicts:
#	go.mod
#	go.sum
#	vendor/modules.txt

go mod vendor

Fix loading fixtures for postgres

Go mod vendor1

Update xorm to version 1

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/323
2020-04-12 17:29:24 +00:00

1348 lines
48 KiB
Go

// Copyright 2015 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package dialects
import (
"context"
"errors"
"fmt"
"net/url"
"strconv"
"strings"
"xorm.io/xorm/core"
"xorm.io/xorm/schemas"
)
// from http://www.postgresql.org/docs/current/static/sql-keywords-appendix.html
var (
postgresReservedWords = map[string]bool{
"A": true,
"ABORT": true,
"ABS": true,
"ABSENT": true,
"ABSOLUTE": true,
"ACCESS": true,
"ACCORDING": true,
"ACTION": true,
"ADA": true,
"ADD": true,
"ADMIN": true,
"AFTER": true,
"AGGREGATE": true,
"ALL": true,
"ALLOCATE": true,
"ALSO": true,
"ALTER": true,
"ALWAYS": true,
"ANALYSE": true,
"ANALYZE": true,
"AND": true,
"ANY": true,
"ARE": true,
"ARRAY": true,
"ARRAY_AGG": true,
"ARRAY_MAX_CARDINALITY": true,
"AS": true,
"ASC": true,
"ASENSITIVE": true,
"ASSERTION": true,
"ASSIGNMENT": true,
"ASYMMETRIC": true,
"AT": true,
"ATOMIC": true,
"ATTRIBUTE": true,
"ATTRIBUTES": true,
"AUTHORIZATION": true,
"AVG": true,
"BACKWARD": true,
"BASE64": true,
"BEFORE": true,
"BEGIN": true,
"BEGIN_FRAME": true,
"BEGIN_PARTITION": true,
"BERNOULLI": true,
"BETWEEN": true,
"BIGINT": true,
"BINARY": true,
"BIT": true,
"BIT_LENGTH": true,
"BLOB": true,
"BLOCKED": true,
"BOM": true,
"BOOLEAN": true,
"BOTH": true,
"BREADTH": true,
"BY": true,
"C": true,
"CACHE": true,
"CALL": true,
"CALLED": true,
"CARDINALITY": true,
"CASCADE": true,
"CASCADED": true,
"CASE": true,
"CAST": true,
"CATALOG": true,
"CATALOG_NAME": true,
"CEIL": true,
"CEILING": true,
"CHAIN": true,
"CHAR": true,
"CHARACTER": true,
"CHARACTERISTICS": true,
"CHARACTERS": true,
"CHARACTER_LENGTH": true,
"CHARACTER_SET_CATALOG": true,
"CHARACTER_SET_NAME": true,
"CHARACTER_SET_SCHEMA": true,
"CHAR_LENGTH": true,
"CHECK": true,
"CHECKPOINT": true,
"CLASS": true,
"CLASS_ORIGIN": true,
"CLOB": true,
"CLOSE": true,
"CLUSTER": true,
"COALESCE": true,
"COBOL": true,
"COLLATE": true,
"COLLATION": true,
"COLLATION_CATALOG": true,
"COLLATION_NAME": true,
"COLLATION_SCHEMA": true,
"COLLECT": true,
"COLUMN": true,
"COLUMNS": true,
"COLUMN_NAME": true,
"COMMAND_FUNCTION": true,
"COMMAND_FUNCTION_CODE": true,
"COMMENT": true,
"COMMENTS": true,
"COMMIT": true,
"COMMITTED": true,
"CONCURRENTLY": true,
"CONDITION": true,
"CONDITION_NUMBER": true,
"CONFIGURATION": true,
"CONNECT": true,
"CONNECTION": true,
"CONNECTION_NAME": true,
"CONSTRAINT": true,
"CONSTRAINTS": true,
"CONSTRAINT_CATALOG": true,
"CONSTRAINT_NAME": true,
"CONSTRAINT_SCHEMA": true,
"CONSTRUCTOR": true,
"CONTAINS": true,
"CONTENT": true,
"CONTINUE": true,
"CONTROL": true,
"CONVERSION": true,
"CONVERT": true,
"COPY": true,
"CORR": true,
"CORRESPONDING": true,
"COST": true,
"COUNT": true,
"COVAR_POP": true,
"COVAR_SAMP": true,
"CREATE": true,
"CROSS": true,
"CSV": true,
"CUBE": true,
"CUME_DIST": true,
"CURRENT": true,
"CURRENT_CATALOG": true,
"CURRENT_DATE": true,
"CURRENT_DEFAULT_TRANSFORM_GROUP": true,
"CURRENT_PATH": true,
"CURRENT_ROLE": true,
"CURRENT_ROW": true,
"CURRENT_SCHEMA": true,
"CURRENT_TIME": true,
"CURRENT_TIMESTAMP": true,
"CURRENT_TRANSFORM_GROUP_FOR_TYPE": true,
"CURRENT_USER": true,
"CURSOR": true,
"CURSOR_NAME": true,
"CYCLE": true,
"DATA": true,
"DATABASE": true,
"DATALINK": true,
"DATE": true,
"DATETIME_INTERVAL_CODE": true,
"DATETIME_INTERVAL_PRECISION": true,
"DAY": true,
"DB": true,
"DEALLOCATE": true,
"DEC": true,
"DECIMAL": true,
"DECLARE": true,
"DEFAULT": true,
"DEFAULTS": true,
"DEFERRABLE": true,
"DEFERRED": true,
"DEFINED": true,
"DEFINER": true,
"DEGREE": true,
"DELETE": true,
"DELIMITER": true,
"DELIMITERS": true,
"DENSE_RANK": true,
"DEPTH": true,
"DEREF": true,
"DERIVED": true,
"DESC": true,
"DESCRIBE": true,
"DESCRIPTOR": true,
"DETERMINISTIC": true,
"DIAGNOSTICS": true,
"DICTIONARY": true,
"DISABLE": true,
"DISCARD": true,
"DISCONNECT": true,
"DISPATCH": true,
"DISTINCT": true,
"DLNEWCOPY": true,
"DLPREVIOUSCOPY": true,
"DLURLCOMPLETE": true,
"DLURLCOMPLETEONLY": true,
"DLURLCOMPLETEWRITE": true,
"DLURLPATH": true,
"DLURLPATHONLY": true,
"DLURLPATHWRITE": true,
"DLURLSCHEME": true,
"DLURLSERVER": true,
"DLVALUE": true,
"DO": true,
"DOCUMENT": true,
"DOMAIN": true,
"DOUBLE": true,
"DROP": true,
"DYNAMIC": true,
"DYNAMIC_FUNCTION": true,
"DYNAMIC_FUNCTION_CODE": true,
"EACH": true,
"ELEMENT": true,
"ELSE": true,
"EMPTY": true,
"ENABLE": true,
"ENCODING": true,
"ENCRYPTED": true,
"END": true,
"END-EXEC": true,
"END_FRAME": true,
"END_PARTITION": true,
"ENFORCED": true,
"ENUM": true,
"EQUALS": true,
"ESCAPE": true,
"EVENT": true,
"EVERY": true,
"EXCEPT": true,
"EXCEPTION": true,
"EXCLUDE": true,
"EXCLUDING": true,
"EXCLUSIVE": true,
"EXEC": true,
"EXECUTE": true,
"EXISTS": true,
"EXP": true,
"EXPLAIN": true,
"EXPRESSION": true,
"EXTENSION": true,
"EXTERNAL": true,
"EXTRACT": true,
"FALSE": true,
"FAMILY": true,
"FETCH": true,
"FILE": true,
"FILTER": true,
"FINAL": true,
"FIRST": true,
"FIRST_VALUE": true,
"FLAG": true,
"FLOAT": true,
"FLOOR": true,
"FOLLOWING": true,
"FOR": true,
"FORCE": true,
"FOREIGN": true,
"FORTRAN": true,
"FORWARD": true,
"FOUND": true,
"FRAME_ROW": true,
"FREE": true,
"FREEZE": true,
"FROM": true,
"FS": true,
"FULL": true,
"FUNCTION": true,
"FUNCTIONS": true,
"FUSION": true,
"G": true,
"GENERAL": true,
"GENERATED": true,
"GET": true,
"GLOBAL": true,
"GO": true,
"GOTO": true,
"GRANT": true,
"GRANTED": true,
"GREATEST": true,
"GROUP": true,
"GROUPING": true,
"GROUPS": true,
"HANDLER": true,
"HAVING": true,
"HEADER": true,
"HEX": true,
"HIERARCHY": true,
"HOLD": true,
"HOUR": true,
"ID": true,
"IDENTITY": true,
"IF": true,
"IGNORE": true,
"ILIKE": true,
"IMMEDIATE": true,
"IMMEDIATELY": true,
"IMMUTABLE": true,
"IMPLEMENTATION": true,
"IMPLICIT": true,
"IMPORT": true,
"IN": true,
"INCLUDING": true,
"INCREMENT": true,
"INDENT": true,
"INDEX": true,
"INDEXES": true,
"INDICATOR": true,
"INHERIT": true,
"INHERITS": true,
"INITIALLY": true,
"INLINE": true,
"INNER": true,
"INOUT": true,
"INPUT": true,
"INSENSITIVE": true,
"INSERT": true,
"INSTANCE": true,
"INSTANTIABLE": true,
"INSTEAD": true,
"INT": true,
"INTEGER": true,
"INTEGRITY": true,
"INTERSECT": true,
"INTERSECTION": true,
"INTERVAL": true,
"INTO": true,
"INVOKER": true,
"IS": true,
"ISNULL": true,
"ISOLATION": true,
"JOIN": true,
"K": true,
"KEY": true,
"KEY_MEMBER": true,
"KEY_TYPE": true,
"LABEL": true,
"LAG": true,
"LANGUAGE": true,
"LARGE": true,
"LAST": true,
"LAST_VALUE": true,
"LATERAL": true,
"LC_COLLATE": true,
"LC_CTYPE": true,
"LEAD": true,
"LEADING": true,
"LEAKPROOF": true,
"LEAST": true,
"LEFT": true,
"LENGTH": true,
"LEVEL": true,
"LIBRARY": true,
"LIKE": true,
"LIKE_REGEX": true,
"LIMIT": true,
"LINK": true,
"LISTEN": true,
"LN": true,
"LOAD": true,
"LOCAL": true,
"LOCALTIME": true,
"LOCALTIMESTAMP": true,
"LOCATION": true,
"LOCATOR": true,
"LOCK": true,
"LOWER": true,
"M": true,
"MAP": true,
"MAPPING": true,
"MATCH": true,
"MATCHED": true,
"MATERIALIZED": true,
"MAX": true,
"MAXVALUE": true,
"MAX_CARDINALITY": true,
"MEMBER": true,
"MERGE": true,
"MESSAGE_LENGTH": true,
"MESSAGE_OCTET_LENGTH": true,
"MESSAGE_TEXT": true,
"METHOD": true,
"MIN": true,
"MINUTE": true,
"MINVALUE": true,
"MOD": true,
"MODE": true,
"MODIFIES": true,
"MODULE": true,
"MONTH": true,
"MORE": true,
"MOVE": true,
"MULTISET": true,
"MUMPS": true,
"NAME": true,
"NAMES": true,
"NAMESPACE": true,
"NATIONAL": true,
"NATURAL": true,
"NCHAR": true,
"NCLOB": true,
"NESTING": true,
"NEW": true,
"NEXT": true,
"NFC": true,
"NFD": true,
"NFKC": true,
"NFKD": true,
"NIL": true,
"NO": true,
"NONE": true,
"NORMALIZE": true,
"NORMALIZED": true,
"NOT": true,
"NOTHING": true,
"NOTIFY": true,
"NOTNULL": true,
"NOWAIT": true,
"NTH_VALUE": true,
"NTILE": true,
"NULL": true,
"NULLABLE": true,
"NULLIF": true,
"NULLS": true,
"NUMBER": true,
"NUMERIC": true,
"OBJECT": true,
"OCCURRENCES_REGEX": true,
"OCTETS": true,
"OCTET_LENGTH": true,
"OF": true,
"OFF": true,
"OFFSET": true,
"OIDS": true,
"OLD": true,
"ON": true,
"ONLY": true,
"OPEN": true,
"OPERATOR": true,
"OPTION": true,
"OPTIONS": true,
"OR": true,
"ORDER": true,
"ORDERING": true,
"ORDINALITY": true,
"OTHERS": true,
"OUT": true,
"OUTER": true,
"OUTPUT": true,
"OVER": true,
"OVERLAPS": true,
"OVERLAY": true,
"OVERRIDING": true,
"OWNED": true,
"OWNER": true,
"P": true,
"PAD": true,
"PARAMETER": true,
"PARAMETER_MODE": true,
"PARAMETER_NAME": true,
"PARAMETER_ORDINAL_POSITION": true,
"PARAMETER_SPECIFIC_CATALOG": true,
"PARAMETER_SPECIFIC_NAME": true,
"PARAMETER_SPECIFIC_SCHEMA": true,
"PARSER": true,
"PARTIAL": true,
"PARTITION": true,
"PASCAL": true,
"PASSING": true,
"PASSTHROUGH": true,
"PASSWORD": true,
"PATH": true,
"PERCENT": true,
"PERCENTILE_CONT": true,
"PERCENTILE_DISC": true,
"PERCENT_RANK": true,
"PERIOD": true,
"PERMISSION": true,
"PLACING": true,
"PLANS": true,
"PLI": true,
"PORTION": true,
"POSITION": true,
"POSITION_REGEX": true,
"POWER": true,
"PRECEDES": true,
"PRECEDING": true,
"PRECISION": true,
"PREPARE": true,
"PREPARED": true,
"PRESERVE": true,
"PRIMARY": true,
"PRIOR": true,
"PRIVILEGES": true,
"PROCEDURAL": true,
"PROCEDURE": true,
"PROGRAM": true,
"PUBLIC": true,
"QUOTE": true,
"RANGE": true,
"RANK": true,
"READ": true,
"READS": true,
"REAL": true,
"REASSIGN": true,
"RECHECK": true,
"RECOVERY": true,
"RECURSIVE": true,
"REF": true,
"REFERENCES": true,
"REFERENCING": true,
"REFRESH": true,
"REGR_AVGX": true,
"REGR_AVGY": true,
"REGR_COUNT": true,
"REGR_INTERCEPT": true,
"REGR_R2": true,
"REGR_SLOPE": true,
"REGR_SXX": true,
"REGR_SXY": true,
"REGR_SYY": true,
"REINDEX": true,
"RELATIVE": true,
"RELEASE": true,
"RENAME": true,
"REPEATABLE": true,
"REPLACE": true,
"REPLICA": true,
"REQUIRING": true,
"RESET": true,
"RESPECT": true,
"RESTART": true,
"RESTORE": true,
"RESTRICT": true,
"RESULT": true,
"RETURN": true,
"RETURNED_CARDINALITY": true,
"RETURNED_LENGTH": true,
"RETURNED_OCTET_LENGTH": true,
"RETURNED_SQLSTATE": true,
"RETURNING": true,
"RETURNS": true,
"REVOKE": true,
"RIGHT": true,
"ROLE": true,
"ROLLBACK": true,
"ROLLUP": true,
"ROUTINE": true,
"ROUTINE_CATALOG": true,
"ROUTINE_NAME": true,
"ROUTINE_SCHEMA": true,
"ROW": true,
"ROWS": true,
"ROW_COUNT": true,
"ROW_NUMBER": true,
"RULE": true,
"SAVEPOINT": true,
"SCALE": true,
"SCHEMA": true,
"SCHEMA_NAME": true,
"SCOPE": true,
"SCOPE_CATALOG": true,
"SCOPE_NAME": true,
"SCOPE_SCHEMA": true,
"SCROLL": true,
"SEARCH": true,
"SECOND": true,
"SECTION": true,
"SECURITY": true,
"SELECT": true,
"SELECTIVE": true,
"SELF": true,
"SENSITIVE": true,
"SEQUENCE": true,
"SEQUENCES": true,
"SERIALIZABLE": true,
"SERVER": true,
"SERVER_NAME": true,
"SESSION": true,
"SESSION_USER": true,
"SET": true,
"SETOF": true,
"SETS": true,
"SHARE": true,
"SHOW": true,
"SIMILAR": true,
"SIMPLE": true,
"SIZE": true,
"SMALLINT": true,
"SNAPSHOT": true,
"SOME": true,
"SOURCE": true,
"SPACE": true,
"SPECIFIC": true,
"SPECIFICTYPE": true,
"SPECIFIC_NAME": true,
"SQL": true,
"SQLCODE": true,
"SQLERROR": true,
"SQLEXCEPTION": true,
"SQLSTATE": true,
"SQLWARNING": true,
"SQRT": true,
"STABLE": true,
"STANDALONE": true,
"START": true,
"STATE": true,
"STATEMENT": true,
"STATIC": true,
"STATISTICS": true,
"STDDEV_POP": true,
"STDDEV_SAMP": true,
"STDIN": true,
"STDOUT": true,
"STORAGE": true,
"STRICT": true,
"STRIP": true,
"STRUCTURE": true,
"STYLE": true,
"SUBCLASS_ORIGIN": true,
"SUBMULTISET": true,
"SUBSTRING": true,
"SUBSTRING_REGEX": true,
"SUCCEEDS": true,
"SUM": true,
"SYMMETRIC": true,
"SYSID": true,
"SYSTEM": true,
"SYSTEM_TIME": true,
"SYSTEM_USER": true,
"T": true,
"TABLE": true,
"TABLES": true,
"TABLESAMPLE": true,
"TABLESPACE": true,
"TABLE_NAME": true,
"TEMP": true,
"TEMPLATE": true,
"TEMPORARY": true,
"TEXT": true,
"THEN": true,
"TIES": true,
"TIME": true,
"TIMESTAMP": true,
"TIMEZONE_HOUR": true,
"TIMEZONE_MINUTE": true,
"TO": true,
"TOKEN": true,
"TOP_LEVEL_COUNT": true,
"TRAILING": true,
"TRANSACTION": true,
"TRANSACTIONS_COMMITTED": true,
"TRANSACTIONS_ROLLED_BACK": true,
"TRANSACTION_ACTIVE": true,
"TRANSFORM": true,
"TRANSFORMS": true,
"TRANSLATE": true,
"TRANSLATE_REGEX": true,
"TRANSLATION": true,
"TREAT": true,
"TRIGGER": true,
"TRIGGER_CATALOG": true,
"TRIGGER_NAME": true,
"TRIGGER_SCHEMA": true,
"TRIM": true,
"TRIM_ARRAY": true,
"TRUE": true,
"TRUNCATE": true,
"TRUSTED": true,
"TYPE": true,
"TYPES": true,
"UESCAPE": true,
"UNBOUNDED": true,
"UNCOMMITTED": true,
"UNDER": true,
"UNENCRYPTED": true,
"UNION": true,
"UNIQUE": true,
"UNKNOWN": true,
"UNLINK": true,
"UNLISTEN": true,
"UNLOGGED": true,
"UNNAMED": true,
"UNNEST": true,
"UNTIL": true,
"UNTYPED": true,
"UPDATE": true,
"UPPER": true,
"URI": true,
"USAGE": true,
"USER": true,
"USER_DEFINED_TYPE_CATALOG": true,
"USER_DEFINED_TYPE_CODE": true,
"USER_DEFINED_TYPE_NAME": true,
"USER_DEFINED_TYPE_SCHEMA": true,
"USING": true,
"VACUUM": true,
"VALID": true,
"VALIDATE": true,
"VALIDATOR": true,
"VALUE": true,
"VALUES": true,
"VALUE_OF": true,
"VARBINARY": true,
"VARCHAR": true,
"VARIADIC": true,
"VARYING": true,
"VAR_POP": true,
"VAR_SAMP": true,
"VERBOSE": true,
"VERSION": true,
"VERSIONING": true,
"VIEW": true,
"VOLATILE": true,
"WHEN": true,
"WHENEVER": true,
"WHERE": true,
"WHITESPACE": true,
"WIDTH_BUCKET": true,
"WINDOW": true,
"WITH": true,
"WITHIN": true,
"WITHOUT": true,
"WORK": true,
"WRAPPER": true,
"WRITE": true,
"XML": true,
"XMLAGG": true,
"XMLATTRIBUTES": true,
"XMLBINARY": true,
"XMLCAST": true,
"XMLCOMMENT": true,
"XMLCONCAT": true,
"XMLDECLARATION": true,
"XMLDOCUMENT": true,
"XMLELEMENT": true,
"XMLEXISTS": true,
"XMLFOREST": true,
"XMLITERATE": true,
"XMLNAMESPACES": true,
"XMLPARSE": true,
"XMLPI": true,
"XMLQUERY": true,
"XMLROOT": true,
"XMLSCHEMA": true,
"XMLSERIALIZE": true,
"XMLTABLE": true,
"XMLTEXT": true,
"XMLVALIDATE": true,
"YEAR": true,
"YES": true,
"ZONE": true,
}
postgresQuoter = schemas.Quoter{'"', '"', schemas.AlwaysReserve}
)
var (
// DefaultPostgresSchema default postgres schema
DefaultPostgresSchema = "public"
)
type postgres struct {
Base
}
func (db *postgres) Init(uri *URI) error {
db.quoter = postgresQuoter
return db.Base.Init(db, uri)
}
func (db *postgres) getSchema() string {
if db.uri.Schema != "" {
return db.uri.Schema
}
return DefaultPostgresSchema
}
func (db *postgres) needQuote(name string) bool {
if db.IsReserved(name) {
return true
}
for _, c := range name {
if c >= 'A' && c <= 'Z' {
return true
}
}
return false
}
func (db *postgres) SetQuotePolicy(quotePolicy QuotePolicy) {
switch quotePolicy {
case QuotePolicyNone:
var q = postgresQuoter
q.IsReserved = schemas.AlwaysNoReserve
db.quoter = q
case QuotePolicyReserved:
var q = postgresQuoter
q.IsReserved = db.needQuote
db.quoter = q
case QuotePolicyAlways:
fallthrough
default:
db.quoter = postgresQuoter
}
}
func (db *postgres) SQLType(c *schemas.Column) string {
var res string
switch t := c.SQLType.Name; t {
case schemas.TinyInt:
res = schemas.SmallInt
return res
case schemas.Bit:
res = schemas.Boolean
return res
case schemas.MediumInt, schemas.Int, schemas.Integer:
if c.IsAutoIncrement {
return schemas.Serial
}
return schemas.Integer
case schemas.BigInt:
if c.IsAutoIncrement {
return schemas.BigSerial
}
return schemas.BigInt
case schemas.Serial, schemas.BigSerial:
c.IsAutoIncrement = true
c.Nullable = false
res = t
case schemas.Binary, schemas.VarBinary:
return schemas.Bytea
case schemas.DateTime:
res = schemas.TimeStamp
case schemas.TimeStampz:
return "timestamp with time zone"
case schemas.Float:
res = schemas.Real
case schemas.TinyText, schemas.MediumText, schemas.LongText:
res = schemas.Text
case schemas.NVarchar:
res = schemas.Varchar
case schemas.Uuid:
return schemas.Uuid
case schemas.Blob, schemas.TinyBlob, schemas.MediumBlob, schemas.LongBlob:
return schemas.Bytea
case schemas.Double:
return "DOUBLE PRECISION"
default:
if c.IsAutoIncrement {
return schemas.Serial
}
res = t
}
if strings.EqualFold(res, "bool") {
// for bool, we don't need length information
return res
}
hasLen1 := (c.Length > 0)
hasLen2 := (c.Length2 > 0)
if hasLen2 {
res += "(" + strconv.Itoa(c.Length) + "," + strconv.Itoa(c.Length2) + ")"
} else if hasLen1 {
res += "(" + strconv.Itoa(c.Length) + ")"
}
return res
}
func (db *postgres) IsReserved(name string) bool {
_, ok := postgresReservedWords[strings.ToUpper(name)]
return ok
}
func (db *postgres) AutoIncrStr() string {
return ""
}
func (db *postgres) CreateTableSQL(table *schemas.Table, tableName string) ([]string, bool) {
var sql string
sql = "CREATE TABLE IF NOT EXISTS "
if tableName == "" {
tableName = table.Name
}
quoter := db.Quoter()
sql += quoter.Quote(tableName)
sql += " ("
if len(table.ColumnsSeq()) > 0 {
pkList := table.PrimaryKeys
for _, colName := range table.ColumnsSeq() {
col := table.GetColumn(colName)
if col.IsPrimaryKey && len(pkList) == 1 {
sql += db.String(col)
} else {
sql += db.StringNoPk(col)
}
sql = strings.TrimSpace(sql)
sql += ", "
}
if len(pkList) > 1 {
sql += "PRIMARY KEY ( "
sql += quoter.Join(pkList, ",")
sql += " ), "
}
sql = sql[:len(sql)-2]
}
sql += ")"
return []string{sql}, true
}
func (db *postgres) IndexCheckSQL(tableName, idxName string) (string, []interface{}) {
if len(db.getSchema()) == 0 {
args := []interface{}{tableName, idxName}
return `SELECT indexname FROM pg_indexes WHERE tablename = ? AND indexname = ?`, args
}
args := []interface{}{db.getSchema(), tableName, idxName}
return `SELECT indexname FROM pg_indexes ` +
`WHERE schemaname = ? AND tablename = ? AND indexname = ?`, args
}
func (db *postgres) IsTableExist(queryer core.Queryer, ctx context.Context, tableName string) (bool, error) {
if len(db.getSchema()) == 0 {
return db.HasRecords(queryer, ctx, `SELECT tablename FROM pg_tables WHERE tablename = $1`, tableName)
}
return db.HasRecords(queryer, ctx, `SELECT tablename FROM pg_tables WHERE schemaname = $1 AND tablename = $2`,
db.getSchema(), tableName)
}
func (db *postgres) ModifyColumnSQL(tableName string, col *schemas.Column) string {
if len(db.getSchema()) == 0 || strings.Contains(tableName, ".") {
return fmt.Sprintf("alter table %s ALTER COLUMN %s TYPE %s",
tableName, col.Name, db.SQLType(col))
}
return fmt.Sprintf("alter table %s.%s ALTER COLUMN %s TYPE %s",
db.getSchema(), tableName, col.Name, db.SQLType(col))
}
func (db *postgres) DropIndexSQL(tableName string, index *schemas.Index) string {
idxName := index.Name
tableParts := strings.Split(strings.Replace(tableName, `"`, "", -1), ".")
tableName = tableParts[len(tableParts)-1]
if !strings.HasPrefix(idxName, "UQE_") &&
!strings.HasPrefix(idxName, "IDX_") {
if index.Type == schemas.UniqueType {
idxName = fmt.Sprintf("UQE_%v_%v", tableName, index.Name)
} else {
idxName = fmt.Sprintf("IDX_%v_%v", tableName, index.Name)
}
}
if db.getSchema() != "" {
idxName = db.getSchema() + "." + idxName
}
return fmt.Sprintf("DROP INDEX %v", db.Quoter().Quote(idxName))
}
func (db *postgres) IsColumnExist(queryer core.Queryer, ctx context.Context, tableName, colName string) (bool, error) {
args := []interface{}{db.getSchema(), tableName, colName}
query := "SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_schema = $1 AND table_name = $2" +
" AND column_name = $3"
if len(db.getSchema()) == 0 {
args = []interface{}{tableName, colName}
query = "SELECT column_name FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = $1" +
" AND column_name = $2"
}
rows, err := queryer.QueryContext(ctx, query, args...)
if err != nil {
return false, err
}
defer rows.Close()
return rows.Next(), nil
}
func (db *postgres) GetColumns(queryer core.Queryer, ctx context.Context, tableName string) ([]string, map[string]*schemas.Column, error) {
args := []interface{}{tableName}
s := `SELECT column_name, column_default, is_nullable, data_type, character_maximum_length,
CASE WHEN p.contype = 'p' THEN true ELSE false END AS primarykey,
CASE WHEN p.contype = 'u' THEN true ELSE false END AS uniquekey
FROM pg_attribute f
JOIN pg_class c ON c.oid = f.attrelid JOIN pg_type t ON t.oid = f.atttypid
LEFT JOIN pg_attrdef d ON d.adrelid = c.oid AND d.adnum = f.attnum
LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
LEFT JOIN pg_constraint p ON p.conrelid = c.oid AND f.attnum = ANY (p.conkey)
LEFT JOIN pg_class AS g ON p.confrelid = g.oid
LEFT JOIN INFORMATION_SCHEMA.COLUMNS s ON s.column_name=f.attname AND c.relname=s.table_name
WHERE n.nspname= s.table_schema AND c.relkind = 'r'::char AND c.relname = $1%s AND f.attnum > 0 ORDER BY f.attnum;`
schema := db.getSchema()
if schema != "" {
s = fmt.Sprintf(s, "AND s.table_schema = $2")
args = append(args, schema)
} else {
s = fmt.Sprintf(s, "")
}
rows, err := queryer.QueryContext(ctx, s, args...)
if err != nil {
return nil, nil, err
}
defer rows.Close()
cols := make(map[string]*schemas.Column)
colSeq := make([]string, 0)
for rows.Next() {
col := new(schemas.Column)
col.Indexes = make(map[string]int)
var colName, isNullable, dataType string
var maxLenStr, colDefault *string
var isPK, isUnique bool
err = rows.Scan(&colName, &colDefault, &isNullable, &dataType, &maxLenStr, &isPK, &isUnique)
if err != nil {
return nil, nil, err
}
var maxLen int
if maxLenStr != nil {
maxLen, err = strconv.Atoi(*maxLenStr)
if err != nil {
return nil, nil, err
}
}
col.Name = strings.Trim(colName, `" `)
if colDefault != nil {
var theDefault = *colDefault
// cockroach has type with the default value with :::
// and postgres with ::, we should remove them before store them
idx := strings.Index(theDefault, ":::")
if idx == -1 {
idx = strings.Index(theDefault, "::")
}
if idx > -1 {
theDefault = theDefault[:idx]
}
if strings.HasSuffix(theDefault, "+00:00'") {
theDefault = theDefault[:len(theDefault)-7] + "'"
}
col.Default = theDefault
col.DefaultIsEmpty = false
if strings.HasPrefix(col.Default, "nextval(") {
col.IsAutoIncrement = true
col.Default = ""
col.DefaultIsEmpty = true
}
} else {
col.DefaultIsEmpty = true
}
if isPK {
col.IsPrimaryKey = true
}
col.Nullable = (isNullable == "YES")
switch strings.ToLower(dataType) {
case "character varying", "character", "string":
col.SQLType = schemas.SQLType{Name: schemas.Varchar, DefaultLength: 0, DefaultLength2: 0}
case "timestamp without time zone":
col.SQLType = schemas.SQLType{Name: schemas.DateTime, DefaultLength: 0, DefaultLength2: 0}
case "timestamp with time zone":
col.SQLType = schemas.SQLType{Name: schemas.TimeStampz, DefaultLength: 0, DefaultLength2: 0}
case "double precision":
col.SQLType = schemas.SQLType{Name: schemas.Double, DefaultLength: 0, DefaultLength2: 0}
case "boolean":
col.SQLType = schemas.SQLType{Name: schemas.Bool, DefaultLength: 0, DefaultLength2: 0}
case "time without time zone":
col.SQLType = schemas.SQLType{Name: schemas.Time, DefaultLength: 0, DefaultLength2: 0}
case "bytes":
col.SQLType = schemas.SQLType{Name: schemas.Binary, DefaultLength: 0, DefaultLength2: 0}
case "oid":
col.SQLType = schemas.SQLType{Name: schemas.BigInt, DefaultLength: 0, DefaultLength2: 0}
case "array":
col.SQLType = schemas.SQLType{Name: schemas.Array, DefaultLength: 0, DefaultLength2: 0}
default:
startIdx := strings.Index(strings.ToLower(dataType), "string(")
if startIdx != -1 && strings.HasSuffix(dataType, ")") {
length := dataType[startIdx+8 : len(dataType)-1]
l, _ := strconv.Atoi(length)
col.SQLType = schemas.SQLType{Name: "STRING", DefaultLength: l, DefaultLength2: 0}
} else {
col.SQLType = schemas.SQLType{Name: strings.ToUpper(dataType), DefaultLength: 0, DefaultLength2: 0}
}
}
if _, ok := schemas.SqlTypes[col.SQLType.Name]; !ok {
return nil, nil, fmt.Errorf("Unknown colType: %s - %s", dataType, col.SQLType.Name)
}
col.Length = maxLen
if !col.DefaultIsEmpty {
if col.SQLType.IsText() {
if strings.HasSuffix(col.Default, "::character varying") {
col.Default = strings.TrimRight(col.Default, "::character varying")
} else if !strings.HasPrefix(col.Default, "'") {
col.Default = "'" + col.Default + "'"
}
} else if col.SQLType.IsTime() {
if strings.HasSuffix(col.Default, "::timestamp without time zone") {
col.Default = strings.TrimRight(col.Default, "::timestamp without time zone")
}
}
}
cols[col.Name] = col
colSeq = append(colSeq, col.Name)
}
return colSeq, cols, nil
}
func (db *postgres) GetTables(queryer core.Queryer, ctx context.Context) ([]*schemas.Table, error) {
args := []interface{}{}
s := "SELECT tablename FROM pg_tables"
schema := db.getSchema()
if schema != "" {
args = append(args, schema)
s = s + " WHERE schemaname = $1"
}
rows, err := queryer.QueryContext(ctx, s, args...)
if err != nil {
return nil, err
}
defer rows.Close()
tables := make([]*schemas.Table, 0)
for rows.Next() {
table := schemas.NewEmptyTable()
var name string
err = rows.Scan(&name)
if err != nil {
return nil, err
}
table.Name = name
tables = append(tables, table)
}
return tables, nil
}
func getIndexColName(indexdef string) []string {
var colNames []string
cs := strings.Split(indexdef, "(")
for _, v := range strings.Split(strings.Split(cs[1], ")")[0], ",") {
colNames = append(colNames, strings.Split(strings.TrimLeft(v, " "), " ")[0])
}
return colNames
}
func (db *postgres) GetIndexes(queryer core.Queryer, ctx context.Context, tableName string) (map[string]*schemas.Index, error) {
args := []interface{}{tableName}
s := fmt.Sprintf("SELECT indexname, indexdef FROM pg_indexes WHERE tablename=$1")
if len(db.getSchema()) != 0 {
args = append(args, db.getSchema())
s = s + " AND schemaname=$2"
}
rows, err := queryer.QueryContext(ctx, s, args...)
if err != nil {
return nil, err
}
defer rows.Close()
indexes := make(map[string]*schemas.Index, 0)
for rows.Next() {
var indexType int
var indexName, indexdef string
var colNames []string
err = rows.Scan(&indexName, &indexdef)
if err != nil {
return nil, err
}
if indexName == "primary" {
continue
}
indexName = strings.Trim(indexName, `" `)
if strings.HasSuffix(indexName, "_pkey") {
continue
}
if strings.HasPrefix(indexdef, "CREATE UNIQUE INDEX") {
indexType = schemas.UniqueType
} else {
indexType = schemas.IndexType
}
colNames = getIndexColName(indexdef)
var isRegular bool
if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
newIdxName := indexName[5+len(tableName):]
isRegular = true
if newIdxName != "" {
indexName = newIdxName
}
}
index := &schemas.Index{Name: indexName, Type: indexType, Cols: make([]string, 0)}
for _, colName := range colNames {
index.Cols = append(index.Cols, strings.TrimSpace(strings.Replace(colName, `"`, "", -1)))
}
index.IsRegular = isRegular
indexes[index.Name] = index
}
return indexes, nil
}
func (db *postgres) Filters() []Filter {
return []Filter{&SeqFilter{Prefix: "$", Start: 1}}
}
type pqDriver struct {
}
type values map[string]string
func (vs values) Set(k, v string) {
vs[k] = v
}
func (vs values) Get(k string) (v string) {
return vs[k]
}
func parseURL(connstr string) (string, error) {
u, err := url.Parse(connstr)
if err != nil {
return "", err
}
if u.Scheme != "postgresql" && u.Scheme != "postgres" {
return "", fmt.Errorf("invalid connection protocol: %s", u.Scheme)
}
escaper := strings.NewReplacer(` `, `\ `, `'`, `\'`, `\`, `\\`)
if u.Path != "" {
return escaper.Replace(u.Path[1:]), nil
}
return "", nil
}
func parseOpts(name string, o values) error {
if len(name) == 0 {
return fmt.Errorf("invalid options: %s", name)
}
name = strings.TrimSpace(name)
ps := strings.Split(name, " ")
for _, p := range ps {
kv := strings.Split(p, "=")
if len(kv) < 2 {
return fmt.Errorf("invalid option: %q", p)
}
o.Set(kv[0], kv[1])
}
return nil
}
func (p *pqDriver) Parse(driverName, dataSourceName string) (*URI, error) {
db := &URI{DBType: schemas.POSTGRES}
var err error
if strings.HasPrefix(dataSourceName, "postgresql://") || strings.HasPrefix(dataSourceName, "postgres://") {
db.DBName, err = parseURL(dataSourceName)
if err != nil {
return nil, err
}
} else {
o := make(values)
err = parseOpts(dataSourceName, o)
if err != nil {
return nil, err
}
db.DBName = o.Get("dbname")
}
if db.DBName == "" {
return nil, errors.New("dbname is empty")
}
return db, nil
}
type pqDriverPgx struct {
pqDriver
}
func (pgx *pqDriverPgx) Parse(driverName, dataSourceName string) (*URI, error) {
// Remove the leading characters for driver to work
if len(dataSourceName) >= 9 && dataSourceName[0] == 0 {
dataSourceName = dataSourceName[9:]
}
return pgx.pqDriver.Parse(driverName, dataSourceName)
}
// QueryDefaultPostgresSchema returns the default postgres schema
func QueryDefaultPostgresSchema(ctx context.Context, queryer core.Queryer) (string, error) {
rows, err := queryer.QueryContext(ctx, "SHOW SEARCH_PATH")
if err != nil {
return "", err
}
defer rows.Close()
if rows.Next() {
var defaultSchema string
if err = rows.Scan(&defaultSchema); err != nil {
return "", err
}
parts := strings.Split(defaultSchema, ",")
return strings.TrimSpace(parts[len(parts)-1]), nil
}
return "", errors.New("No default schema")
}